Grab query string value from URL using Javascript

Question

I want to visit https://example.com/?GCLID=test123 and store whatever is in GCLID in a variable.

How do I do this? The following keeps returning null

var url = window.location.href;

// test
url = "https://example.com/?GCLID=test123";

const params = new URLSearchParams(url);
var gclid = params.get('GCLID');

alert(params);
alert(gclid);

You may have to search only the query portion of the URL: developer.mozilla.org/en-US/docs/Web/API/URLSearchParams — Jay Buckman
– Jay Buckman, Commented Jan 19, 2021 at 14:48

mss · Accepted Answer · 2021-01-19 14:49:26Z

1

You have to take the part after '?' in new URLSearchParams, see below example for same, i.e you will pass window.location.search like this

const params = new URLSearchParams(window.location.search);

var url = window.location.href;

// test
url = "https://example.com/?GCLID=test123";

const params = new URLSearchParams(url.split('?')[1]);
var gclid = params.get('GCLID');

alert(params);
alert(gclid);

answered Jan 19, 2021 at 14:49

mss

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