简单教程
提交运行
代码编辑器：
<p>单击按钮将段落中所有“Microsoft”替换成“Twle”：</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","Twle"); document.getElementById("demo").innerHTML=n; } </script>
运行结果：