<!DOCTYPE html> <html> <body> <h1>设置 outerText</h1> <p>设置 outerText 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()">修改标题</button> <script> function myFunction() { var x = document.getElementsByTagName("h1")[0]; x.outerHTML = "Changed content!"; } </script> </body> </html>