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防止事件冒泡和防止触发子元素

article 2024/11/7 23:52:35

以mouseover为例

1. 防止事件冒泡，触发父元素

可以使用mouseenter，或者添加 e.stopPropagation()

2. 防止子元素被触发

style里添加 pointer-events: none

比如:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <style>
        .parent {            
            background-color: red;
            width: 200px;
            height: 200px;
        }
       .child {
            background-color: yellow;
            width: 100px;
            height: 100px;
            margin: auto;
        }
    </style>
</head>
<body>
    <p>只触发父元素</p>
    <div class="parent" onmouseover="console.log('mouse over')">
        parent
        <div class="child" style="pointer-events: none;">
            child
        </div>
    </div>
    <p>只触发子元素</p>
    <div class="parent">
        parent
        <div class="child" onmouseenter="console.log('mouse over')">
            child
        </div>
    </div>
</body>
</html>

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