Combine two URLSearchParams()

Question

Quick question:

Is it possible to combine two instances of URLSearchParams?

const params1 = new URLSearchParams();
const params2 = new URLSearchParams();

const finalParms = mergeThis(params1, params2) <- do this?

This question has been answered for angular but in plain JavaScript URLSearchParams has no member called .appendAll()

Thanks!

Answer 1

There's no built-in method to do that, but you can simply loop over the entries and append them:

const params1 = new URLSearchParams("?foo=foo&bar=bar");
const params2 = new URLSearchParams("?baz=baz&nii=nii");
for (let [key, val] of params2.entries()) {
  params1.append(key, val);
}
console.log(params1.toString());