Problems encountered when clearing timers in AngualrJs

This article mainly introduces the pitfalls encountered by AngualrJs clearing timer. Friends in need can refer to

angualrJs clearing timer climbing pitfalls:

I found 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 performance of the system.

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 here, because I use the native setTimeout() and setInterval() functions in javascript, so when clearing The corresponding are clearTimeout() and clearInterval(), the angular timer is $timeOut and $interval, so the clear corresponding is $timeOut.cancel() and $interval.cancel(),

must correspond one to one. Inconsistencies will not be cleared.

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