我有一个带有一些GET参数的URL，如下所示：
www.test.com/t.html?a=1&b=3&c=m2-m3-m4-m5
我需要得到c的全部值。我试图读取URL，但只得到m2。如何使用JavaScript执行此操作？
当前回答
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] =>
)*/
其他回答
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] =>
)*/
我使用parseUri库。它允许您完全按照您的要求进行操作：
var uri = 'www.test.com/t.html&a=1&b=3&c=m2-m3-m4-m5';
var c = uri.queryKey['c'];
// c = 'm2-m3-m4-m5'
$_GET: function (param) {
var regex = new RegExp("(?:[?&]+" + param + "=)([^&]*)?", "i");
var match = regex.exec(window.location.href);
return match === null ? match : match[1];
}
我见过的大多数实现都错过了URL对名称和值的解码。
下面是一个通用的实用程序函数，它也可以进行正确的URL解码：
function getQueryParams(qs) {
qs = qs.split('+').join(' ');
var params = {},
tokens,
re = /[?&]?([^=]+)=([^&]*)/g;
while (tokens = re.exec(qs)) {
params[decodeURIComponent(tokens[1])] = decodeURIComponent(tokens[2]);
}
return params;
}
//var query = getQueryParams(document.location.search);
//alert(query.foo);
我尽可能喜欢速记：
网址：example.com/mortgage_calc.htm？pmts=120&intr=6.8&prin=10000
香草Javascript：
for ( var vObj = {}, i=0, vArr = window.location.search.substring(1).split('&');
i < vArr.length; v = vArr[i++].split('='), vObj[v[0]] = v[1] ){}
// vObj = {pmts: "120", intr: "6.8", prin: "10000"}
