angular27-ng-class颜色切换

    <!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的代码必须包裹在ng-app的代码中 -->
    <!-- ng-bind遇到html的时候会转义 为了安全 -->
     
    <body ng-app>
        <select ng-model="style">
          <option value="red">红色</option>
          <option value="green">绿色</option>
      </select>
        <div id="box" ng-class="style"></div>
        <script src="./js/Angular.js"></script>
        <!-- 隔行换色 -->
        <script>
        </script>
    </body>
     
    </html>

运行结果

 

posted @ 2022-07-13 18:29  前端导师歌谣  阅读(24)  评论(0)    收藏  举报