Ringo替换Paul

<!DOCTYPE html>

<html>

<head>

    <meta charset="utf-8">

    <title>Paul,Ringo</title>

    <link rel="stylesheet" type="text/css" href="">

</head>

<body>

    <p>Replace the first "Paul" and the last "Paul" with "Ringo" in the paragraph below:</p>

    <button onclick="myFunction()">Try it</button>

    <p id="demo1">Paul, Paula, Pauline, paul, Paul </p>

<script>

    function myFunction(){

    var str1 = document.getElementById("demo1").innerHTML;

       var txt1 = str1.replace(/Paul,/g,"Ringo,");

       var txt2 = txt1.replace(/, Paul /g,", Ringo ");

       var txt3 = txt2;

       document.getElementById("demo1").innerHTML = txt3;

    }

</script>

</body>

</html>

效果如图：

Ringo替换Paul

相关文章