Is there any way to speed up this solution for a case-insensitive jQuery :contains selector?

Question

I found this solution for a case-insensitive jQuery :contains selector on StackOverflow. It works great, however it comes at the cost of performance. Does anyone el

Answer 1

You could try to check the selector only once, after the user has stopped typing for a specified amount of time, not for every keystroke.

For example, a simple implementation:

Usage:

$("#textboxId").keyup(function () {
  typewatch(function () {
    // executed only 500 ms after the user stopped typing.
  }, 500);

Implementation:

var typewatch = function(){
    var timer = 0;  // store the timer id
    return function(callback, ms){
        clearTimeout (timer);  // if the function is called before the timeout
        timer = setTimeout(callback, ms); // clear the timer and start it over
    }  
}();