你也可以使用Rodney Rehm的URI.js库。方法如下:-

var qs = URI('www.mysite.com/default.aspx?dest=aboutus.aspx').query(true); // == { dest : 'aboutus.aspx' }
    alert(qs.dest); // == aboutus.aspx

解析当前页面的查询字符串:-

var $_GET = URI(document.URL).query(true); // ala PHP
    alert($_GET['dest']); // == aboutus.aspx 

我也是!http://jsfiddle.net/drzaus/8EE8k/

(注:无花哨嵌套或重复检查)

deparam = (function(d,x,params,p,i,j) {
return function (qs) {
    // start bucket; can't cheat by setting it in scope declaration or it overwrites
    params = {};
    // remove preceding non-querystring, correct spaces, and split
    qs = qs.substring(qs.indexOf('?')+1).replace(x,' ').split('&');
    // march and parse
    for (i = qs.length; i > 0;) {
        p = qs[--i];
        // allow equals in value
        j = p.indexOf('=');
        // what if no val?
        if(j === -1) params[d(p)] = undefined;
        else params[d(p.substring(0,j))] = d(p.substring(j+1));
    }

    return params;
};//--  fn  deparam
})(decodeURIComponent, /\+/g);

和测试:

var tests = {};
tests["simple params"] = "ID=2&first=1&second=b";
tests["full url"] = "http://blah.com/?third=c&fourth=d&fifth=e";
tests['just ?'] = '?animal=bear&fruit=apple&building=Empire State Building&spaces=these+are+pluses';
tests['with equals'] = 'foo=bar&baz=quux&equals=with=extra=equals&grault=garply';
tests['no value'] = 'foo=bar&baz=&qux=quux';
tests['value omit'] = 'foo=bar&baz&qux=quux';

var $output = document.getElementById('output');
function output(msg) {
    msg = Array.prototype.slice.call(arguments, 0).join("\n");
    if($output) $output.innerHTML += "\n" + msg + "\n";
    else console.log(msg);
}
var results = {}; // save results, so we can confirm we're not incorrectly referencing
$.each(tests, function(msg, test) {
    var q = deparam(test);
    results[msg] = q;
    output(msg, test, JSON.stringify(q), $.param(q));
    output('-------------------');
});

output('=== confirming results non-overwrite ===');
$.each(results, function(msg, result) {
    output(msg, JSON.stringify(result));
    output('-------------------');
});

结果:

simple params
ID=2&first=1&second=b
{"second":"b","first":"1","ID":"2"}
second=b&first=1&ID=2
-------------------
full url
http://blah.com/?third=c&fourth=d&fifth=e
{"fifth":"e","fourth":"d","third":"c"}
fifth=e&fourth=d&third=c
-------------------
just ?
?animal=bear&fruit=apple&building=Empire State Building&spaces=these+are+pluses
{"spaces":"these are pluses","building":"Empire State Building","fruit":"apple","animal":"bear"}
spaces=these%20are%20pluses&building=Empire%20State%20Building&fruit=apple&animal=bear
-------------------
with equals
foo=bar&baz=quux&equals=with=extra=equals&grault=garply
{"grault":"garply","equals":"with=extra=equals","baz":"quux","foo":"bar"}
grault=garply&equals=with%3Dextra%3Dequals&baz=quux&foo=bar
-------------------
no value
foo=bar&baz=&qux=quux
{"qux":"quux","baz":"","foo":"bar"}
qux=quux&baz=&foo=bar
-------------------
value omit
foo=bar&baz&qux=quux
{"qux":"quux","foo":"bar"}   <-- it's there, i swear!
qux=quux&baz=&foo=bar        <-- ...see, jQuery found it
-------------------

function parseQuery(queryString) {
    var query = {};
    var pairs = (queryString[0] === '?' ? queryString.substr(1) : queryString).split('&');
    for (var i = 0; i < pairs.length; i++) {
        var pair = pairs[i].split('=');
        query[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1] || '');
    }
    return query;
}

将查询字符串hello=1&another=2转换为对象{hello: 1, another: 2}。从那里，很容易提取所需的变量。

也就是说，它不处理数组的情况，如“hello=1&hello=2&hello=3”。要使用这种方法，必须在添加之前检查所创建对象的属性是否存在，并将其值转换为数组，将任何额外的位压入。

下面是我的版本，基于上面Braceyard的版本，但解析为“字典”，并支持没有“=”的搜索参数。在JQuery $(document).ready()函数中使用它。参数以键/值对的形式存储在argsParsed中，你可能想保存在某个地方…

'use strict';

function parseQuery(search) {

    var args = search.substring(1).split('&');

    var argsParsed = {};

    var i, arg, kvp, key, value;

    for (i=0; i < args.length; i++) {

        arg = args[i];

        if (-1 === arg.indexOf('=')) {

            argsParsed[decodeURIComponent(arg).trim()] = true;
        }
        else {

            kvp = arg.split('=');

            key = decodeURIComponent(kvp[0]).trim();

            value = decodeURIComponent(kvp[1]).trim();

            argsParsed[key] = value;
        }
    }

    return argsParsed;
}

parseQuery(document.location.search);

下面的函数将用正则表达式解析搜索字符串，缓存结果并返回所请求变量的值:

window.getSearch = function(variable) {
  var parsedSearch;
  parsedSearch = window.parsedSearch || (function() {
    var match, re, ret;
    re = /\??(.*?)=([^\&]*)&?/gi;
    ret = {};
    while (match = re.exec(document.location.search)) {
      ret[match[1]] = match[2];
    }
    return window.parsedSearch = ret;
  })();
  return parsedSearch[variable];
};

您可以不带任何参数地调用它一次，然后使用窗口。parsedSearch对象，或者随后调用getSearch。 我还没有完全测试这个，正则表达式可能仍然需要一些调整…

如果你知道你将只有一个查询字符串变量，你可以简单地做:

var dest = location.search.replace(/^.*?\=/, '');