Home
JS
JS
Tryit: JAVASCRIPT
运行 ❯
×
Change Orientation
Change Theme, Dark/Light
<!DOCTYPE html> <html> <body> <h1>设置外部文本</h1> <p>设置外部文本时，整个元素都会被替换。</p> <p>单击按钮更改（和删除）h1 元素：</p> <button onclick="myFunction()">更改标题</button> <script> function myFunction() { var x = document.getElementsByTagName("h1")[0]; x.outerHTML = "Changed content!"; } </script> </body> </html>