angularjs清楚定时器

在AngularJS中清除定时器可以使用$interval服务的cancel方法。首先，你需要在控制器中创建一个定时器，并将返回的promise保存在一个变量中，例如：

var timer = $interval(function(){
  // 定时执行的代码
}, 1000);

然后，在控制器的$destroy事件中调用$interval的cancel方法来清除定时器，例如：

$scope.$on("$destroy", function() {
  $interval.cancel(timer);
});

这样，在控制器被销毁时，定时器就会被清除，避免了不必要的错误和资源浪费。\[2\]
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