new URLSearchParams() code example

Example 1: URLSearchParams(new URL(url).search)

// Retrieve params via url.search, passed into ctor
var url = new URL('https://example.com?foo=1&bar=2');
var params = new URLSearchParams(url.search);

// Pass in a string literal
var params2 = new URLSearchParams("foo=1&bar=2");
var params2a = new URLSearchParams("?foo=1&bar=2");

// Pass in a sequence of pairs
var params3 = new URLSearchParams([["foo", "1"], ["bar", "2"]]);

// Pass in a record
var params4 = new URLSearchParams({"foo": "1", "bar": "2"});

Example 2: generate query string from urlsearchparams

URLSearchParams.toString()

Example 3: typescript read url search params

const product = urlParams.get('product')
console.log(product);
// shirt

const color = urlParams.get('color')
console.log(color);
// blue

const newUser = urlParams.get('newuser')
console.log(newUser);
// empty string