<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>test</title>
<script src="js/angular.js"></script>
<script type="application/javascript">
(function(angular) {
'use strict';
angular.module('myApp', [])
.controller('firstController', function firstController($scope,$timeout) {
$scope.firstNum = 1;
$scope.secondNum = 1;
$scope.doMySum = function(){
var fn = angular.isNumber($scope.firstNum)?$scope.firstNum:0;
var sn = angular.isNumber($scope.secondNum)?$scope.secondNum:0;
return fn+sn;
}
$timeout(function(){
$scope.firstNum = 10;
},2000);
$scope.$watch('doMySum()',function(newValue, oldValue){
if(newValue == 100){
alert('ok');
}
});
});
})(window.angular);
</script>
</head>
<body >
<div ng-app="myApp">
<div ng-controller="firstController">
<input type="number" name="firstNum" ng-model="firstNum" required/>
+<input type="number" name="secondNum" ng-model="secondNum" required/>
={{doMySum()}}
</div>
</div>
</body>
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