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?
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
您可以添加一个输入框,然后要求用户将值复制到其中……这非常简单:
<h1>Hey User! Can you please copy the value out of the location bar where it says like, &m=2? Thanks! And then, if you could...paste it in the box below and click the Done button?</h1>
<input type='text' id='the-url-value' />
<input type='button' value='This is the Done button. Click here after you do all that other stuff I wrote.' />
<script>
//...read the value on click
好吧,但说真的。。。我发现了这段代码,它似乎很有用:
http://www.developerdrive.com/2013/08/turning-the-querystring-into-a-json-object-using-javascript/
function queryToJSON() {
var pairs = location.search.slice(1).split('&');
var result = {};
pairs.forEach(function(pair) {
pair = pair.split('=');
result[pair[0]] = decodeURIComponent(pair[1] || '');
});
return JSON.parse(JSON.stringify(result));
}
var query = queryToJSON();
其他回答
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);
从许多答案中学习(如VaMoose的、Gnarf的或Blixt的)。
您可以创建一个对象(或使用Location对象)并添加一个方法,该方法允许您获取URL参数,解码后使用JS样式:
Url = {
params: undefined,
get get(){
if(!this.params){
var vars = {};
if(url.length!==0)
url.replace(/[?&]+([^=&]+)=([^&]*)/gi, function(m,key,value){
key=decodeURIComponent(key);
if(typeof vars[key]==="undefined") {
vars[key]= decodeURIComponent(value);
}
else {
vars[key]= [].concat(vars[key], decodeURIComponent(value));
}
});
this.params = vars;
}
return this.params;
}
};
这允许只使用Url.get调用该方法。
第一次它将从url中获取对象,下次它将加载保存的对象。
实例
在url中,如?param1=param1Value¶m2=param2Value¶m1=param1Value2,参数的获取方式如下:
Url.get.param1 //["param1Value","param1Value2"]
Url.get.param2 //"param2Value"
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] =>
)*/
您可以添加一个输入框,然后要求用户将值复制到其中……这非常简单:
<h1>Hey User! Can you please copy the value out of the location bar where it says like, &m=2? Thanks! And then, if you could...paste it in the box below and click the Done button?</h1>
<input type='text' id='the-url-value' />
<input type='button' value='This is the Done button. Click here after you do all that other stuff I wrote.' />
<script>
//...read the value on click
好吧,但说真的。。。我发现了这段代码,它似乎很有用:
http://www.developerdrive.com/2013/08/turning-the-querystring-into-a-json-object-using-javascript/
function queryToJSON() {
var pairs = location.search.slice(1).split('&');
var result = {};
pairs.forEach(function(pair) {
pair = pair.split('=');
result[pair[0]] = decodeURIComponent(pair[1] || '');
});
return JSON.parse(JSON.stringify(result));
}
var query = queryToJSON();
这是有效的:
function getURLParameter(name) {
return decodeURIComponent((new RegExp('[?|&]' + name + '=' + '([^&;]+?)(&|#|;|$)').exec(location.href) || [null, ''])[1].replace(/\+/g, '%20')) || null;
}
我没有得到任何其他最好的答案。