Appends a specified key/value pair as a new search parameter.

let searchParams = new URLSearchParams();
searchParams.append('name', 'first');
searchParams.append('name', 'second');

Deletes the given search parameter and its associated value, from the list of all search parameters.

let searchParams = new URLSearchParams([['name', 'value']]);
searchParams.delete('name');

Returns an iterator allowing to go through all key/value pairs contained in this object.

const params = new URLSearchParams([["a", "b"], ["c", "d"]]);
for (const [key, value] of params.entries()) {
  console.log(key, value);
}

Calls a function for each element contained in this object in place and return undefined. Optionally accepts an object to use as this when executing callback as second argument.

const params = new URLSearchParams([["a", "b"], ["c", "d"]]);
params.forEach((value, key, parent) => {
  console.log(value, key, parent);
});

Returns the first value associated to the given search parameter.

searchParams.get('name');

Returns all the values associated with a given search parameter as an array.

searchParams.getAll('name');

Returns a Boolean that indicates whether a parameter with the specified name exists.

searchParams.has('name');

Returns an iterator allowing to go through all keys contained in this object.

const params = new URLSearchParams([["a", "b"], ["c", "d"]]);
for (const key of params.keys()) {
  console.log(key);
}

Sets the value associated with a given search parameter to the given value. If there were several matching values, this method deletes the others. If the search parameter doesn't exist, this method creates it.

searchParams.set('name', 'value');

Sort all key/value pairs contained in this object in place and return undefined. The sort order is according to Unicode code points of the keys.

searchParams.sort();

Returns a query string suitable for use in a URL.

searchParams.toString();

Returns an iterator allowing to go through all values contained in this object.

const params = new URLSearchParams([["a", "b"], ["c", "d"]]);
for (const value of params.values()) {
  console.log(value);
}

Returns an iterator allowing to go through all key/value pairs contained in this object.

const params = new URLSearchParams([["a", "b"], ["c", "d"]]);
for (const [key, value] of params) {
  console.log(key, value);
}