我在网站开发中经常用到的几个js函数01

 1 /**
 2  * 1、js获取地址栏参数
 3  */
 4 // 获取地址栏的参数数组
 5 function getUrlParams() {
 6     var search = window.location.search;
 7     // 写入数据字典
 8     var tmparray = search.substr(1, search.length).split("&");
 9     var paramsArray = new Array;
10     if (tmparray != null) {
11         for (var i = 0; i < tmparray.length; i++) {
12             var reg = /[=|^==]/; // 用=进行拆分，但不包括==
13             var set1 = tmparray[i].replace(reg, '&');
14             var tmpStr2 = set1.split('&');
15             var array = new Array;
16             array[tmpStr2[0]] = tmpStr2[1];
17             paramsArray.push(array);
18         }
19     }
20     // 将参数数组进行返回
21     return paramsArray;
22 }
23 
24 // 根据参数名称获取参数值
25 function getParamValue(name) {
26     var paramsArray = getUrlParams();
27     if (paramsArray != null) {
28         for (var i = 0; i < paramsArray.length; i++) {
29             for ( var j in paramsArray[i]) {
30                 if (j == name) {
31                     return paramsArray[i][j];
32                 }
33             }
34         }
35     }
36     return null;
37 }
38 
39 //2、返回cookies字符串中指定键对应的值
40 function getCookie(cname) {
41     var name = cname + "=";
42     var ca = document.cookie.split(';');
43     for (var i = 0; i < ca.length; i++) {
44         var c = ca[i].trim();
45         if (c.indexOf(name) == 0)
46             return c.substring(name.length, c.length);
47     }
48     return "";
49 }
50 
51 //3、json日期格式转换为正常格式
52 function ChangeDateFormat(jsondateNormal) {
53     try {
54         var jsondate = new String(jsondateNormal); //js估计没有把json的date类型认为是string,此处需要转换。
55         jsondate = jsondate.replace("/Date(", "").replace(")/", "");
56         if (jsondate.indexOf("+") > 0) {
57             jsondate = jsondate.substring(0, jsondate.indexOf("+"));
58         } else if (jsondate.indexOf("-") > 0) {
59             jsondate = jsondate.substring(0, jsondate.indexOf("-"));
60         }
61                 
62         var date = new Date(parseInt(jsondate, 10));
63         var month = date.getMonth() + 1 < 10 ? "0" + (date.getMonth() + 1) : date.getMonth() + 1;
64         var day = date.getDate() < 10 ? "0" + date.getDate() : date.getDate();
65         var hours = date.getHours() < 10 ? "0" + date.getHours() : date.getHours(); 
66         var minutes = date.getMinutes() < 10 ? "0" + date.getMinutes() : date.getMinutes(); 
67         var seconds = date.getSeconds() < 10 ? "0" + date.getSeconds() : date.getSeconds();
68         return date.getFullYear() + "-" + month + "-" + day + " " + hours + ":" + minutes + ":" + seconds;
69     } catch (ex) {
70         return "ERROR";
71     }
72 }
73 
74 //4、清除cookie
75 function clearCookie(){ 
76     var keys=document.cookie.match(/[^ =;]+(?=\=)/g); 
77     if (keys) { 
78     for (var i = keys.length; i--;) 
79     document.cookie=keys[i]+'=0;expires=' + new Date( 0).toUTCString() 
80     } 
81 }