<input type="text" name="name" ng-model="inputname" ng-init="inputname='hello'">
<span>{{inputname}}</span>
<button type="button" name="button" ng-click="change()">改变值</button>
$scope.change=function(){
$scope.inputname="world";
}
$scope.$watch("$scope.inputname",function(newValue,oldValue){
console.log(newValue);
console.log(oldValue);
console.log($scope.inputname);
})
![[Web front-end] Permulaan pantas Node.js](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
$watchKaedah yang salah