替换

<!DOCTYPE html>
<html>
<head lang="en">
  <meta charset="UTF-8">
  <title>RegExp</title>
</head>
<body>

<script>
var reg=new RegExp("Paul","g"); 
var stringObj="Paul Paula paul sPaul Paul";
var newstr=stringObj.replace(reg,"Ringo");
alert(newstr);
</script>

</body>
</html>

结果

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原文地址：https://www.cnblogs.com/xbsai/p/9892577.html