machinecat520
/
zj-Exercise


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script>

        window.onload = function(){
            //分别为两个按钮绑定单击响应函数
            var btn01 = document.getElementById('btn01');
            var btn02 = document.getElementById('btn02');
            btn01.onclick = function(){
                alert(1);
            };
            btn02.onclick = function(){
                alert(2);
            };
            //设置btn01对鼠标按下相关的事件进行捕获
            /**
             * 当调用一个元素的setCapture()方法以后，这个元素将会把下一次
             *  所有的鼠标按下相关的事件捕获到自身上
             * 
             */
            btn01.setCapture();
        };

    </script>
</head>
<body>
    <button id="btn01">按钮01</button>
    <button id="btn02">按钮02</button>
</body>
</html>