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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>
- <h1>hello</h1>
- <h1>world</h1>
- <script>
- var oH1 = document.getElementsByTagName("h1");
- oH1[0].onclick = function(){
- // console.log("hello world")
- // oH1[0].innerText = "你好";
- this.innerText = "hello world"
- }
- </script>
- </body>
- </html>
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