how can i stop setInterval

Question

how can i stop and start setInterval on focus and blur.....!! suppose i have a textarea i want to stop setInvterval on textarea focus and restart setInvterval on textarea blur with jquery

Answer 1

You have to store the timer id of the interval when you start it, you will use this value later to stop it, using the clearInterval function:

$(function () {
  var timerId = 0;

  $('textarea').focus(function () {
    timerId = setInterval(function () {
      // interval function body
    }, 1000);
  });

  $('textarea').blur(function () {
    clearInterval(timerId);
  });

});

Answer 2

Store the return of setInterval in a variable, and use it later to clear the interval.

var timer = null;
$("textarea").blur(function(){
    timer = window.setInterval(function(){ ... whatever ... }, 2000);
}).focus(function(){
    if(timer){
       window.clearInterval(timer);
       timer = null
    }
});

Answer 3

setInterval returns an id that you can use to cancel the interval with clearInterval()

Answer 4

I think remove window from window.clearInterval dien dan mua ban