lovecoding
/
W0407


			
				
					
						
						
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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>
</head>

<body>
    <div>
        <h3>哈哈哈哈</h3>
        <h3>哈哈哈哈</h3>
        <h3>哈哈哈哈</h3>
        <div id="news">你好</div>
        <div class="hi">哈哈哈哈</div>
        <ul>
            <li>你好1</li>
            <li>你好2</li>
            <li>你好3</li>
            <li>你好4</li>
        </ul>
    </div>
    <script>
        // 获取id选择器
        console.log(document.getElementById("news"));
        // 通过标签名称获取
        console.log(document.getElementsByTagName("h3"))
        // 获取class选择器
        console.log(document.getElementsByClassName("hi"))
        // 通过css选择器获取
        console.log(document.querySelectorAll("ul li"))
        console.log(document.querySelector(".hi"))
    </script>
</body>

</html>