以下代码将创建一个具有两个方法的对象：

isKeyExist:检查是否存在特定参数getValue：获取特定参数的值。

var QSParam = new function() {
       var qsParm = {};
       var query = window.location.search.substring(1);
       var params = query.split('&');
       for (var i = 0; i < params.length; i++) {
           var pos = params[i].indexOf('=');
           if (pos > 0) {
               var key = params[i].substring(0, pos);
               var val = params[i].substring(pos + 1);
               qsParm[key] = val;
           }
       }
       this.isKeyExist = function(query){
           if(qsParm[query]){
               return true;
           }
           else{
              return false;
           }
       };
       this.getValue = function(query){
           if(qsParm[query])
           {
               return qsParm[query];
           }
           throw "URL does not contain query "+ query;
       }
};

function GET() {
        var data = [];
        for(x = 0; x < arguments.length; ++x)
            data.push(location.href.match(new RegExp("/\?".concat(arguments[x],"=","([^\n&]*)")))[1])
                return data;
    }


example:
data = GET("id","name","foo");
query string : ?id=3&name=jet&foo=b
returns:
    data[0] // 3
    data[1] // jet
    data[2] // b
or
    alert(GET("id")[0]) // return 3

这些都是很好的答案，但我需要一些更强大的东西，我想你们可能都想拥有我创造的东西。

这是一种简单的库方法，可以对URL参数进行剖析和操作。静态方法有以下子方法，可以在主题URL上调用：

获取主机获取路径获取哈希setHash获取参数获取查询setParam（设置参数）获取参数hasParamremoveParam（删除参数）

例子：

URLParser(url).getParam('myparam1')

var url = "http://www.example.com/folder/mypage.html?myparam1=1&myparam2=2#something";

function URLParser(u){
    var path="",query="",hash="",params;
    if(u.indexOf("#") > 0){
        hash = u.substr(u.indexOf("#") + 1);
        u = u.substr(0 , u.indexOf("#"));
    }
    if(u.indexOf("?") > 0){
        path = u.substr(0 , u.indexOf("?"));
        query = u.substr(u.indexOf("?") + 1);
        params= query.split('&');
    }else
        path = u;
    return {
        getHost: function(){
            var hostexp = /\/\/([\w.-]*)/;
            var match = hostexp.exec(path);
            if (match != null && match.length > 1)
                return match[1];
            return "";
        },
        getPath: function(){
            var pathexp = /\/\/[\w.-]*(?:\/([^?]*))/;
            var match = pathexp.exec(path);
            if (match != null && match.length > 1)
                return match[1];
            return "";
        },
        getHash: function(){
            return hash;
        },
        getParams: function(){
            return params
        },
        getQuery: function(){
            return query;
        },
        setHash: function(value){
            if(query.length > 0)
                query = "?" + query;
            if(value.length > 0)
                query = query + "#" + value;
            return path + query;
        },
        setParam: function(name, value){
            if(!params){
                params= new Array();
            }
            params.push(name + '=' + value);
            for (var i = 0; i < params.length; i++) {
                if(query.length > 0)
                    query += "&";
                query += params[i];
            }
            if(query.length > 0)
                query = "?" + query;
            if(hash.length > 0)
                query = query + "#" + hash;
            return path + query;
        },
        getParam: function(name){
            if(params){
                for (var i = 0; i < params.length; i++) {
                    var pair = params[i].split('=');
                    if (decodeURIComponent(pair[0]) == name)
                        return decodeURIComponent(pair[1]);
                }
            }
            console.log('Query variable %s not found', name);
        },
        hasParam: function(name){
            if(params){
                for (var i = 0; i < params.length; i++) {
                    var pair = params[i].split('=');
                    if (decodeURIComponent(pair[0]) == name)
                        return true;
                }
            }
            console.log('Query variable %s not found', name);
        },
        removeParam: function(name){
            query = "";
            if(params){
                var newparams = new Array();
                for (var i = 0;i < params.length;i++) {
                    var pair = params[i].split('=');
                    if (decodeURIComponent(pair[0]) != name)
                          newparams .push(params[i]);
                }
                params = newparams;
                for (var i = 0; i < params.length; i++) {
                    if(query.length > 0)
                        query += "&";
                    query += params[i];
                }
            }
            if(query.length > 0)
                query = "?" + query;
            if(hash.length > 0)
                query = query + "#" + hash;
            return path + query;
        },
    }
}

document.write("Host: " + URLParser(url).getHost() + '<br>');
document.write("Path: " + URLParser(url).getPath() + '<br>');
document.write("Query: " + URLParser(url).getQuery() + '<br>');
document.write("Hash: " + URLParser(url).getHash() + '<br>');
document.write("Params Array: " + URLParser(url).getParams() + '<br>');
document.write("Param: " + URLParser(url).getParam('myparam1') + '<br>');
document.write("Has Param: " + URLParser(url).hasParam('myparam1') + '<br>');

document.write(url + '<br>');

// Remove the first parameter
url = URLParser(url).removeParam('myparam1');
document.write(url + ' - Remove the first parameter<br>');

// Add a third parameter
url = URLParser(url).setParam('myparam3',3);
document.write(url + ' - Add a third parameter<br>');

// Remove the second parameter
url = URLParser(url).removeParam('myparam2');
document.write(url + ' - Remove the second parameter<br>');

// Add a hash
url = URLParser(url).setHash('newhash');
document.write(url + ' - Set Hash<br>');

// Remove the last parameter
url = URLParser(url).removeParam('myparam3');
document.write(url + ' - Remove the last parameter<br>');

// Remove a parameter that doesn't exist
url = URLParser(url).removeParam('myparam3');
document.write(url + ' - Remove a parameter that doesn\"t exist<br>');

获取查询的一行代码：

var value = location.search.match(new RegExp(key + "=(.*?)($|\&)", "i"))[1];

我宁愿使用split（）而不是Regex执行此操作：

function getUrlParams() {
    var result = {};
    var params = (window.location.search.split('?')[1] || '').split('&');
    for(var param in params) {
        if (params.hasOwnProperty(param)) {
            var paramParts = params[param].split('=');
            result[paramParts[0]] = decodeURIComponent(paramParts[1] || "");
        }
    }
    return result;
}

这是JavaScript从URL获取int和String参数值的最简单和最小的函数

/* THIS FUNCTION IS TO FETCH INT PARAMETER VALUES */

function getParameterint(param) {
            var val = document.URL;
            var url = val.substr(val.indexOf(param))  
            var n=parseInt(url.replace(param+"=",""));
            alert(n); 
}
getParameteraint("page");
getParameteraint("pagee");

/*THIS FUNCTION IS TO FETCH STRING PARAMETER*/
function getParameterstr(param) {
            var val = document.URL;
            var url = val.substr(val.indexOf(param))  
            var n=url.replace(param+"=","");
            alert(n); 
}
getParameterstr("str");

来源和演示：http://bloggerplugnplay.blogspot.in/2012/08/how-to-get-url-parameter-in-javascript.html