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源代码:
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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>素材8网教程(study.sucai8.cn)</title> </head> <body> <p>单击按钮将段落中的“blue”替换成“red”。</p> <p id="demo">Mr Blue has a blue house and a blue car.</p> <button onclick="myFunction()">点我</button> <script> function myFunction(){ var str=document.getElementById("demo").innerHTML; var n=str.replace(/blue/gi,"red"); document.getElementById("demo").innerHTML=n; } </script> </body> </html>
运行结果