How to check if a query string value is present via JavaScript?

Question

How can I check if the query string contains a q= in it using JavaScript or jQuery?

Answer 1

this function help you to get parameter from URL in JS

function getQuery(q) {
    return (window.location.search.match(new RegExp('[?&]' + q + '=([^&]+)')) || [, null])[1];
}