我有一個簡單的示例代碼,由3個變量ab和testvar組成,testvar是a和b的總和,我試圖理解爲什麼綁定對變量testvar無效,已經創建了一個模型的輸入。如何可以做到這一點,任何幫助是極大的讚賞Angularjs綁定問題
<!DOCTYPE html>
<html>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
<input ng-model="mymodel.a"><br>
Why this value does ot change on changing input:{{ mymodel.testvar}}
<br>
mymodel.a changes on input change: {{mymodel.a}}
</div>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.mymodel={};
$scope.mymodel.a=1;
$scope.mymodel.b=2
$scope.mymodel.testvar =$scope.mymodel.a+$scope.mymodel.b;
});
</script>
<p>Test Binding.</p>
</body>
</html>
謝謝!簡潔的說明 – PortalGuy