JS获取request参数 和改变request参数

来源地址

http://www.jb51.net/article/32627.htm

http://www.oschina.net/code/snippet_1398304_44646

给request赋值

function changeURLPar(destiny, par, par_value) 
{ 
var pattern = par+'=([^&]*)'; 
var replaceText = par+'='+par_value; 
if (destiny.match(pattern)) 
{ 
var tmp = '/'+par+'=[^&]*/g'; 
tmp = destiny.replace(eval(tmp), replaceText); 
return (tmp); 
} 
else 
{ 
if (destiny.match('[\?]')) 
{ 
return destiny+'&'+ replaceText; 
} 
else 
{ 
return destiny+'?'+replaceText; 
} 
} 
return destiny+'\n'+par+'\n'+par_value; 
} 

使用

destiny是目标字符串，比如是http://www.huistd.com/?id=3&ttt=3
par是参数名，par_value是参数要更改的值，调用结果如下：
changeURLPar(test, 'id', 99); // http://www.huistd.com/?id=99&ttt=3
changeURLPar(test, 'haha', 33); // http://www.huistd.com/?id=99&ttt=3&haha=33 

取值

方法一：正则分析法



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 ;
}

这样调用：

alert(GetQueryString( "参数名1" ));

alert(GetQueryString( "参数名2" ));

alert(GetQueryString( "参数名3" ));

方法二：
"font-size: 16px;" > <code class="java string">"javascript"</code> <code class="java plain">></code> </div> <div class="line number25 index24 alt2"> <code class="java plain">function GetRequest() {</code> </div> <div class="line number26 index25 alt1"> <code class="java spaces">   </code> <code class="java plain">var url = location.search;</code> <code class="java comments">//获取url中"?"符后的字串</code> </div> <div class="line number27 index26 alt2"> <code class="java spaces">   </code> <code class="java plain">var theRequest =</code> <code class="java keyword">new</code> <code class="java plain">Object();</code> </div> <div class="line number28 index27 alt1"> <code class="java spaces">   </code> <code class="java keyword">if</code> <code class="java plain">(url.indexOf(</code> <code class="java string">"?"</code> <code class="java plain">) != -</code> <code class="java value">1</code> <code class="java plain">) {</code> </div> <div class="line number29 index28 alt2"> <code class="java spaces">      </code> <code class="java plain">var str = url.substr(</code> <code class="java value">1</code> <code class="java plain">);</code> </div> <div class="line number30 index29 alt1"> <code class="java spaces">      </code> <code class="java plain">strs = str.split(</code> <code class="java string">"&"</code> <code class="java plain">);</code> </div> <div class="line number31 index30 alt2"> <code class="java spaces">      </code> <code class="java keyword">for</code> <code class="java plain">(var i =</code> <code class="java value">0</code> <code class="java plain">; i < strs.length; i ++) {</code> </div> <div class="line number32 index31 alt1"> <code class="java spaces">         </code> <code class="java plain">theRequest[strs[i].split(</code> <code class="java string">"="</code> <code class="java plain">)[</code> <code class="java value">0</code> <code class="java plain">]]=unescape(strs[i].split(</code> <code class="java string">"="</code> <code class="java plain">)[</code> <code class="java value">1</code> <code class="java plain">]);</code> </div> <div class="line number33 index32 alt2"> <code class="java spaces">      </code> <code class="java plain">}</code> </div> <div class="line number34 index33 alt1"> <code class="java spaces">   </code> <code class="java plain">}</code> </div> <div class="line number35 index34 alt2"> <code class="java spaces">   </code> <code class="java keyword">return</code> <code class="java plain">theRequest;</code> </div> <div class="line number36 index35 alt1"> <code class="java plain">}</code> </div> <div class="line number37 index36 alt2"> <code class="java plain">

这样调用：
复制代码

<code class="java string">"javascript"</code> <code class="java plain">></code> </div> <div class="line number43 index42 alt2"> <code class="java plain">var Request = </code> <code class="java keyword">new</code> <code class="java plain">Object();</code> </div> <div class="line number44 index43 alt1"> <code class="java plain">Request = GetRequest();</code> </div> <div class="line number45 index44 alt2"> <code class="java plain">var 参数</code> <code class="java value">1</code> <code class="java plain">,参数</code> <code class="java value">2</code> <code class="java plain">,参数</code> <code class="java value">3</code> <code class="java plain">,参数N;</code> </div> <div class="line number46 index45 alt1"> <code class="java plain">参数</code> <code class="java value">1</code> <code class="java plain">= Request[</code> <code class="java string">'参数1'</code> <code class="java plain">];</code> </div> <div class="line number47 index46 alt2"> <code class="java plain">参数</code> <code class="java value">2</code> <code class="java plain">= Request[</code> <code class="java string">'参数2'</code> <code class="java plain">];</code> </div> <div class="line number48 index47 alt1"> <code class="java plain">参数</code> <code class="java value">3</code> <code class="java plain">= Request[</code> <code class="java string">'参数3'</code> <code class="java plain">];</code> </div> <div class="line number49 index48 alt2"> <code class="java plain">参数N = Request[</code> <code class="java string">'参数N'</code> <code class="java plain">];</code> </div> <div class="line number50 index49 alt1"> <code class="java plain">