How do I parse an URL with JavaScript (also with jQuery)?
For instance I have this in my string,
url = "http://example.com/form_image_edit.php?img_id=33"
I want to get the value of img_id
I know I can do this easily with PHP with parse_url()
, but I want to know how it is possible with JavaScript.
This question is related to
javascript
jquery
parse-url
Try this:
var url = window.location;
var urlAux = url.split('=');
var img_id = urlAux[1]
I wrote a javascript url parsing library, URL.js, you can use it for this.
Example:
url.parse("http://mysite.com/form_image_edit.php?img_id=33").get.img_id === "33"
Something like this should work for you. Even if there are multiple query string values then this function should return the value of your desired key.
function getQSValue(url)
{
key = 'img_id';
query_string = url.split('?');
string_values = query_string[1].split('&');
for(i=0; i < string_values.length; i++)
{
if( string_values[i].match(key))
req_value = string_values[i].split('=');
}
return req_value[1];
}
var url = window.location;
var urlAux = url.split('=');
var img_id = urlAux[1]
Worked for me. But the first var should be var url = window.location.href
Existing good jQuery plugin Purl (A JavaScript URL parser).This utility can be used in two ways - with jQuery or without...
One liner:
location.search.replace('?','').split('&').reduce(function(s,c){var t=c.split('=');s[t[0]]=t[1];return s;},{})
You can use the jquery plugin http://plugins.jquery.com/url. $.url("?img_id")
will return 33
This should fix a few edge-cases in kobe's answer:
function getQueryParam(url, key) {
var queryStartPos = url.indexOf('?');
if (queryStartPos === -1) {
return;
}
var params = url.substring(queryStartPos + 1).split('&');
for (var i = 0; i < params.length; i++) {
var pairs = params[i].split('=');
if (decodeURIComponent(pairs.shift()) == key) {
return decodeURIComponent(pairs.join('='));
}
}
}
getQueryParam('http://example.com/form_image_edit.php?img_id=33', 'img_id');
// outputs "33"
Web Workers provide an utils URL for url parsing.
got it from google, try to use this method
function getQuerystring2(key, default_)
{
if (default_==null)
{
default_="";
}
var search = unescape(location.search);
if (search == "")
{
return default_;
}
search = search.substr(1);
var params = search.split("&");
for (var i = 0; i < params.length; i++)
{
var pairs = params[i].split("=");
if(pairs[0] == key)
{
return pairs[1];
}
}
return default_;
}
If your string is called s
then
var id = s.match(/img_id=([^&]+)/)[1]
will give it to you.
function parse_url(str, component) {
// discuss at: http://phpjs.org/functions/parse_url/
// original by: Steven Levithan (http://blog.stevenlevithan.com)
// reimplemented by: Brett Zamir (http://brett-zamir.me)
// input by: Lorenzo Pisani
// input by: Tony
// improved by: Brett Zamir (http://brett-zamir.me)
// note: original by http://stevenlevithan.com/demo/parseuri/js/assets/parseuri.js
// note: blog post at http://blog.stevenlevithan.com/archives/parseuri
// note: demo at http://stevenlevithan.com/demo/parseuri/js/assets/parseuri.js
// note: Does not replace invalid characters with '_' as in PHP, nor does it return false with
// note: a seriously malformed URL.
// note: Besides function name, is essentially the same as parseUri as well as our allowing
// note: an extra slash after the scheme/protocol (to allow file:/// as in PHP)
// example 1: parse_url('http://username:password@hostname/path?arg=value#anchor');
// returns 1: {scheme: 'http', host: 'hostname', user: 'username', pass: 'password', path: '/path', query: 'arg=value', fragment: 'anchor'}
var query, key = ['source', 'scheme', 'authority', 'userInfo', 'user', 'pass', 'host', 'port',
'relative', 'path', 'directory', 'file', 'query', 'fragment'
],
ini = (this.php_js && this.php_js.ini) || {},
mode = (ini['phpjs.parse_url.mode'] &&
ini['phpjs.parse_url.mode'].local_value) || 'php',
parser = {
php: /^(?:([^:\/?#]+):)?(?:\/\/()(?:(?:()(?:([^:@]*):?([^:@]*))?@)?([^:\/?#]*)(?::(\d*))?))?()(?:(()(?:(?:[^?#\/]*\/)*)()(?:[^?#]*))(?:\?([^#]*))?(?:#(.*))?)/,
strict: /^(?:([^:\/?#]+):)?(?:\/\/((?:(([^:@]*):?([^:@]*))?@)?([^:\/?#]*)(?::(\d*))?))?((((?:[^?#\/]*\/)*)([^?#]*))(?:\?([^#]*))?(?:#(.*))?)/,
loose: /^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/\/?)?((?:(([^:@]*):?([^:@]*))?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/ // Added one optional slash to post-scheme to catch file:/// (should restrict this)
};
var m = parser[mode].exec(str),
uri = {},
i = 14;
while (i--) {
if (m[i]) {
uri[key[i]] = m[i];
}
}
if (component) {
return uri[component.replace('PHP_URL_', '')
.toLowerCase()];
}
if (mode !== 'php') {
var name = (ini['phpjs.parse_url.queryKey'] &&
ini['phpjs.parse_url.queryKey'].local_value) || 'queryKey';
parser = /(?:^|&)([^&=]*)=?([^&]*)/g;
uri[name] = {};
query = uri[key[12]] || '';
query.replace(parser, function($0, $1, $2) {
if ($1) {
uri[name][$1] = $2;
}
});
}
delete uri.source;
return uri;
}
Source: Stackoverflow.com