javascript - About the problem of js calling local image path?

I saw a video on the Internet and made a picture switch by modifying Lu Jin, and then I tried to write it myself. var arr=["./images/1.jpg","./images/2.jpg","./images/3.jpg","./images/4.jpg"];

        two.onclick=function () {
           number++ ;
           img.src=arr[number];
           alert( img.src);
        }

But through the alert, I saw that Lu Jin is a long string of characters

Is there any way to solve it?
Re-correct the code, <!DOCTYPE html>
<html lang="en">
<head>

<meta charset="UTF-8">
<title>Title</title>
<style>
    .ai{float:left;margin-left: 140px;}
  .all{width:420px;position: relative;margin: 0 auto;}
   .box{padding:10px;position: relative;width:400px; height:400px;overflow: hidden;}
   .box img{width: 400px; height:400px;}
    .all input{float: left;margin-left:10px;display: inline;}
    .one{ text-decoration:none;font-size:40px;line-height: 80px;background-color: #004B97;color: whitesmoke;
        opacity:0.5;  -moz-opacity:0.5;  filter:alpha(opacity=50);position: absolute;left: 10px;top:160px;}
    .two{ text-decoration:none;font-size:40px;line-height: 80px;background-color: #004B97;color: whitesmoke;
        opacity:0.5;  -moz-opacity:0.5;  filter:alpha(opacity=50);position: absolute;right: 10px;top:160px;}
</style>
<script>
    window.onload=function () {
        var box=document.getElementById("box");
        var one=document.getElementById("one");
        var two=document.getElementById("two");
        var img=document.getElementById("img");
        var number=0;
        var arr=["./images/1.jpg","./images/2.jpg","./images/3.jpg","./images/4.jpg"];
        **two.onclick=function () {
           number++ ;
           img.src=arr[number];
          alert( img.src);**
        }**
    }**加粗文字**
</script>

</head>
<body>
<p class="all" id="all">

<p class="ai">

</p>

<img  id="img" src="./images/1.jpg">
<a class="one" id="one" href=""><</a>
<a  class="two" id="two" href="">></a>

</p>

</p>

</body>
</html>
Lu Jin modified it, but it still didn’t work. The one in bold is the code for switching pictures. Please kindly correct me.

PHPz2768 days ago842

javascript - About the problem of js calling local image path?

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