JS常用代碼

Shimmer 發(fā)布于2019-08-23 16:25 / 2747人閱讀

摘要：通信移動端打電話移動端發(fā)送短信終端或者瀏覽器終端正則手機號碼電子郵箱刪除表情獲取用戶地理位置錯誤代碼用戶不允許地理定位無法獲取當(dāng)前位置操作超時未知錯誤數(shù)組去重調(diào)用使用

JS -- 通信

1、移動端打電話

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

2、移動端發(fā)送短信--Android、iOS

var u = navigator.userAgent, app = navigator.appVersion;
var isAndroid = u.indexOf("Android") > -1 || u.indexOf("Linux") > -1; // android終端或者uc瀏覽器
var isiOS = !!u.match(/(i[^;]+;( U;)? CPU.+Mac OS X/); //ios終端
//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);
}

JS -- 正則

手機號碼

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

電子郵箱

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

刪除 emoji 表情

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

獲取用戶地理位置

錯誤代碼：
-Permission denied - 用戶不允許地理定位
-Position unavailable - 無法獲取當(dāng)前位置
-Timeout - 操作超時
-Unknown error - 未知錯誤

JS -- 數(shù)組去重

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();//調(diào)用 Array.prototype.unique
Array.prototype.remove = function(val) {
  var index = this.indexOf(val);
  if (index > -1) {
   this.splice(index, 1);
  }
 };
使用JQ刪除某一項 -- arr.splice($.inArray(item,arr),1);

JS -- 解析URI參數(shù)

*將GET參數(shù)按照鍵值對的形式輸出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


解析單個參數(shù)
   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 -- 實現(xiàn)數(shù)組迭代方法
1、實現(xiàn)arr.forEach() IE8及以下不支持原生 Array.prototype.forEach
參考底部 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;
    // 所有非數(shù)值轉(zhuǎn)換成0；所有大于等于 0 等數(shù)取整數(shù)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、實現(xiàn)arr.filter()
參考底部 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(毫秒數(shù))).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唯一的名稱 cookie必須經(jīng)過URL編碼 不區(qū)分大小寫 實踐中最好當(dāng)作cookie區(qū)分大小寫
value: 字符串值 必須經(jīng)過URL編碼
expires: 失效時間 cookie何時被刪除的時間戳 默認(rèn)情況下會話結(jié)束立即將所有cookie刪除
path: 域 所有向該域的請求中都會包含cookie 可以包含子域名 也可以不包含
domain: 路徑 對于指定域中的那個路徑 應(yīng)該向服務(wù)器發(fā)送cookie
secure: 安全標(biāo)志 指定后，cookie只有在使用SSL連接時才會發(fā)送到服務(wù)器 是cookie中唯一一個非名值對的，直接包含secure