App下載
實例代碼( Tip: 登錄后體驗更佳 )
<!DOCTYPE html>
<html>
<meta charset="utf-8">
<title>编程狮(w3cschool.cn)</title>
    <script src="https://7npmedia.w3cschool.cn/w3.js"></script>
<body>
    <p>单击该按钮可隐藏此文档中的所有元素.</p>
    
    <button onclick="w3.hide('*')">隐藏</button>
    
    <h2>这是一个标题</h2>
    
    <p>这是一个段落.</p>
    <p>这是另一个段落.</p>
</body>
</html>
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運行結果