Alert when changing the field values in a suitelet page

An alert of leaving site is shown when the filters of a suitelet page is chnaged as below.

To remove this alert, before relocating to the new page with data filtered using the filters in the suitelet page, write the below code.

var tempStorage = window.onbeforeunload;
window.onbeforeunload = function () { };

After the relocating assign the tempStorage to the window.onbeforeunload

window.onbeforeunload = tempStorage;