1、問題背景
AngularJS設定計時器後，再次點擊按鈕觸發定時器，這時會出現：前一個計時器未停止，後一個計時器又啟動了，導致多個計時器同時在運行。
2、問題源碼
<!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>
4、解源碼
5、解決結果
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