定义和用法
ng-style 指令为 HTML 元素添加 style 属性。
ng-style 属性值必须是对象，表达式返回的也是对象
例子
<body ng-app="myApp" ng-controller="myCtrl">
<h1 ng-style="myObj">stupider你好!</h1>
<script>
var app = angular.module("myApp", []);
app.controller("myCtrl", function($scope) {
$scope.myObj =
{
"color" : "white",
"background-color" : "coral",
"font-size" : "60px",
"padding" : "50px"
}
});
</script>
</body>