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AngularJS timer cannot be stopped
- 黄舟Original
- 2017-02-18 13:46:121131browse
1. Problem background
After setting the timer in AngularJS, click the button again to trigger the timer. At this time, it will appear: the previous timer has not stopped, and the next timer has not stopped. The timer is started again, resulting in multiple timers running at the same time.
##2. Problem source code
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>AngularJS之定时器无法停止</title>
<script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>
<script>
var app = angular.module("btnApp",[]);
app.controller("btnCon",function($scope,$interval){
$scope.count = 0;
$scope.getDayTime = function(){
var date = new Date();
var year = date.getFullYear();
var month = date.getMonth()+1;
var day = date.getDate();
var hour = date.getHours();
var minute = date.getMinutes();
var second = date.getSeconds();
var thisTime = year+"-"+(month<10?"0"+month:month)+"-"+(day<10?"0"+day:day)+" "+(hour<10?"0"+hour:hour)+":"+(minute<10?"0"+minute:minute)+":"+(second<10?"0"+second:second);
return thisTime;
};
$scope.dayTime = $scope.getDayTime();
$scope.queryData = function(){
var timer = $interval(function(){
$scope.count++;
console.log($scope.count);
},4000);
$scope.$on("destroy",function(){
$interval.cancel($scope.timer);
});
};
});
</script>
</head>
<body ng-app="btnApp">
<p ng-controller="btnCon">
<button ng-click="queryData();">查询</button>
<p>
<label>{{count}}</label>
</p>
</p>
</body>
</html>
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