In the past, when I went for an interview, the interviewer asked me to write a rotation chart directly. It was just coming out, so js is not powerful, so I can't write directly. If I want to get a high salary js, I still need to be able to learn. Now I use setInterval timer to develop a native rotation chart;
The code is as follows:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style type="text/css">
*{margin:0;padding: 0;}
#main{width:490px;margin:100px auto;}
#main img{width:100%;height:300px}
#main li{list-style: none;float: left;width:47px;border:1px solid orange;text-align: center;
padding:6px;
}
.orange{background-color: orange}
</style>
</head>
<body>
<div id="main">
<img src="img/1.jpg">
<ul>
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
<li>6</li>
<li>7</li>
<li>8</li>
</ul>
</div>
<script type="text/javascript">
var oDiv = document.getElementsByTagName("img")[0];
var oLi = document.getElementsByTagName("li");
var count =1;
var timer = setInterval(function () {
oDiv.src = "img/"+count+".jpg";
for ( var i=0;i<oLi.length;i++ ){
oLi[i].className = '';
}
oLi[count-1].className = "orange";
count++;
if (count>8){
count=1;
}
},1000)
</script>
</body>
</html>Example:
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