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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 class="box">hello</div>
- <div id="div1">world</div>
- <span>你好</span>
- <script>
- // var oBox = document.getElementsByClassName("box");
- // oBox[0].innerText = "你好"
- var oBox = document.querySelector(".box");
- var div1 = document.querySelector("#div1");
- var oSpan = document.querySelector("span");
- // var oDiv = document.querySelector("div");
- var aDiv = document.querySelectorAll("div");
- // console.log(oBox,div1,oSpan);
- // console.log(oDiv);
- // console.log(aDiv[1]);
- </script>
- </body>
- </html>
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