专注前端素材！
源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>素材8网教程(study.sucai8.cn)</title> </head> <body> <p>单击按钮将段落中所有“Microsoft”替换成“Runoob”：</p> <p id="demo">Visit Microsoft!Visit Microsoft!Visit Microsoft!</p> <button onclick="myFunction()">点我</button> <script> String.prototype.replaceAll = function(search, replacement) { var target = this; return target.replace(new RegExp(search, 'g'), replacement); }; function myFunction() { var str=document.getElementById("demo").innerHTML; var n=str.replaceAll("Microsoft","Runoob"); document.getElementById("demo").innerHTML=n; } </script> </body> </html>
运行结果