Note: This feature is available in Web Workers.
The keys() method of the URLSearchParams interface returns an iterator allowing iteration through all keys contained in this object. The keys are strings.
keys()None.
Returns an iterator.
// Create a test URLSearchParams object
const searchParams = new URLSearchParams("key1=value1&key2=value2");
// Display the keys
for (const key of searchParams.keys()) {
console.log(key);
}The result is:
key1 key2
URL interface.