Implementation example of JQuery image carousel effect

The following editor will bring you an example of using JQuery to achieve the image carousel effect (recommended). The editor thinks it is quite good, so I will share it with you now and give it as a reference for everyone. Let’s follow the editor and take a look.

[The effect is shown in the picture]

##[Brief description of the principle]

Here is a brief introduction to the entire process:

1, hide all pictures except the first one,

2, Get the alt information of the first picture and display it in the information bar, and add a click event

3, add click listeners to the 4 buttons, click the corresponding button, and use the fadeOut and fadeIn methods to display the picture

4, set setInterval, execute the switching function regularly

[Code Description]

filter(":visible"): Get all visible elements

unbind(): Remove the bound event from the matched element

siblings: Get an element set containing all unique sibling elements of each element in the matched element set

[Program source code]

First introduce the JS file:

　 <script src="bootstrap/js/jquery-1.11.2.min.js"></script>
    <script src="bootstrap/js/bootstrap.min.js"></script>
    <link href="bootstrap/css/bootstrap.min.css" rel="external nofollow" rel="stylesheet" type="text/css"/>

HTML part:

<p id="banner"> 
   <ul>
    <li class="on"><a href="">1</a></li>
    <li><a href="">2</a></li>
    <li><a href="">3</a></li>
    <li><a href="">4</a></li>
    <li><a href="">5</a></li>
    <li><a href="">6</a></li>
   </ul>
   <p id="banner_list">
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" target="_self"><img src="img/a1.jpg" width="280" height="160" /></a>
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" target="_self"><img src="img/a2.jpg" width="280" height="160" /></a>
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" target="_self"><img src="img/a3.jpg" width="280" height="160" /></a>
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" target="_self"><img src="img/a4.jpg" width="280" height="160" /></a>
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" target="_self"><img src="img/a5.jpg" width="280" height="160" /></a>
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" target="_self"><img src="img/a6.jpg" width="280" height="160" /></a>
   </p>
  </p>

CSS part:

<style type="text/css">
 #banner {position:relative; width:280px; height:160px; border:1px solid #666; overflow:hidden;}
 #banner ul { width:138px; height:18px;position:absolute;list-style-type:none;filter: Alpha(Opacity=80);opacity:0.8;z-index:1002;
    margin:0; padding:0; bottom:3px; right:5px; line-height: 18px; text-align: center;}
 #banner ul li { width: 18px; height: 18px; margin:0px 2px;float:left;display:block;color:#FFF;
　　　　　　　　　　 border:#e5eaff 1px solid;background:#6C6D6E;cursor:pointer} 
 #banner ul li.on { background:#900}
 #banner ul li a { color: white;}
 #banner ul li a:hover{text-decoration: none;}
 #banner_list a{position:absolute;} <!-- 让六张图片都可以重叠在一起-->
 #banner_list{position:absolute; right: 5px; bottom: 5px;}
 </style>

JS part:

<script type="text/javascript">
 var t = n =0, count;
 $(document).ready(function(){ 
  count=$("#banner_list a").length;
  $("#banner_list a:not(:first-child)").hide();
  $("#banner_info").html($("#banner_list a:first-child").find("img").attr(&#39;alt&#39;));
  $("#banner_info").click(function(){window.open($("#banner_list a:first-child").attr(&#39;href&#39;), "_blank")});
  $("#banner li").click(function() {
   var i = $(this).text() -1;//获取Li元素内的值，即1，2，3，4
   n = i;
   if (i >= count) return;
   $("#banner_info").html($("#banner_list a").eq(i).find("img").attr(&#39;alt&#39;));
   $("#banner_info").unbind().click(function(){window.open($("#banner_list a").eq(i).attr(&#39;href&#39;), "_blank")})
   $("#banner_list a").filter(":visible").fadeOut(500).parent().children().eq(i).fadeIn(1000);
   document.getElementById("banner").style.background="";
   $(this).toggleClass("on");
   $(this).siblings().removeAttr("class");
  });
  t = setInterval("showAuto()", 4000);
  $("#banner").hover(function(){clearInterval(t)}, function(){t = setInterval("showAuto()", 4000);});
 })
 
 function showAuto()
 {
  n = n >=(count -1) ?0 : ++n;
  $("#banner li").eq(n).trigger(&#39;click&#39;);
 }
 </script>

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