var getQueryParam = function(param) {
    var found;
    window.location.search.substr(1).split("&").forEach(function(item) {
        if (param ==  item.split("=")[0]) {
            found = item.split("=")[1];
        }
    });
    return found;
};

在这里，我用这段代码将GET参数转换为一个对象，以便更容易地使用它们。

// Get Nav URL
function getNavUrl() {
    // Get URL
    return window.location.search.replace("?", "");
};

function getParameters(url) {
    // Params obj
    var params = {};
    // To lowercase
    url = url.toLowerCase();
    // To array
    url = url.split('&');

    // Iterate over URL parameters array
    var length = url.length;
    for(var i=0; i<length; i++) {
        // Create prop
        var prop = url[i].slice(0, url[i].search('='));
        // Create Val
        var value = url[i].slice(url[i].search('=')).replace('=', '');
        // Params New Attr
        params[prop] = value;
    }
    return params;
};

// Call of getParameters
console.log(getParameters(getNavUrl()));

var getQueryParam = function(param) {
    var found;
    window.location.search.substr(1).split("&").forEach(function(item) {
        if (param ==  item.split("=")[0]) {
            found = item.split("=")[1];
        }
    });
    return found;
};

这是另一个基于Kat和Bakudan例子的例子，但让它更通用一点。

function getParams ()
{
    var result = {};
    var tmp = [];

    location.search
        .substr (1)
        .split ("&")
        .forEach (function (item)
        {
            tmp = item.split ("=");
            result [tmp[0]] = decodeURIComponent (tmp[1]);
        });

    return result;
}

location.getParams = getParams;

console.log (location.getParams());
console.log (location.getParams()["returnurl"]);

这个解决方案处理URL解码:

var params = function() {
    function urldecode(str) {
        return decodeURIComponent((str+'').replace(/\+/g, '%20'));
    }

    function transformToAssocArray( prmstr ) {
        var params = {};
        var prmarr = prmstr.split("&");
        for ( var i = 0; i < prmarr.length; i++) {
            var tmparr = prmarr[i].split("=");
            params[tmparr[0]] = urldecode(tmparr[1]);
        }
        return params;
    }

    var prmstr = window.location.search.substr(1);
    return prmstr != null && prmstr != "" ? transformToAssocArray(prmstr) : {};
}();

用法:

console.log('someParam GET value is', params['someParam']);

如果您不介意使用库而不是自己的实现，请查看https://github.com/jgallen23/querystring。