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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 id="box" class="div1">hello</div>
- <div class="div1">world</div>
- <script>
- // 新增选择器 querySelector 获取单个元素 ID 以#开头 class 以.开头
- // var oBox = document.querySelector(".div1");
- // console.log(oBox);
- // querySelectorAll 可以获取多个元素
- var aDiv = document.querySelectorAll(".div1");
- console.log(aDiv);
- </script>
- </body>
- </html>
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