获取查询的一行代码：

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

// Parse query string
var params = {}, queryString = location.hash.substring(1),
    regex = /([^&=]+)=([^&]*)/g,
    m;
while (m = regex.exec(queryString)) {
    params[decodeURIComponent(m[1])] = decodeURIComponent(m[2]);
}

如果您有Undercore.js或lodash，一种快速而肮脏的方法是：

_.object(window.location.search.slice(1).split('&').map(function (val) { return val.split('='); }));

最漂亮但最基本的：

data = {};
$.each(
    location.search.substr(1).split('&').filter(Boolean).map(function(kvpairs){
        return kvpairs.split('=')
    }),
    function(i,values) {
        data[values.shift()] = values.join('=')
    }
);

它不处理值列表，例如？a[]=1&a[]2

tl；博士

一个快速、完整的解决方案，可处理多值键和编码字符。

// using ES5   (200 characters)
var qd = {};
if (location.search) location.search.substr(1).split("&").forEach(function(item) {var s = item.split("="), k = s[0], v = s[1] && decodeURIComponent(s[1]); (qd[k] = qd[k] || []).push(v)})

// using ES6   (23 characters cooler)
var qd = {};
if (location.search) location.search.substr(1).split`&`.forEach(item => {let [k,v] = item.split`=`; v = v && decodeURIComponent(v); (qd[k] = qd[k] || []).push(v)})

// as a function with reduce
function getQueryParams() {
  return location.search
    ? location.search.substr(1).split`&`.reduce((qd, item) => {let [k,v] = item.split`=`; v = v && decodeURIComponent(v); (qd[k] = qd[k] || []).push(v); return qd}, {})
    : {}
}

多行：

var qd = {};
if (location.search) location.search.substr(1).split("&").forEach(function(item) {
    var s = item.split("="),
        k = s[0],
        v = s[1] && decodeURIComponent(s[1]); //  null-coalescing / short-circuit
    //(k in qd) ? qd[k].push(v) : qd[k] = [v]
    (qd[k] = qd[k] || []).push(v) // null-coalescing / short-circuit
})

这是什么代码。。。“零合并”，短路评估ES6解构赋值、箭头函数、模板字符串####示例：

"?a=1&b=0&c=3&d&e&a=5&a=t%20e%20x%20t&e=http%3A%2F%2Fw3schools.com%2Fmy%20test.asp%3Fname%3Dståle%26car%3Dsaab"
> qd
a: ["1", "5", "t e x t"]
b: ["0"]
c: ["3"]
d: [undefined]
e: [undefined, "http://w3schools.com/my test.asp?name=ståle&car=saab"]

> qd.a[1]    // "5"
> qd["a"][1] // "5"

---

阅读更多。。。关于Vanilla JavaScript解决方案。

要访问URL的不同部分，请使用位置。（搜索|哈希）

最简单（虚拟）解决方案

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

正确处理空钥匙。使用找到的最后一个值覆盖多键。

"?a=1&b=0&c=3&d&e&a=5"
> queryDict
a: "5"
b: "0"
c: "3"
d: undefined
e: undefined

多值键

简单的密钥检查（字典中的项目）？dict.item.push（val）：dict.item=[val]

var qd = {};
location.search.substr(1).split("&").forEach(function(item) {(item.split("=")[0] in qd) ? qd[item.split("=")[0]].push(item.split("=")[1]) : qd[item.split("=")[0]] = [item.split("=")[1]]})

现在返回数组。按qd.key[index]或qd[key][index]访问值

> qd
a: ["1", "5"]
b: ["0"]
c: ["3"]
d: [undefined]
e: [undefined]

编码字符？

对第二次或两次拆分使用decodeURIComponent（）。

var qd = {};
location.search.substr(1).split("&").forEach(function(item) {var k = item.split("=")[0], v = decodeURIComponent(item.split("=")[1]); (k in qd) ? qd[k].push(v) : qd[k] = [v]})

####示例：

"?a=1&b=0&c=3&d&e&a=5&a=t%20e%20x%20t&e=http%3A%2F%2Fw3schools.com%2Fmy%20test.asp%3Fname%3Dståle%26car%3Dsaab"
> qd
a: ["1", "5", "t e x t"]
b: ["0"]
c: ["3"]
d: ["undefined"]  // decodeURIComponent(undefined) returns "undefined" !!!*
e: ["undefined", "http://w3schools.com/my test.asp?name=ståle&car=saab"]

---

# From comments **\*!!!** Please note, that `decodeURIComponent(undefined)` returns string `"undefined"`. The solution lies in a simple usage of [`&&`][5], which ensures that `decodeURIComponent()` is not called on undefined values. _(See the "complete solution" at the top.)_

v = v && decodeURIComponent(v);

If the querystring is empty (`location.search == ""`), the result is somewhat misleading `qd == {"": undefined}`. It is suggested to check the querystring before launching the parsing function likeso:

if (location.search) location.search.substr(1).split("&").forEach(...)

这对我不起作用，我想匹配吗？b，因为b参数存在，并且不匹配？返回r参数，这是我的解决方案。

window.query_param = function(name) {
  var param_value, params;

  params = location.search.replace(/^\?/, '');
  params = _.map(params.split('&'), function(s) {
    return s.split('=');
  });

  param_value = _.select(params, function(s) {
    return s.first === name;
  })[0];

  if (param_value) {
    return decodeURIComponent(param_value[1] || '');
  } else {
    return null;
  }
};