Simple Rotating Effect Realized by Jquery [Examples]

2021-02-17 06:09:15
OfStack


<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <link rel="stylesheet" href="css/index.css">
  <script src="js/jquery-1.11.3.js"></script>
  <script src="js/baner.js"></script>
</head>
<body>
  <div class="main">
    <a href=""><img src="img/baner-1.jpg" alt=""></a>
    <a href=""><img src="img/baner-2.jpg" alt=""></a>
    <a href=""><img src="img/baner-3.jpg" alt=""></a>
    <a href=""><img src="img/baner-4.jpg" alt=""></a>
    <ul>
      <li>1</li>
      <li>2</li>
      <li>3</li>
      <li>4</li>
    </ul>
  </div>
</body>
</html>


/************* Initialize the ************/
*{margin:0;padding: 0;border: none;list-style: none}
/********* Rotate left and right center *************/
.main{
  width: 1024px;
  height: 320px;
  margin: 0 auto;
  position: relative;
}
.main a{
  position: absolute;
}
.main a img{
  width: 100%;
  height: 320px;

}
/*********** The little icon on the left ************/
.main ul li.selected{
  background: #f97157;
}
.main ul{
  position: absolute;
  z-index: 999;
  top: 120px;
  left: 20px;
}
.main ul li{
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #909090;
  cursor: pointer;
  text-align: center;
}


/**
 * Created by Administrator on 16-3-12.
 */
/*********** Define global variables and timers *************/
var t=null;

var n=0;/** Dynamic change **/
var count;
/************************/
$(function(){
  count=$(".main a").length;/* For dynamic change n The standby */
  /** Let is not the first in rotation 1 A hidden **/
  $(".main a:not(:first-child)").hide();
  /* Click on the current li The current li The corresponding picture is displayed */
  $(".main ul li").click(function(){
    var index=$(this).text()-1;
    n=index;
    console.log(n);
    /***** Let the currently displayed picture 0.5S Fade in and match down 1 A gradually show *****/
    $(".main a").filter(":visible").fadeOut(500).parent().children().eq(index).fadeIn(1000);
    /******* Focus, give to the present li Append class to change the background color *******/
    $(this).addClass("selected");
    /**** And remove the current li Class name of all siblings of selected , restore the background color *****/
    $(this).siblings().removeClass("selected");
  });
  /*** Defining timer 3 Seconds to perform 1 time ****/
  t=setInterval("autoMove()",3000);
  /**** The timer stops when the mouse is in and turns on when it is removed ****/
  $(".main").hover(function(){clearInterval(t)}, function(){t = setInterval("autoMove()", 3000);});
});
/*** Define the automatic rotation function ****/
function autoMove(){
  if(n>=(count-1)){
    n=0;
  }else{
   ++n;
  }
  /***** to li Execute the matching event *****/
  $(".main ul li").eq(n).trigger("click");
}