lovecoding
/
W250913


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        #box {
            width: 400px;
            height: 400px;
            background: #00f;
        }
        #box1 {
            width: 200px;
            height: 200px;
            background: #f00;
        }
    </style>
</head>
<body>
    <div id="box">
        <div id="box1"></div>
    </div>
    <script>
        // 事件冒泡
        // 事件：冒泡 目标 捕获
        let box = document.getElementById("box");
        let box1 = document.getElementById("box1");
        // box.onClick
        box.addEventListener("click",function() {
            console.log("1")
        },true)
        box1.addEventListener("click",function() {
            console.log("2")
        },true)
    </script>
</body>
</html>