JS常用代码

摘要：通信移动端打电话移动端发送短信终端或者浏览器终端正则手机号码电子邮箱删除表情获取用户地理位置错误代码用户不允许地理定位无法获取当前位置操作超时未知错误数组去重调用使用

1、移动端打电话

window.location.href = ("tel:" + phone);

2、移动端发送短信--Android、iOS

var u = navigator.userAgent, app = navigator.appVersion;
var isAndroid = u.indexOf("Android") > -1 || u.indexOf("Linux") > -1; // android终端或者uc浏览器
var isiOS = !!u.match(/(i[^;]+;( U;)? CPU.+Mac OS X/); //ios终端
//sms:10086?body=1008611 sms:10086&body=1008611
if(isAndroid == true) {
       window.location.href=("sms:10694006929598?body="+text);
} else if(isiOS == true) {
        window.location.href=("sms:10694006929598&body="+text);
}

手机号码

   /^1(3[0-9]|4[57]|5[0-35-9]|7[0135678]|8[0-9])d{8}$/

电子邮箱

   /^([a-z0-9_.-]+)@([da-z.-]+).([a-z.]{2,6})$/
   /^[a-zd]+(.[a-zd]+)*@([da-z](-[da-z])?)+(.{1,2}[a-z]+)+$/

删除 emoji 表情

   str.replace(/[uD800-uDBFF][uDC00-uDFFF]/g,"");

获取用户地理位置

错误代码：
-Permission denied - 用户不允许地理定位
-Position unavailable - 无法获取当前位置
-Timeout - 操作超时
-Unknown error - 未知错误

Array.prototype.unique_filterArray = Array.prototype.unique_filterArray || function(){
    return this.filter(function(item, index, arr){
        return arr.indexOf(item) === index;
    });
}
 Array.prototype.unique = function(){
  var res = [];
  var json = {};
  for(var i = 0; i < this.length; i++){
   if(!json[this[i]]){
    res.push(this[i]);
    json[this[i]] = 1;
   }
  }
  return res;
 };
arr.unique();//调用 Array.prototype.unique
Array.prototype.remove = function(val) {
  var index = this.indexOf(val);
  if (index > -1) {
   this.splice(index, 1);
  }
 };
使用JQ删除某一项 -- arr.splice($.inArray(item,arr),1);

*将GET参数按照键值对的形式输出json
var str = "http://item.taobao.com/item.h...";*

  function getUrl(str) {
   var data1=str.split("?")[1];
   var result={};
   if(data1.indexOf("&") > -1) {
    var bigArr=data1.split("&");
    for(var a=0,b=bigArr.length;a


解析单个参数
   function getQueryString(name) {
       var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
       var r = window.location.search.substr(1).match(reg);
       if (r != null) return unescape(r[2]); return null;
   }
   
   http://10.8.15.176:666/bindSuccess/coupons.html?values=uri1&gets=uri2&types=uri3
   
   var values=getQueryString("values") ||300,
       gets=getQueryString("gets"),
       types=getQueryString("types");



JS -- 实现数组迭代方法
1、实现arr.forEach() IE8及以下不支持原生 Array.prototype.forEach
参考底部 Array.prototype.forEach
if (!Array.prototype.forEach) {
  Array.prototype.forEach = function(callback, thisArg) {
    var T, k;
    if (this == null) {
      throw new TypeError("this is null or not defined");
    }
    var O = Object(this);
    var len = O.length >>> 0;
    // 所有非数值转换成0；所有大于等于 0 等数取整数部分
    if (typeof callback !== "function") {
      throw new TypeError(callback + " is not a function");
    }
    if (arguments.length > 1) {
      T = thisArg;
    }
    k = 0;
    while (k < len) {
      var kValue;
      if (k in O) {
        kValue = O[k];
        callback.call(T, kValue, k, O);
      }
      k++;
    }
  };
}

2、实现arr.filter()
参考底部 Array.prototype.filter
if (!Array.prototype.filter){
  Array.prototype.filter = function(func, thisArg) {
    "use strict";
    if ( ! ((typeof func === "Function" || typeof func === "function") && this) )
        throw new TypeError();
   
    var len = this.length >>> 0,
        res = new Array(len), // preallocate array
        t = this, c = 0, i = -1;
    if (thisArg === undefined){
      while (++i !== len){
        // checks to see if the key was set
        if (i in this){
          if (func(t[i], i, t)){
            res[c++] = t[i];
          }
        }
      }
    }
    else{
      while (++i !== len){
        // checks to see if the key was set
        if (i in this){
          if (func.call(thisArg, t[i], i, t)){
            res[c++] = t[i];
          }
        }
      }
    }
    res.length = c; // shrink down array to proper size
    return res;
  };
}


JS -- cookie
var cookieUtil = {
get: function(name) {
    var cookieName = encodeURIComponent(name) + "=",
        cookieStart = document.cookie.indexOf(cookieName),
        cookieValue = null;
    if(cookieStart > -1) {
        var cookieEnd = document.cookie.indexOf(";", cookieStart);
        if(cookieEnd === -1) {
            cookieEnd = document.cookie.length;
        }
        cookieValue = decodeURIComponent(document.cookie.substring(cookieStart+cookieName.length, cookieEnd));
    }
    return cookieValue;
},
set: function(name, value, expires, path, domain, secure) {
    var cookieText = encodeURIComponent(name)+"="+encodeURIComponent(value);
    if(expires instanceof Date) {
        cookieText += "; expires=" + expires.toGMTString();
    } else if(typeof expires === "number") {
        cookieText += "; expires=" + (new Date(expires*24*60*60*1000+Date.now())).toGMTString();
    }
     (new Date(毫秒数)).toGMTString()
     7天后 (new Date(7*24*60*60*1000+Date.now())).toGMTString()
    if(path) { cookieText += "; path=" + path; }
    if(domain) { cookieText += "; domain=" + domain; }
    if(secure) { cookieText += "; secure"; }
    document.cookie = cookieText;
},
unset: function(name, path, domain, secure) { this.set(name, "", new Date(0), path, domain, secure); }
}
name: cookie唯一的名称 cookie必须经过URL编码 不区分大小写 实践中最好当作cookie区分大小写
value: 字符串值 必须经过URL编码
expires: 失效时间 cookie何时被删除的时间戳 默认情况下会话结束立即将所有cookie删除
path: 域 所有向该域的请求中都会包含cookie 可以包含子域名 也可以不包含
domain: 路径 对于指定域中的那个路径 应该向服务器发送cookie
secure: 安全标志 指定后，cookie只有在使用SSL连接时才会发送到服务器 是cookie中唯一一个非名值对的，直接包含secure