Query String in JavaScript

Question

By using document.referrer we will get all the reference of URL in JavaScript, such as the following:

http://localhost/testwordpress/wp-admin/a         


        

Answer 1

To get the query string from document.referrer, you can use the split() method:

var qs = document.referrer.split('?')[1];

if (typeof qs !== 'undefined') {
    // qs contains the query string.
    // this would be "page=thesis-options&upgraded=true" in your case.
}
else {
    // there was no query string in document.referrer.
}