<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>ng-app指令</title>
<style>
.red {
background-color: red;
}
.green {
background-color: green;
}
#box {
height: 200px;
width: 200px;
transition: background-color 1s ease;
}
</style>
</head>
<!-- 需要angular的代碼必須包裹在ng-app的代碼中 -->
<!-- ng-bind遇到html的時候會轉義 爲了安全 -->
<body ng-app>
<select ng-model="style">
<option value="red">紅色</option>
<option value="green">綠色</option>
</select>
<div id="box" ng-class="style"></div>
<script src="./js/Angular.js"></script>
<!-- 隔行換色 -->
<script>
</script>
</body>
</html>
運行結果
