ng风格的背景颜色不起作用

Question

嗨朋友们，我是angularjs.i的初学者，如果从控制器那里向ng-style显示背景颜色

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var app = angular.module("myApp", []).controller("myCtrl", function($scope) {
  $scope.color = 'yellow';
  $scope.zoom = 2;
});

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<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>

<div ng-app="myApp" ng-controller="myCtrl" ng-style="{'background-color': color }">
</div>

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Answer 1

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var app = angular.module("myApp", []).controller("myCtrl", function($scope) {
  $scope.color = 'yellow';
  $scope.zoom = 2;
});

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<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>

<div ng-app="myApp" ng-controller="myCtrl" ng-style="{'background-color': color }">
welcome
</div>

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