Javascript中Request类的实现 (转)
1、request.QueryString("参数")
//获取指定参数,返回字符串;
2、request.QueryStrings();
//获取全部参数,并返回数组;
3、request.setQuery("参数","参数的值");
//如果当前地址栏有此参数,那么将更新此参数,否则返回一个新的地址栏参数字符串。
例如:
当前地址栏参数字符串为:?name=a&site=never_online
alert(request.setQuery("name","blueDestiny"))
如果地址栏参数中有"name",那么返回?name=blueDestiny&site=never_online
setQuery方法有自动追加参数的功能。如:
当前地址栏参数字符串为:?site=never_online
alert(request.setQuery("name","blueDestiny"))
则返回?site=never_online&name=blueDestiny
同理,如果地址栏没有参数,也会自动追加参数
alert(request.setQuery("name","blueDestiny"))
返回?name=blueDestiny
//获取指定参数,返回字符串;
2、request.QueryStrings();
//获取全部参数,并返回数组;
3、request.setQuery("参数","参数的值");
//如果当前地址栏有此参数,那么将更新此参数,否则返回一个新的地址栏参数字符串。
例如:
当前地址栏参数字符串为:?name=a&site=never_online
alert(request.setQuery("name","blueDestiny"))
如果地址栏参数中有"name",那么返回?name=blueDestiny&site=never_online
setQuery方法有自动追加参数的功能。如:
当前地址栏参数字符串为:?site=never_online
alert(request.setQuery("name","blueDestiny"))
则返回?site=never_online&name=blueDestiny
同理,如果地址栏没有参数,也会自动追加参数
alert(request.setQuery("name","blueDestiny"))
返回?name=blueDestiny
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<SCRIPT LANGUAGE="JavaScript">
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<!--
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// author: never-online
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// web: never-online.net
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var request = {
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QueryString : function(val) {
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var uri = window.location.search;
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var re = new RegExp("" +val+ "\=([^\&\?]*)", "ig");
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return ((uri.match(re))?(uri.match(re)[0].substr(val.length+1)):null);
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},
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QueryStrings : function() {
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var uri = window.location.search;
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var re = /\w*\=([^\&\?]*)/ig;
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var retval=[];
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while ((arr = re.exec(uri)) != null)
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retval.push(arr[0]);
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return retval;
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},
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setQuery : function(val1, val2) {
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var a = this.QueryStrings();
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var retval = "";
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var seted = false;
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var re = new RegExp("^" +val1+ "\=([^\&\?]*)$", "ig");
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for(var i=0; i<a.length; i++) {
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if (re.test(a[i])) {
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seted = true;
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a[i] = val1 +"="+ val2;
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}
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}
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retval = a.join("&");
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return "?" +retval+ (seted ? "" : (retval ? "&" : "") +val1+ "=" +val2);
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}
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}
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alert(request.setQuery("e","b"))
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//-->
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</SCRIPT>
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