在我的情况下（重定向到具有所有子url的新域）：：

window.location.replace("https://newdomain.com" + window.location.pathname);

// Read a page's GET URL variables and return them as an associative array.
function getUrlVars()
{
    var vars = [], hash;
    var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
    for(var i = 0; i < hashes.length; i++)
    {
        hash = hashes[i].split('=');
        vars.push(hash[0]);
        vars[hash[0]] = hash[1];
    }
    return vars;
}

// Usage for URL: http://my.site.com/location?locationId=53cc272c0364aefcb78756cd&shared=false
var id = getUrlVars()["locationId"];

从这里得到：http://jquery-howto.blogspot.ru/2009/09/get-url-parameters-values-with-jquery.html

以json形式从window.location中的搜索对象中提取所有url参数

export const getURLParams = location => {
    const searchParams = new URLSearchParams(location.search)
    const params = {}

    for (let key of searchParams.keys()) {
        params[key] = searchParams.get(key)
    }

    return params
}

console.log(getURLParams({ search: '?query=someting&anotherquery=anotherthing' }))

// --> {query: "someting", anotherquery: "anotherthing"}

PHP parse_str copycat..：）

// Handles also array params well
function parseQueryString(query) {
    var pars = (query != null ? query : "").replace(/&+/g, "&").split('&'),
        par, key, val, re = /^([\w]+)\[(.*)\]/i, ra, ks, ki, i = 0,
        params = {};

    while ((par = pars.shift()) && (par = par.split('=', 2))) {
        key = decodeURIComponent(par[0]);
        // prevent param value going to be "undefined" as string
        val = decodeURIComponent(par[1] || "").replace(/\+/g, " ");
        // check array params
        if (ra = re.exec(key)) {
            ks = ra[1];
            // init array param
            if (!(ks in params)) {
                params[ks] = {};
            }
            // set int key
            ki = (ra[2] != "") ? ra[2] : i++;
            // set array param
            params[ks][ki] = val;
            // go on..
            continue;
        }
        // set param
        params[key] = val;
    }

    return params;
}

var query = 'foo=1&bar=The+bar!%20&arr[]=a0&arr[]=a1&arr[s]=as&isset&arr[]=last';
var params = parseQueryString(query);
console.log(params)
console.log(params.foo)        // 1
console.log(params.bar)        // The bar!
console.log(params.arr[0])     // a0
console.log(params.arr[1])     // a1
console.log(params.arr.s)      // as
console.log(params.arr.none)   // undefined
console.log("isset" in params) // true like: isset($_GET['isset'])



/*
// in php
parse_str('foo=1&bar=The+bar!%20&arr[]=a0&arr[]=a1&arr[s]=as&isset&arr[]=last', $query);
print_r($query);

Array
(
    [foo] => 1
    [bar] => The bar!
    [arr] => Array
        (
            [0] => a0
            [1] => a1
            [s] => as
            [2] => last
        )

    [isset] =>
)*/

我们可以以更简单的方式获取c参数值，而不必循环所有参数，请参见下面的jQuery获取参数。

1.获取参数值：

var url = "www.test.com/t.html?a=1&b=3&c=m2-m3-m4-m5";

url.match(**/(c=)[0-9A-Za-z-]+/ig**)[0].replace('c=',"")

(or)

url.match(**/(c=)[0-z-]+/ig**)[0].replace('c=',"")

以字符串形式返回

“m2-m3-m4-m5”

2.要替换参数值：

var url = "www.test.com/t.html?a=1&b=3&c=m2-m3-m4-m5";

url.replace(**/(c=)[0-9A-Za-z-]+/ig, "c=m2345"**)

以下是用于将url查询参数解析为Object的angularJs源代码：

函数tryDecodeURIComponent（值）{尝试{返回decodeURIComponent（value）；}捕获（e）{//忽略任何无效的uri组件}}函数isDefined（value）｛return typeof value！==“undefined”；｝函数parseKeyValue（keyValue）{keyValue=keyValue.replace（/^\？/，“”）；var obj={}，key_value，key；var iter=（keyValue||“”）.split（'&'）；对于（var i=0；i<iter.length；i++）{var kV值=iter[i]；if（kV值）{key_value=kV值。替换（/\+/g，“%20”）。拆分（“=”）；key=tryDecodeURIComponent（key_value[0]）；if（isDefined（键））{var val=isDefined（key_value[1]）？tryDecodeURIComponent（key_value[1]）：true；if（！hasOwnProperty.call（obj，key））{obj[key]=val；}else-if（isArray（obj[key]））{obj[key].push（val）；}其他{obj[key]=[obj[key]，val]；}}}};返回obj；}警报（JSON.stringify（parseKeyValue（'？a=1&b=3&c=m2-m3-m4-m5'）））；

您可以将此函数添加到window.location：

window.location.query = function query(arg){
  q = parseKeyValue(this.search);
  if (!isDefined(arg)) {
    return q;
  }      
  if (q.hasOwnProperty(arg)) {
    return q[arg];
  } else {
    return "";
  }
}

// assuming you have this url :
// http://www.test.com/t.html?a=1&b=3&c=m2-m3-m4-m5

console.log(window.location.query())

// Object {a: "1", b: "3", c: "m2-m3-m4-m5"}

console.log(window.location.query('c'))

// "m2-m3-m4-m5"