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前端大佬都在使用的JavaScript工具函數(shù)寶典(內(nèi)含95個工具函數(shù))

 

01 為元素添加on方法

Element.prototype.on = Element.prototype.addEventListener;
NodeList.prototype.on = function (event, fn) {、
    []['forEach'].call(this, function (el) {
        el.on(event, fn);
    });
    return this;
};

02 為元素添加trigger方法

Element.prototype.trigger = function(type, data) {
  var event = document.createEvent("htmlEvents");
  event.initEvent(type, true, true);
  event.data = data || {};
  event.eventName = type;
  event.target = this;
  this.dispatchEvent(event);
  return this;
};
NodeList.prototype.trigger = function(event) {
  []["forEach"].call(this, function(el) {
    el["trigger"](event);
  });
  return this;
};

03 轉(zhuǎn)義html標(biāo)簽

function HtmlEncode(text) {
  return text
    .replace(/&/g, "&")
    .replace(/"/g, '"')
    .replace(/</g, "<")
    .replace(/>/g, ">");
}

04 HTML標(biāo)簽轉(zhuǎn)義

// HTML 標(biāo)簽轉(zhuǎn)義
// @param {Array.<DOMString>} templateData 字符串類型的tokens
// @param {...} ..vals 表達式占位符的運算結(jié)果tokens
//
function SaferHTML(templateData) {
  var s = templateData[0];
  for (var i = 1; i < arguments.length; i++) {
    var arg = String(arguments[i]);
    // Escape special characters in the substitution.
    s += arg
      .replace(/&/g, "&")
      .replace(/</g, "<")
      .replace(/>/g, ">");
    // Don't escape special characters in the template.
    s += templateData[i];
  }
  return s;
}
// 調(diào)用
var html = SaferHTML`<p>這是關(guān)于字符串模板的介紹</p>`;

05 跨瀏覽器綁定事件

function addEventSamp(obj, evt, fn) {
  if (!oTarget) {
    return;
  }
  if (obj.addEventListener) {
    obj.addEventListener(evt, fn, false);
  } else if (obj.attachEvent) {
    obj.attachEvent("on" + evt, fn);
  } else {
    oTarget["on" + sEvtType] = fn;
  }
}

06 加入收藏夾

function addFavorite(sURL, sTitle) {
  try {
    window.external.addFavorite(sURL, sTitle);
  } catch (e) {
    try {
      window.sidebar.addPanel(sTitle, sURL, "");
    } catch (e) {
      alert("加入收藏失敗,請使用Ctrl+D進行添加");
    }
  }
}

07 提取頁面代碼中所有網(wǎng)址

var aa = document.documentElement.outerHTML
  .match(
    /(url(|src=|href=)["']*([^"'()<>[] ]+)["')]*|(http://[w-.]+[^"'()<>[] ]+)/gi
  )
  .join("rn")
  .replace(/^(src=|href=|url()["']*|["'>) ]*$/gim, "");
alert(aa);

08 動態(tài)加載腳本文件

function Appendscript(src, text, reload, charset) {
  var id = hash(src + text);
  if (!reload && in_array(id, evalscripts)) return;
  if (reload && $(id)) {
    $(id).parentNode.removeChild($(id));
  }
  evalscripts.push(id);
  var scriptNode = document.createElement("script");
  scriptNode.type = "text/JAVAscript";
  scriptNode.id = id;
  scriptNode.charset = charset
    ? charset
    : BROWSER.firefox
    ? document.characterSet
    : document.charset;
  try {
    if (src) {
      scriptNode.src = src;
      scriptNode.onloadDone = false;
      scriptNode.onload = function() {
        scriptNode.onloadDone = true;
        JSLOADED[src] = 1;
      };
      scriptNode.onreadystatechange = function() {
        if (
          (scriptNode.readyState == "loaded" ||
            scriptNode.readyState == "complete") &&
          !scriptNode.onloadDone
        ) {
          scriptNode.onloadDone = true;
          JSLOADED[src] = 1;
        }
      };
    } else if (text) {
      scriptNode.text = text;
    }
    document.getElementsByTagName("head")[0].appendChild(scriptNode);
  } catch (e) {}
}

09 返回頂部的通用方法

function backTop(btnId) {
  var btn = document.getElementById(btnId);
  var d = document.documentElement;
  var b = document.body;
  window.onscroll = set;
  btn.style.display = "none";
  btn.onclick = function() {
    btn.style.display = "none";
    window.onscroll = null;
    this.timer = setInterval(function() {
      d.scrollTop -= Math.ceil((d.scrollTop + b.scrollTop) * 0.1);
      b.scrollTop -= Math.ceil((d.scrollTop + b.scrollTop) * 0.1);
      if (d.scrollTop + b.scrollTop == 0)
        clearInterval(btn.timer, (window.onscroll = set));
    }, 10);
  };
  function set() {
    btn.style.display = d.scrollTop + b.scrollTop > 100 ? "block" : "none";
  }
}
backTop("goTop");

10 實現(xiàn)base64解碼

function base64_decode(data) {
  var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
  var o1,
    o2,
    o3,
    h1,
    h2,
    h3,
    h4,
    bits,
    i = 0,
    ac = 0,
    dec = "",
    tmp_arr = [];
  if (!data) {
    return data;
  }
  data += "";
  do {
    h1 = b64.indexOf(data.charAt(i++));
    h2 = b64.indexOf(data.charAt(i++));
    h3 = b64.indexOf(data.charAt(i++));
    h4 = b64.indexOf(data.charAt(i++));
    bits = (h1 << 18) | (h2 << 12) | (h3 << 6) | h4;
    o1 = (bits >> 16) & 0xff;
    o2 = (bits >> 8) & 0xff;
    o3 = bits & 0xff;
    if (h3 == 64) {
      tmp_arr[ac++] = String.fromCharCode(o1);
    } else if (h4 == 64) {
      tmp_arr[ac++] = String.fromCharCode(o1, o2);
    } else {
      tmp_arr[ac++] = String.fromCharCode(o1, o2, o3);
    }
  } while (i < data.length);
  dec = tmp_arr.join("");
  dec = utf8_decode(dec);
  return dec;
}

11 確認是否是鍵盤有效輸入值

function checkKey(iKey) {
  if (iKey == 32 || iKey == 229) {
    return true;
  } /*空格和異常*/
  if (iKey > 47 && iKey < 58) {
    return true;
  } /*數(shù)字*/
  if (iKey > 64 && iKey < 91) {
    return true;
  } /*字母*/
  if (iKey > 95 && iKey < 108) {
    return true;
  } /*數(shù)字鍵盤1*/
  if (iKey > 108 && iKey < 112) {
    return true;
  } /*數(shù)字鍵盤2*/
  if (iKey > 185 && iKey < 193) {
    return true;
  } /*符號1*/
  if (iKey > 218 && iKey < 223) {
    return true;
  } /*符號2*/
  return false;
}

12 全角半角轉(zhuǎn)換

//iCase: 0全到半,1半到全,其他不轉(zhuǎn)化
function chgCase(sStr, iCase) {
  if (
    typeof sStr != "string" ||
    sStr.length <= 0 ||
    !(iCase === 0 || iCase == 1)
  ) {
    return sStr;
  }
  var i,
    oRs = [],
    iCode;
  if (iCase) {
    /*半->全*/
    for (i = 0; i < sStr.length; i += 1) {
      iCode = sStr.charCodeAt(i);
      if (iCode == 32) {
        iCode = 12288;
      } else if (iCode < 127) {
        iCode += 65248;
      }
      oRs.push(String.fromCharCode(iCode));
    }
  } else {
    /*全->半*/
    for (i = 0; i < sStr.length; i += 1) {
      iCode = sStr.charCodeAt(i);
      if (iCode == 12288) {
        iCode = 32;
      } else if (iCode > 65280 && iCode < 65375) {
        iCode -= 65248;
      }
      oRs.push(String.fromCharCode(iCode));
    }
  }
  return oRs.join("");
}

13 版本對比

function compareVersion(v1, v2) {
  v1 = v1.split(".");
  v2 = v2.split(".");
  var len = Math.max(v1.length, v2.length);
  while (v1.length < len) {
    v1.push("0");
  }
  while (v2.length < len) {
    v2.push("0");
  }
  for (var i = 0; i < len; i++) {
    var num1 = parseInt(v1[i]);
    var num2 = parseInt(v2[i]);
    if (num1 > num2) {
      return 1;
    } else if (num1 < num2) {
      return -1;
    }
  }
  return 0;
}

14 壓縮css樣式代碼

function compressCss(s) {
  //壓縮代碼
  s = s.replace(//*(.|n)*?*//g, ""); //刪除注釋
  s = s.replace(/s*([{}:;,])s*/g, "$1");
  s = s.replace(/,[s.#d]*{/g, "{"); //容錯處理
  s = s.replace(/;s*;/g, ";"); //清除連續(xù)分號
  s = s.match(/^s*(S+(s+S+)*)s*$/); //去掉首尾空白
  return s == null ? "" : s[1];
}

15 獲取當(dāng)前路徑

var currentPageUrl = "";
if (typeof this.href === "undefined") {
  currentPageUrl = document.location.toString().toLowerCase();
} else {
  currentPageUrl = this.href.toString().toLowerCase();
}

16 字符串長度截取

function cutstr(str, len) {
    var temp,
        icount = 0,
        patrn = /[^\x00-\xff]/,
        strre = "";
    for (var i = 0; i < str.length; i++) {
        if (icount < len - 1) {
            temp = str.substr(i, 1);
                if (patrn.exec(temp) == null) {
                   icount = icount + 1
            } else {
                icount = icount + 2
            }
            strre += temp
            } else {
            break;
        }
    }
    return strre + "..."
}

17 時間日期格式轉(zhuǎn)換

Date.prototype.format = function(formatStr) {
  var str = formatStr;
  var Week = ["日", "一", "二", "三", "四", "五", "六"];
  str = str.replace(/yyyy|YYYY/, this.getFullYear());
  str = str.replace(
    /yy|YY/,
    this.getYear() % 100 > 9
      ? (this.getYear() % 100).toString()
      : "0" + (this.getYear() % 100)
  );
  str = str.replace(
    /MM/,
    this.getMonth() + 1 > 9
      ? (this.getMonth() + 1).toString()
      : "0" + (this.getMonth() + 1)
  );
  str = str.replace(/M/g, this.getMonth() + 1);
  str = str.replace(/w|W/g, Week[this.getDay()]);
  str = str.replace(
    /dd|DD/,
    this.getDate() > 9 ? this.getDate().toString() : "0" + this.getDate()
  );
  str = str.replace(/d|D/g, this.getDate());
  str = str.replace(
    /hh|HH/,
    this.getHours() > 9 ? this.getHours().toString() : "0" + this.getHours()
  );
  str = str.replace(/h|H/g, this.getHours());
  str = str.replace(
    /mm/,
    this.getMinutes() > 9
      ? this.getMinutes().toString()
      : "0" + this.getMinutes()
  );
  str = str.replace(/m/g, this.getMinutes());
  str = str.replace(
    /ss|SS/,
    this.getSeconds() > 9
      ? this.getSeconds().toString()
      : "0" + this.getSeconds()
  );
  str = str.replace(/s|S/g, this.getSeconds());
  return str;
};
// 或
Date.prototype.format = function(format) {
  var o = {
    "M+": this.getMonth() + 1, //month
    "d+": this.getDate(), //day
    "h+": this.getHours(), //hour
    "m+": this.getMinutes(), //minute
    "s+": this.getSeconds(), //second
    "q+": Math.floor((this.getMonth() + 3) / 3), //quarter
    S: this.getMilliseconds() //millisecond
  };
  if (/(y+)/.test(format))
    format = format.replace(
      RegExp.$1,
      (this.getFullYear() + "").substr(4 - RegExp.$1.length)
    );
  for (var k in o) {
    if (new RegExp("(" + k + ")").test(format))
      format = format.replace(
        RegExp.$1,
        RegExp.$1.length == 1 ? o[k] : ("00" + o[k]).substr(("" + o[k]).length)
      );
  }
  return format;
};
alert(new Date().format("yyyy-MM-dd hh:mm:ss"));

18 跨瀏覽器刪除事件

function delEvt(obj, evt, fn) {
  if (!obj) {
    return;
  }
  if (obj.addEventListener) {
    obj.addEventListener(evt, fn, false);
  } else if (oTarget.attachEvent) {
    obj.attachEvent("on" + evt, fn);
  } else {
    obj["on" + evt] = fn;
  }
}

19 判斷是否以某個字符串結(jié)束

String.prototype.endWith = function(s) {
  var d = this.length - s.length;
  return d >= 0 && this.lastIndexOf(s) == d;
};

20 返回腳本內(nèi)容

function evalscript(s) {
  if (s.indexOf("<script") == -1) return s;
  var p = /<script[^>]*?>([^\x00]*?)</script>/gi;
  var arr = [];
  while ((arr = p.exec(s))) {
    var p1 = /<script[^>]*?src="([^>]*?)"[^>]*?(reload="1")?(?:charset="([w-]+?)")?></script>/i;
    var arr1 = [];
    arr1 = p1.exec(arr[0]);
    if (arr1) {
      appendscript(arr1[1], "", arr1[2], arr1[3]);
    } else {
      p1 = /<script(.*?)>([^\x00]+?)</script>/i;
      arr1 = p1.exec(arr[0]);
      appendscript("", arr1[2], arr1[1].indexOf("reload=") != -1);
    }
  }
  return s;
}

21 格式化CSS樣式代碼

function formatCss(s) {
  //格式化代碼
  s = s.replace(/s*([{}:;,])s*/g, "$1");
  s = s.replace(/;s*;/g, ";"); //清除連續(xù)分號
  s = s.replace(/,[s.#d]*{/g, "{");
  s = s.replace(/([^s]){([^s])/g, "$1 {nt$2");
  s = s.replace(/([^s])}([^n]*)/g, "$1n}n$2");
  s = s.replace(/([^s]);([^s}])/g, "$1;nt$2");
  return s;
}

22 獲取cookie值

function getCookie(name) {
  var arr = document.cookie.match(new RegExp("(^| )" + name + "=([^;]*)(;|$)"));
  if (arr != null) return unescape(arr[2]);
  return null;
}

23 獲得URL中GET參數(shù)值

// 用法:如果地址是 test.htm?t1=1&t2=2&t3=3, 那么能取得:GET["t1"], GET["t2"], GET["t3"]
function getGet() {
  querystr = window.location.href.split("?");
  if (querystr[1]) {
    GETs = querystr[1].split("&");
    GET = [];
    for (i = 0; i < GETs.length; i++) {
      tmp_arr = GETs.split("=");
      key = tmp_arr[0];
      GET[key] = tmp_arr[1];
    }
  }
  return querystr[1];
}

24 獲取移動設(shè)備初始化大小

function getInitZoom() {
  if (!this._initZoom) {
    var screenWidth = Math.min(screen.height, screen.width);
    if (this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()) {
      screenWidth = screenWidth / window.devicePixelRatio;
    }
    this._initZoom = screenWidth / document.body.offsetWidth;
  }
  return this._initZoom;
}

25 獲取頁面高度

function getPageHeight() {
  var g = document,
    a = g.body,
    f = g.documentElement,
    d = g.compatMode == "BackCompat" ? a : g.documentElement;
  return Math.max(f.scrollHeight, a.scrollHeight, d.clientHeight);
}

26 獲取頁面scrollLeft

function getPageScrollLeft() {
  var a = document;
  return a.documentElement.scrollLeft || a.body.scrollLeft;
}

27 獲取頁面scrollTop

function getPageScrollTop() {
  var a = document;
  return a.documentElement.scrollTop || a.body.scrollTop;
}

28 獲取頁面可視寬度

function getPageViewWidth() {
  var d = document,
    a = d.compatMode == "BackCompat" ? d.body : d.documentElement;
  return a.clientWidth;
}

29 獲取頁面可視高度

function getPageViewHeight() {
  var d = document,
    a = d.compatMode == "BackCompat" ? d.body : d.documentElement;
  return a.clientHeight;
}

30 獲取頁面寬度

function getPageWidth() {
  var g = document,
    a = g.body,
    f = g.documentElement,
    d = g.compatMode == "BackCompat" ? a : g.documentElement;
  return Math.max(f.scrollWidth, a.scrollWidth, d.clientWidth);
}

31 獲取移動設(shè)備屏幕寬度

function getScreenWidth() {
  var smallerSide = Math.min(screen.width, screen.height);
  var fixViewPortsExperiment =
    rendererModel.runningExperiments.FixViewport ||
    rendererModel.runningExperiments.fixviewport;
  var fixViewPortsExperimentRunning =
    fixViewPortsExperiment && fixViewPortsExperiment.toLowerCase() === "new";
  if (fixViewPortsExperiment) {
    if (this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()) {
      smallerSide = smallerSide / window.devicePixelRatio;
    }
  }
  return smallerSide;
}

32 獲取移動設(shè)備最大化大小

function getZoom() {
  var screenWidth =
    Math.abs(window.orientation) === 90
      ? Math.max(screen.height, screen.width)
      : Math.min(screen.height, screen.width);
  if (this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()) {
    screenWidth = screenWidth / window.devicePixelRatio;
  }
  var FixViewPortsExperiment =
    rendererModel.runningExperiments.FixViewport ||
    rendererModel.runningExperiments.fixviewport;
  var FixViewPortsExperimentRunning =
    FixViewPortsExperiment &&
    (FixViewPortsExperiment === "New" || FixViewPortsExperiment === "new");
  if (FixViewPortsExperimentRunning) {
    return screenWidth / window.innerWidth;
  } else {
    return screenWidth / document.body.offsetWidth;
  }
}

33 獲取網(wǎng)頁被卷去的位置

function getScrollXY() {
  return document.body.scrollTop
    ? {
        x: document.body.scrollLeft,
        y: document.body.scrollTop
      }
    : {
        x: document.documentElement.scrollLeft,
        y: document.documentElement.scrollTop
      };
}

34 判斷是否為數(shù)字類型

function isDigit(value) {
  var patrn = /^[0-9]*$/;
  if (patrn.exec(value) == null || value == "") {
    return false;
  } else {
    return true;
  }
}

35 檢驗URL鏈接是否有效

function getUrlState(URL) {
  var xmlhttp = new ActiveXObject("microsoft.xmlhttp");
  xmlhttp.Open("GET", URL, false);
  try {
    xmlhttp.Send();
  } catch (e) {
  } finally {
    var result = xmlhttp.responseText;
    if (result) {
      if (xmlhttp.Status == 200) {
        return true;
      } else {
        return false;
      }
    } else {
      return false;
    }
  }
}

36 獲取URL上的參數(shù)

// 獲取URL中的某參數(shù)值,不區(qū)分大小寫
// 獲取URL中的某參數(shù)值,不區(qū)分大小寫,
// 默認是取'hash'里的參數(shù),
// 如果傳其他參數(shù)支持取‘search’中的參數(shù)
// @param {String} name 參數(shù)名稱
export function getUrlParam(name, type = "hash") {
  let newName = name,
    reg = new RegExp("(^|&)" + newName + "=([^&]*)(&|$)", "i"),
    paramHash = window.location.hash.split("?")[1] || "",
    paramSearch = window.location.search.split("?")[1] || "",
    param;
  type === "hash" ? (param = paramHash) : (param = paramSearch);
  let result = param.match(reg);
  if (result != null) {
    return result[2].split("/")[0];
  }
  return null;
}

37 獲取窗體可見范圍的寬與高

function getViewSize() {
  var de = document.documentElement;
  var db = document.body;
  var viewW = de.clientWidth == 0 ? db.clientWidth : de.clientWidth;
  var viewH = de.clientHeight == 0 ? db.clientHeight : de.clientHeight;
  return Array(viewW, viewH);
}

38 判斷是否安卓移動設(shè)備訪問

function isAndroidMobileDevice() {
  return /android/i.test(navigator.userAgent.toLowerCase());
}

39 判斷是否蘋果移動設(shè)備訪問

function isAppleMobileDevice() {
  return /iphone|ipod|ipad|macintosh/i.test(navigator.userAgent.toLowerCase());
}

40 是否是某類手機型號

// 用devicePixelRatio和分辨率判斷
const isIphonex = () => {
  // X XS, XS Max, XR
  const xSeriesConfig = [
    {
      devicePixelRatio: 3,
      width: 375,
      height: 812
    },
    {
      devicePixelRatio: 3,
      width: 414,
      height: 896
    },
    {
      devicePixelRatio: 2,
      width: 414,
      height: 896
    }
  ];
  // h5
  if (typeof window !== "undefined" && window) {
    const isIOS = /iphone/gi.test(window.navigator.userAgent);
    if (!isIOS) return false;
    const { devicePixelRatio, screen } = window;
    const { width, height } = screen;
    return xSeriesConfig.some(
      item =>
        item.devicePixelRatio === devicePixelRatio &&
        item.width === width &&
        item.height === height
    );
  }
  return false;
};

41 判斷是否是移動設(shè)備訪問

function isMobileUserAgent() {
  return /iphone|ipod|android.*mobile|windows.*phone|blackberry.*mobile/i.test(
    window.navigator.userAgent.toLowerCase()
  );
}

42 判斷是否移動設(shè)備

function isMobile() {
  if (typeof this._isMobile === "boolean") {
    return this._isMobile;
  }
  var screenWidth = this.getScreenWidth();
  var fixViewPortsExperiment =
    rendererModel.runningExperiments.FixViewport ||
    rendererModel.runningExperiments.fixviewport;
  var fixViewPortsExperimentRunning =
    fixViewPortsExperiment && fixViewPortsExperiment.toLowerCase() === "new";
  if (!fixViewPortsExperiment) {
    if (!this.isAppleMobileDevice()) {
      screenWidth = screenWidth / window.devicePixelRatio;
    }
  }
  var isMobileScreenSize = screenWidth < 600;
  var isMobileUserAgent = false;
  this._isMobile = isMobileScreenSize && this.isTouchScreen();
  return this._isMobile;
}

43 判斷是否手機號碼

function isMobileNumber(e) {
  var i =
      "134,135,136,137,138,139,150,151,152,157,158,159,187,188,147,182,183,184,178",
    n = "130,131,132,155,156,185,186,145,176",
    a = "133,153,180,181,189,177,173,170",
    o = e || "",
    r = o.substring(0, 3),
    d = o.substring(0, 4),
    s =
      !!/^1d{10}$/.test(o) &&
      (n.indexOf(r) >= 0
        ? "聯(lián)通"
        : a.indexOf(r) >= 0
        ? "電信"
        : "1349" == d
        ? "電信"
        : i.indexOf(r) >= 0
        ? "移動"
        : "未知");
  return s;
}

44 判斷鼠標(biāo)是否移出事件

function isMouseout(e, handler) {
  if (e.type !== "mouseout") {
    return false;
  }
  var reltg = e.relatedTarget
    ? e.relatedTarget
    : e.type === "mouseout"
    ? e.toElement
    : e.fromElement;
  while (reltg && reltg !== handler) {
    reltg = reltg.parentNode;
  }
  return reltg !== handler;
}

45 判斷是否Touch屏幕

function isTouchScreen() {
  return (
    "ontouchstart" in window ||
    (window.DocumentTouch && document instanceof DocumentTouch)
  );
}

46 判斷是否為網(wǎng)址

function isURL(strUrl) {
  var regular = /^b(((https?|ftp)://)?[-a-z0-9]+(.[-a-z0-9]+)*.(?:com|edu|gov|int|mil|net|org|biz|info|name|museum|asia|coop|aero|[a-z][a-z]|((25[0-5])|(2[0-4]d)|(1dd)|([1-9]d)|d))b(/[-a-z0-9_:@&?=+,.!/~%$]*)?)$/i;
  if (regular.test(strUrl)) {
    return true;
  } else {
    return false;
  }
}

47 判斷是否打開視窗

function isViewportOpen() {
  return !!document.getElementById("wixMobileViewport");
}

48 加載樣式文件

function loadStyle(url) {
  try {
    document.createStyleSheet(url);
  } catch (e) {
    var cssLink = document.createElement("link");
    cssLink.rel = "stylesheet";
    cssLink.type = "text/css";
    cssLink.href = url;
    var head = document.getElementsByTagName("head")[0];
    head.appendChild(cssLink);
  }
}

49 替換地址欄

function locationReplace(url) {
  if (history.replaceState) {
    history.replaceState(null, document.title, url);
    history.go(0);
  } else {
    location.replace(url);
  }
}

50 解決offsetX兼容性問題

// 針對火狐不支持offsetX/Y
function getOffset(e) {
  var target = e.target, // 當(dāng)前觸發(fā)的目標(biāo)對象
    eventCoord,
    pageCoord,
    offsetCoord;
  // 計算當(dāng)前觸發(fā)元素到文檔的距離
  pageCoord = getPageCoord(target);
  // 計算光標(biāo)到文檔的距離
  eventCoord = {
    X: window.pageXOffset + e.clientX,
    Y: window.pageYOffset + e.clientY
  };
  // 相減獲取光標(biāo)到第一個定位的父元素的坐標(biāo)
  offsetCoord = {
    X: eventCoord.X - pageCoord.X,
    Y: eventCoord.Y - pageCoord.Y
  };
  return offsetCoord;
}
function getPageCoord(element) {
  var coord = { X: 0, Y: 0 };
  // 計算從當(dāng)前觸發(fā)元素到根節(jié)點為止,
  // 各級 offsetParent 元素的 offsetLeft 或 offsetTop 值之和
  while (element) {
    coord.X += element.offsetLeft;
    coord.Y += element.offsetTop;
    element = element.offsetParent;
  }
  return coord;
}

51 打開一個窗體通用方法

function openWindow(url, windowName, width, height) {
  var x = parseInt(screen.width / 2.0) - width / 2.0;
  var y = parseInt(screen.height / 2.0) - height / 2.0;
  var isMSIE = navigator.appName == "Microsoft Internet Explorer";
  if (isMSIE) {
    var p = "resizable=1,location=no,scrollbars=no,width=";
    p = p + width;
    p = p + ",height=";
    p = p + height;
    p = p + ",left=";
    p = p + x;
    p = p + ",top=";
    p = p + y;
    retval = window.open(url, windowName, p);
  } else {
    var win = window.open(
      url,
      "ZyiisPopup",
      "top=" +
        y +
        ",left=" +
        x +
        ",scrollbars=" +
        scrollbars +
        ",dialog=yes,modal=yes,width=" +
        width +
        ",height=" +
        height +
        ",resizable=no"
    );
    eval("try { win.resizeTo(width, height); } catch(e) { }");
    win.focus();
  }
}

52 將鍵值對拼接成URL帶參數(shù)

export default const fnParams2Url = obj=> {
      let aUrl = []
      let fnAdd = function(key, value) {
        return key + '=' + value
      }
      for (var k in obj) {
        aUrl.push(fnAdd(k, obj[k]))
      }
      return encodeURIComponent(aUrl.join('&'))
 }

53 去掉url前綴

function removeUrlPrefix(a) {
  a = a
    .replace(/:/g, ":")
    .replace(/./g, ".")
    .replace(///g, "/");
  while (
    trim(a)
      .toLowerCase()
      .indexOf("http://") == 0
  ) {
    a = trim(a.replace(/http:///i, ""));
  }
  return a;
}

54 resize的操作

(function() {
  var fn = function() {
    var w = document.documentElement
        ? document.documentElement.clientWidth
        : document.body.clientWidth,
      r = 1255,
      b = Element.extend(document.body),
      classname = b.className;
    if (w < r) {
      //當(dāng)窗體的寬度小于1255的時候執(zhí)行相應(yīng)的操作
    } else {
      //當(dāng)窗體的寬度大于1255的時候執(zhí)行相應(yīng)的操作
    }
  };
  if (window.addEventListener) {
    window.addEventListener("resize", function() {
      fn();
    });
  } else if (window.attachEvent) {
    window.attachEvent("onresize", function() {
      fn();
    });
  }
  fn();
})();

55 替換全部

String.prototype.replaceAll = function(s1, s2) {
  return this.replace(new RegExp(s1, "gm"), s2);
};

56 設(shè)置cookie值

function setCookie(name, value, Hours) {
  var d = new Date();
  var offset = 8;
  var utc = d.getTime() + d.getTimezoneOffset() * 60000;
  var nd = utc + 3600000 * offset;
  var exp = new Date(nd);
  exp.setTime(exp.getTime() + Hours * 60 * 60 * 1000);
  document.cookie =
    name +
    "=" +
    escape(value) +
    ";path=/;expires=" +
    exp.toGMTString() +
    ";domain=360doc.com;";
}

57 滾動到頂部

// 使用document.documentElement.scrollTop 或 document.body.scrollTop 獲取到頂部的距離,從頂部
// 滾動一小部分距離。使用window.requestAnimationFrame()來滾動。
// @example
// scrollToTop();
function scrollToTop() {
  var c = document.documentElement.scrollTop || document.body.scrollTop;
  if (c > 0) {
    window.requestAnimationFrame(scrollToTop);
    window.scrollTo(0, c - c / 8);
  }
}

58 設(shè)為首頁

function setHomepage() {
  if (document.all) {
    document.body.style.behavior = "url(#default#homepage)";
    document.body.setHomePage("http://w3cboy.com");
  } else if (window.sidebar) {
    if (window.netscape) {
      try {
        netscape.security.PrivilegeManager.enablePrivilege(
          "UniversalXPConnect"
        );
      } catch (e) {
        alert(
          "該操作被瀏覽器拒絕,如果想啟用該功能,請在地址欄內(nèi)輸入 about:config,然后將項 signed.applets.codebase_principal_support 值該為true"
        );
      }
    }
    var prefs = Components.classes[
      "@mozilla.org/preferences-service;1"
    ].getService(Components.interfaces.nsIPrefBranch);
    prefs.setCharPref("browser.startup.homepage", "http://w3cboy.com");
  }
}

59 按字母排序,對每行進行數(shù)組排序

function setSort() {
  var text = K1.value
    .split(/[rn]/)
    .sort()
    .join("rn"); //順序
  var test = K1.value
    .split(/[rn]/)
    .sort()
    .reverse()
    .join("rn"); //反序
  K1.value = K1.value != text ? text : test;
}

60 延時執(zhí)行

// 比如 sleep(1000) 意味著等待1000毫秒,還可從 Promise、Generator、Async/Await 等角度實現(xiàn)。
// Promise
const sleep = time => {
  return new Promise(resolve => setTimeout(resolve, time));
};
sleep(1000).then(() => {
  console.log(1);
});
// Generator
function* sleepGenerator(time) {
  yield new Promise(function(resolve, reject) {
    setTimeout(resolve, time);
  });
}
sleepGenerator(1000)
  .next()
  .value.then(() => {
    console.log(1);
  });
//async
function sleep(time) {
  return new Promise(resolve => setTimeout(resolve, time));
}
async function output() {
  let out = await sleep(1000);
  console.log(1);
  return out;
}
output();
function sleep(callback, time) {
  if (typeof callback === "function") {
    setTimeout(callback, time);
  }
}
function output() {
  console.log(1);
}
sleep(output, 1000);

61 清除腳本內(nèi)容

function stripscript(s) {
  return s.replace(/<script.*?>.*?</script>/gi, "");
}

62 判斷是否以某個字符串開頭

String.prototype.startWith = function(s) {
  return this.indexOf(s) == 0;
};

63 時間個性化輸出功能

/*
1、< 60s, 顯示為“剛剛”
2、>= 1min && < 60 min, 顯示與當(dāng)前時間差“XX分鐘前”
3、>= 60min && < 1day, 顯示與當(dāng)前時間差“今天 XX:XX”
4、>= 1day && < 1year, 顯示日期“XX月XX日 XX:XX”
5、>= 1year, 顯示具體日期“XXXX年XX月XX日 XX:XX”
*/
function timeFormat(time) {
  var date = new Date(time),
    curDate = new Date(),
    year = date.getFullYear(),
    month = date.getMonth() + 10,
    day = date.getDate(),
    hour = date.getHours(),
    minute = date.getMinutes(),
    curYear = curDate.getFullYear(),
    curHour = curDate.getHours(),
    timeStr;
  if (year < curYear) {
    timeStr = year + "年" + month + "月" + day + "日 " + hour + ":" + minute;
  } else {
    var pastTime = curDate - date,
      pastH = pastTime / 3600000;
    if (pastH > curHour) {
      timeStr = month + "月" + day + "日 " + hour + ":" + minute;
    } else if (pastH >= 1) {
      timeStr = "今天 " + hour + ":" + minute + "分";
    } else {
      var pastM = curDate.getMinutes() - minute;
      if (pastM > 1) {
        timeStr = pastM + "分鐘前";
      } else {
        timeStr = "剛剛";
      }
    }
  }
  return timeStr;
}

64 半角轉(zhuǎn)換為全角函數(shù)

function toDBC(str) {
  var result = "";
  for (var i = 0; i < str.length; i++) {
    code = str.charCodeAt(i);
    if (code >= 33 && code <= 126) {
      result += String.fromCharCode(str.charCodeAt(i) + 65248);
    } else if (code == 32) {
      result += String.fromCharCode(str.charCodeAt(i) + 12288 - 32);
    } else {
      result += str.charAt(i);
    }
  }
  return result;
}

65 全角轉(zhuǎn)換為半角函數(shù)

function toCDB(str) {
  var result = "";
  for (var i = 0; i < str.length; i++) {
    code = str.charCodeAt(i);
    if (code >= 65281 && code <= 65374) {
      result += String.fromCharCode(str.charCodeAt(i) - 65248);
    } else if (code == 12288) {
      result += String.fromCharCode(str.charCodeAt(i) - 12288 + 32);
    } else {
      result += str.charAt(i);
    }
  }
  return result;
}

66 金額大寫轉(zhuǎn)換函數(shù)

function transform(tranvalue) {
  try {
    var i = 1;
    var dw2 = new Array("", "萬", "億"); //大單位
    var dw1 = new Array("拾", "佰", "仟"); //小單位
    var dw = new Array(
      "零",
      "壹",
      "貳",
      "叁",
      "肆",
      "伍",
      "陸",
      "柒",
      "捌",
      "玖"
    );
    //整數(shù)部分用
    //以下是小寫轉(zhuǎn)換成大寫顯示在合計大寫的文本框中
    //分離整數(shù)與小數(shù)
    var source = splits(tranvalue);
    var num = source[0];
    var dig = source[1];
    //轉(zhuǎn)換整數(shù)部分
    var k1 = 0; //計小單位
    var k2 = 0; //計大單位
    var sum = 0;
    var str = "";
    var len = source[0].length; //整數(shù)的長度
    for (i = 1; i <= len; i++) {
      var n = source[0].charAt(len - i); //取得某個位數(shù)上的數(shù)字
      var bn = 0;
      if (len - i - 1 >= 0) {
        bn = source[0].charAt(len - i - 1); //取得某個位數(shù)前一位上的數(shù)字
      }
      sum = sum + Number(n);
      if (sum != 0) {
        str = dw[Number(n)].concat(str); //取得該數(shù)字對應(yīng)的大寫數(shù)字,并插入到str字符串的前面
        if (n == "0") sum = 0;
      }
      if (len - i - 1 >= 0) {
        //在數(shù)字范圍內(nèi)
        if (k1 != 3) {
          //加小單位
          if (bn != 0) {
            str = dw1[k1].concat(str);
          }
          k1++;
        } else {
          //不加小單位,加大單位
          k1 = 0;
          var temp = str.charAt(0);
          if (temp == "萬" || temp == "億")
            //若大單位前沒有數(shù)字則舍去大單位
            str = str.substr(1, str.length - 1);
          str = dw2[k2].concat(str);
          sum = 0;
        }
      }
      if (k1 == 3) {
        //小單位到千則大單位進一
        k2++;
      }
    }
    //轉(zhuǎn)換小數(shù)部分
    var strdig = "";
    if (dig != "") {
      var n = dig.charAt(0);
      if (n != 0) {
        strdig += dw[Number(n)] + "角"; //加數(shù)字
      }
      var n = dig.charAt(1);
      if (n != 0) {
        strdig += dw[Number(n)] + "分"; //加數(shù)字
      }
    }
    str += "元" + strdig;
  } catch (e) {
    return "0元";
  }
  return str;
}
//拆分整數(shù)與小數(shù)
function splits(tranvalue) {
  var value = new Array("", "");
  temp = tranvalue.split(".");
  for (var i = 0; i < temp.length; i++) {
    value = temp;
  }
  return value;
}

67 清除空格

String.prototype.trim = function() {
  var reExtraSpace = /^s*(.*?)s+$/;
  return this.replace(reExtraSpace, "$1");
};
// 清除左空格
function ltrim(s) {
  return s.replace(/^(s*| *)/, "");
}
// 清除右空格
function rtrim(s) {
  return s.replace(/(s*| *)$/, "");
}

68 隨機數(shù)時間戳

function uniqueId() {
  var a = Math.random,
    b = parseInt;
  return (
    Number(new Date()).toString() + b(10 * a()) + b(10 * a()) + b(10 * a())
  );
}

69 實現(xiàn)utf8解碼

function utf8_decode(str_data) {
  var tmp_arr = [],
    i = 0,
    ac = 0,
    c1 = 0,
    c2 = 0,
    c3 = 0;
  str_data += "";
  while (i < str_data.length) {
    c1 = str_data.charCodeAt(i);
    if (c1 < 128) {
      tmp_arr[ac++] = String.fromCharCode(c1);
      i++;
    } else if (c1 > 191 && c1 < 224) {
      c2 = str_data.charCodeAt(i + 1);
      tmp_arr[ac++] = String.fromCharCode(((c1 & 31) << 6) | (c2 & 63));
      i += 2;
    } else {
      c2 = str_data.charCodeAt(i + 1);
      c3 = str_data.charCodeAt(i + 2);
      tmp_arr[ac++] = String.fromCharCode(
        ((c1 & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63)
      );
      i += 3;
    }
  }
  return tmp_arr.join("");
}

以下的幾個函數(shù),用作常見的輸入值校驗和替換操作,主要針對中國大陸地區(qū)的校驗規(guī)則:

70 校驗是否為一個數(shù)字,以及該數(shù)字小數(shù)點位數(shù)是否與參數(shù)floats一致

校驗規(guī)則:

  • 若參數(shù)floats有值,則校驗該數(shù)字小數(shù)點后的位數(shù)。
  • 若參數(shù)floats沒有值,則僅僅校驗是否為數(shù)字。
function isNum(value,floats=null){
    let regexp = new RegExp(`^[1-9][0-9]*.[0-9]{${floats}}$|^0.[0-9]{${floats}}$`);
    return typeof value === 'number' && floats?regexp.test(String(value)):true;
}
function anysicIntLength(minLength,maxLength){
    let result_str = '';
    if(minLength){
        switch(maxLength){
            case undefined:
                result_str = result_str.concat(`{${minLength-1}}`);
                break;
            case null:
                result_str = result_str.concat(`{${minLength-1},}`);
                break;
            default:
                result_str = result_str.concat(`{${minLength-1},${maxLength-1}}`);
        }
    }else{
        result_str = result_str.concat('*');
    }
    return result_str;
}

71 校驗是否為非零的正整數(shù)

function isInt(value,minLength=null,maxLength=undefined){
    if(!isNum(value)) return false;
    let regexp = new RegExp(`^-?[1-9][0-9]${anysicIntLength(minLength,maxLength)}$`);
    return regexp.test(value.toString());
}

72 校驗是否為非零的正整數(shù)

function isPInt(value,minLength=null,maxLength=undefined) {
    if(!isNum(value)) return false;
    let regexp = new RegExp(`^[1-9][0-9]${anysicIntLength(minLength,maxLength)}$`);
    return regexp.test(value.toString());
}

73 校驗是否為非零的負整數(shù)

function isNInt(value,minLength=null,maxLength=undefined){
    if(!isNum(value)) return false;
    let regexp = new RegExp(`^-[1-9][0-9]${anysicIntLength(minLength,maxLength)}$`);
    return regexp.test(value.toString());
}

74 校驗整數(shù)是否在取值范圍內(nèi)

校驗規(guī)則:

  • minInt為在取值范圍中最小的整數(shù)
  • maxInt為在取值范圍中最大的整數(shù)
function checkIntRange(value,minInt,maxInt=9007199254740991){
    return Boolean(isInt(value) && (Boolean(minInt!=undefined && minInt!=null)?value>=minInt:true) && (value<=maxInt));
}

75 校驗是否為中國大陸傳真或固定電話號碼

function isFax(str) {
    return /^([0-9]{3,4})?[0-9]{7,8}$|^([0-9]{3,4}-)?[0-9]{7,8}$/.test(str);
}

76 校驗是否為中國大陸手機號

function isTel(value) {
    return /^1[3,4,5,6,7,8,9][0-9]{9}$/.test(value.toString());
}

77 校驗是否為郵箱地址

function isEmail(str) {
    return /^[a-zA-Z0-9_-]+@[a-zA-Z0-9_-]+(.[a-zA-Z0-9_-]+)+$/.test(str);
}

78 校驗是否為QQ號碼

校驗規(guī)則:

  • 非0開頭的5位-13位整數(shù)
function isQQ(value) {
    return /^[1-9][0-9]{4,12}$/.test(value.toString());
}

79 校驗是否為網(wǎng)址

校驗規(guī)則:

  • 以https://、http://、ftp://、rtsp://、mms://開頭、或者沒有這些開頭
  • 可以沒有www開頭(或其他二級域名),僅域名
  • 網(wǎng)頁地址中允許出現(xiàn)/%*?@&等其他允許的符
function isURL(str) {
    return /^(https://|http://|ftp://|rtsp://|mms://)?[a-zA-Z0-9_-]+(.[a-zA-Z0-9_-]+)+[/=?%-&_~`@[]':+!]*([^<>""])*$/.test(str);
}

80 校驗是否為不含端口號的IP地址

校驗規(guī)則:

IP格式為xxx.xxx.xxx.xxx,每一項數(shù)字取值范圍為0-255

除0以外其他數(shù)字不能以0開頭,比如02

function isIP(str) {
    return /^((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9]).){3}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])$/.test(str);
}

81 校驗是否為IPv6地址

校驗規(guī)則:

支持IPv6正常格式

支持IPv6壓縮格式

function isIPv6(str){
    return Boolean(str.match(/:/g)?str.match(/:/g).length<=7:false && /::/.test(str)?/^([da-f]{1,4}(:|::)){1,6}[da-f]{1,4}$/i.test(str):/^([da-f]{1,4}:){7}[da-f]{1,4}$/i.test(str));
}

82 校驗是否為中國大陸第二代居民身份證

校驗規(guī)則:

共18位,最后一位可為X(大小寫均可)

不能以0開頭

出生年月日會進行校驗:年份只能為18/19/2*開頭,月份只能為01-12,日只能為01-31

function isIDCard(str){
    return /^[1-9][0-9]{5}(18|19|(2[0-9]))[0-9]{2}((0[1-9])|(10|11|12))(([0-2][1-9])|10|20|30|31)[0-9]{3}[0-9Xx]$/.test(str);
}

83 校驗是否為中國大陸郵政編碼

參數(shù)value為數(shù)字或字符串

校驗規(guī)則:

  • 共6位,且不能以0開頭
function isPostCode(value){
    return /^[1-9][0-9]{5}$/.test(value.toString());
}

84 校驗兩個參數(shù)是否完全相同,包括類型

校驗規(guī)則:

  • 值相同,數(shù)據(jù)類型也相同
function same(firstValue,secondValue){
    return firstValue===secondValue;
}

85 校驗字符的長度是否在規(guī)定的范圍內(nèi)

校驗規(guī)則:

  • minInt為在取值范圍中最小的長度
  • maxInt為在取值范圍中最大的長度
function lengthRange(str,minLength,maxLength=9007199254740991) {
    return Boolean(str.length >= minLength && str.length <= maxLength);
}

86 校驗字符是否以字母開頭

校驗規(guī)則:

  • 必須以字母開頭
  • 開頭的字母不區(qū)分大小寫
function letterBegin(str){
    return /^[A-z]/.test(str);
}

87 校驗字符是否為純數(shù)字(整數(shù))

校驗規(guī)則:

  • 字符全部為正整數(shù)(包含0)
  • 可以以0開頭
function pureNum(str) {
    return /^[0-9]*$/.test(str);
}
function anysicPunctuation(str){
    if(!str) return null;
    let arr = str.split('').map(item => {
        return item = '\' + item;
    });
    return arr.join('|');
}
function getPunctuation(str){
    return anysicPunctuation(str) || '\~|\`|\!|\@|\#|\$|\%|\^|\&|\*|\(|\)|\-|\_|\+|\=|\||\|\[|\]|\{|\}|\;|\:|\"|\'|\,|\<|\.|\>|\/|\?';
}
function getExcludePunctuation(str){
    let regexp = new RegExp(`[${anysicPunctuation(str)}]`,'g');
    return getPunctuation(' ~`!@#$%^&*()-_+=[]{};:"',<.>/?'.replace(regexp,''));
}

88 返回字符串構(gòu)成種類(字母,數(shù)字,標(biāo)點符號)的數(shù)量

LIP縮寫的由來:L(letter 字母) + I(uint 數(shù)字) + P(punctuation 標(biāo)點符號)

參數(shù)punctuation的說明:

  • punctuation指可接受的標(biāo)點符號集
  • 若需自定義符號集,例如“僅包含中劃線和下劃線”,將參數(shù)設(shè)置為"-_"即可
  • 若不傳值或默認為null,則內(nèi)部默認標(biāo)點符號集為除空格外的其他英文標(biāo)點符號:~`!@#$%^&*()-_+=[]{};:"',<.>/?
function getLIPTypes(str,punctuation=null){
    let p_regexp = new RegExp('['+getPunctuation(punctuation)+']');
    return /[A-z]/.test(str) + /[0-9]/.test(str) + p_regexp.test(str);
}

89 校驗字符串構(gòu)成的種類數(shù)量是否大于或等于參數(shù)num的值。

通常用來校驗用戶設(shè)置的密碼復(fù)雜程度。

校驗規(guī)則:

  • 參數(shù)num為需要構(gòu)成的種類(字母、數(shù)字、標(biāo)點符號),該值只能是1-3。
  • 默認參數(shù)num的值為1,即表示:至少包含字母,數(shù)字,標(biāo)點符號中的1種
  • 若參數(shù)num的值為2,即表示:至少包含字母,數(shù)字,標(biāo)點符號中的2種
  • 若參數(shù)num的值為3,即表示:必須同時包含字母,數(shù)字,標(biāo)點符號
  • 參數(shù)punctuation指可接受的標(biāo)點符號集,具體設(shè)定可參考getLIPTypes()方法中關(guān)于標(biāo)點符號集的解釋。
function pureLIP(str,num=1,punctuation=null){
    let regexp = new RegExp(`[^A-z0-9|${getPunctuation(punctuation)}]`);
    return Boolean(!regexp.test(str) && getLIPTypes(str,punctuation)>= num);
}

90 清除所有空格

function clearSpaces(str){
    return str.replace(/[ ]/g,'');
}

91 清除所有中文字符(包括中文標(biāo)點符號)

function clearCNChars(str){
    return str.replace(/[\u4e00-\u9fa5]/g,'');
}

92 清除所有中文字符及空格

function clearCNCharsAndSpaces(str){
    return str.replace(/[\u4e00-\u9fa5 ]/g,'');
}

93 除保留標(biāo)點符號集以外,清除其他所有英文的標(biāo)點符號(含空格)

全部英文標(biāo)點符號為:~`!@#$%^&*()-_+=[]{};:"',<.>/?

參數(shù)excludePunctuation指需要保留的標(biāo)點符號集,例如若傳遞的值為'_',即表示清除_以外的其他所有英文標(biāo)點符號。

function clearPunctuation(str,excludePunctuation=null){
    let regexp = new RegExp(`[${getExcludePunctuation(excludePunctuation)}]`,'g');
    return str.replace(regexp,'');
}

94 校驗是否包含空格

function haveSpace(str) {
    return /[ ]/.test(str);
}

95 校驗是否包含中文字符(包括中文標(biāo)點符號)

function haveCNChars(str){
    return /[\u4e00-\u9fa5]/.test(str);
}

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