Ringo替换Paul

Posted 2021-01-15 djosimon

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<!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：

技术分享图片

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把Paul Pauline pual Paula Paul中的Paul替换成Ringo