JavaScript - get url params that are encoded URIs

Question

How would I get the params in a URL that are encoded. Eg, in this URL, I want the 2 cf= and the 3 cat= values:

search.php?st=advanced&qall=&qany=&cat%5B%5D=13&cat%5B%5D=14&cat%5B%5D=11&cf%5B%5D=16&cf%5B%5D=22

I tried this and get null:

const queryString = window.location.search;
const urlParams = new URLSearchParams(queryString);
console.log(urlParams.get(`cat%5B%5D`)); // would like array [13,14,11]
console.log(urlParams.get(`cf%5B%5D`)); // would like array [16,22]

Answer 1

Just use the other method of URLSearchParams object - wich is getAll:

console.log(urlParams.getAll(`cat%5B%5D`)); // will give you an array

you will get exactly what you wanted.

[13,14,11]