AJAX: Delay for search on typing in form field [duplicate]

Answer 1

Simply setup the delayed invocation with setTimeout(), then remove it again on every event with clearTimeout()

HTML

Javascript

var timeout = null;

function doDelayedSearch(val) {
  if (timeout) {  
    clearTimeout(timeout);
  }
  timeout = setTimeout(function() {
     doSearch(val); //this is your existing function
  }, 2000);
}