JavaScript简单的实现轮播图

我就是我 2023-01-16 11:29 77阅读 0赞

用JavaScript简单的实现轮播图：

1.鼠标不触碰图片时，图片以1.5秒的速度自动播放。

2.鼠标触碰图片时，自动轮播图片停止。

3.鼠标点击1-5时，通过下标跳转到对应的图片。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3F3cTE1MTgzNDY4NjQ_size_16_color_FFFFFF_t_70][]

<!DOCTYPE html>
    <html>
    <head lang="en">
    	<meta charset="UTF-8">
    <title>图片轮换</title>
    	<link rel="stylesheet" href="css/scroll.css">
    
    </head>
    
    <body>
    <div class="scroll" onmouseover="stop()" onmouseout="start()">
    	<div id="num">
    		<a href="#" >1</a>
    		<a href="#" >2</a>
    		<a href="#" >3</a>
    		<a href="#" >4</a>
    		<a href="#" >5</a>
    	</div>
    	<img src="img/1.gif" alt="图片" id="photo"/>
    	
    </div>
    <script type="text/javascript">
    		var imgs=["1.gif","2.gif","3.jpg","4.jpg","5.gif"];
    		var aList=document.getElementsByTagName("a");
    		
    		var index=0;
    		for (var i = 0; i < aList.length; i++) {
    			aList[i].onclick=function() {
    				index=this.innerText-1;
    				document.getElementById("photo").setAttribute("src","img/"+imgs[index]);
    			}
    		}	
    		function autoChange () {
    			index++;
    			if(index>=aList.length){
    				index=0;
    			}
    			var photo=document.getElementById("photo");
    			photo.setAttribute("src","img/"+imgs[index]);		
    		}		
    		var a;
    		function start () {
    			a=window.setInterval("autoChange()",1500);
    		}
    		function stop () {
    			window.clearInterval(a);
    		}
    		start();			
    	</script>
    </body>
    </html>

.scroll{width: 360px; height: 190px; overflow: hidden; margin: 0 auto; position: relative;}
    a{
        font-size: 14px;
        color: #39F;
        height: 18px;
        width: 20px;
        border: 1px solid #39F;
        text-decoration: none;
        display: block;
        float: left;
        margin-right:5px;
        text-align: center;
        background-color: #FFF;
        line-height: 20px;
    }
    a:hover {
        font-size: 14px;
        font-weight: bold;
        color: #FFF;
        background-color: #39F;
        border: 1px solid #39F;
        text-decoration: none;
        display: block;
    }
    #num {
        position:absolute;
        width:180px;
        height:25px;
        z-index:2;
        left:100px;
        top: 13px;
    }

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3F3cTE1MTgzNDY4NjQ_size_16_color_FFFFFF_t_70]: /images/20221022/8f82d9c1f8e84395866f298df42105a5.png