Using timers with AngualrJs

This time I will bring you the use of timers with AngualrJs, what are the precautions for using timers with AngualrJs, the following is a practical case, let’s take a look .

angualrJs clear timer climbing pit road:

I discovered a strange problem today. The timer placed in the custom instruction is still executing on another page after the page jumps. This is definitely not possible and will affect the system. performance. I used the native method window.

onunload

in Angular but it didn’t work, so I had to use Angular’s ​​own method $destroy. This page jumps and the DOM structure changes, the timer can be cleared

      var timer = setInterval(function(){
          $scope.$apply(function(){
            //这里是想要定时刷新的逻辑
          });
        },3000);
        $scope.$on('$destroy',function(){
          if (timer) {
            clearInterval(timer);
            timer = null;
          }
        });

Let me talk about it here, because I am using the

setTimeout()

and setInterval() functions native to javascript, so the corresponding They are clearTimeout() and clearInterval(), and the angular timer is $timeOut and $interval, so the clear corresponding is $timeOut.cancel()and$interval.cancel(), There must be a one-to-one correspondence, and inconsistencies will not be cleared.

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

Recommended reading:

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