js操作url参数

 1 function getQueStr(url, ref) //获取参数值
 2 {
 3     var str = url.substr(url.indexOf('?') + 1);
 4     if (str.indexOf('&') != -1) {
 5         var arr = str.split('&');
 6         for (i in arr) {
 7             if (arr[i].split('=')[0] == ref)
 8                 return arr[i].split('=')[1];
 9         }
10     }
11     else {
12         return url.substr(url.indexOf('=') + 1)
13     }
14 }
15 
16 function setQueStr(url, ref, value) //设置参数值
17 {
18     var str = "";
19     if (url.indexOf('?') != -1)
20         str = url.substr(url.indexOf('?') + 1);
21     else
22         return url + "?" + ref + "=" + value;
23     var returnurl = "";
24     var setparam = "";
25     var arr;
26     var modify = "0";
27 
28     if (str.indexOf('&') != -1) {
29         arr = str.split('&');
30 
31         for (i in arr) {
32             if (arr[i].split('=')[0] == ref) {
33                 setparam = value;
34                 modify = "1";
35             }
36             else {
37                 setparam = arr[i].split('=')[1];
38             }
39             returnurl = returnurl + arr[i].split('=')[0] + "=" + setparam + "&";
40         }
41 
42         returnurl = returnurl.substr(0, returnurl.length - 1);
43 
44         if (modify == "0")
45             if (returnurl == str)
46                 returnurl = returnurl + "&" + ref + "=" + value;
47     }
48     else {
49         if (str.indexOf('=') != -1) {
50             arr = str.split('=');
51 
52             if (arr[0] == ref) {
53                 setparam = value;
54                 modify = "1";
55             }
56             else {
57                 setparam = arr[1];
58             }
59             returnurl = arr[0] + "=" + setparam;
60             if (modify == "0")
61                 if (returnurl == str)
62                     returnurl = returnurl + "&" + ref + "=" + value;
63         }
64         else
65             returnurl = ref + "=" + value;
66     }
67     return url.substr(0, url.indexOf('?')) + "?" + returnurl;
68 }
69 
70 function delQueStr(url, ref) //删除指定参数值
71 {
72     var str = "";
73 
74     if (url.indexOf('?') != -1)
75         str = url.substr(url.indexOf('?') + 1);
76     else
77         return url;
78     var arr = "";
79     var returnurl = "";
80     var setparam = "";
81     if (str.indexOf('&') != -1) {
82         arr = str.split('&');
83         for (i in arr) {
84             if (arr[i].split('=')[0] != ref) {
85                 returnurl = returnurl + arr[i].split('=')[0] + "=" + arr[i].split('=')[1] + "&";
86             }
87         }
88         return url.substr(0, url.indexOf('?')) + "?" + returnurl.substr(0, returnurl.length - 1);
89     }
90     else {
91         arr = str.split('=');
92         if (arr[0] == ref)
93             return url.substr(0, url.indexOf('?'));
94         else
95             return url;
96     }
97 }
98 var str = window.location.href.replace(/(?|#)[^"]*/g, '');//删除所有参数值