首页 > 编程 > JavaScript > 正文

基于JQuery实现图片轮播效果(焦点图)

2019-11-20 10:38:07
字体:
来源:转载
供稿:网友

自己写了一个纯jq形式的横向轮播焦点图,可点击小圆点或者左右按钮进行切换,属于定宽类型。改成自适应宽度的也不难,将css里面的bannerCon宽度改为百分比,再在js里面将ul和li的宽度跟随父级容器的宽度变化即可,需要用到$(window).resize。

兼容到IE6+以上浏览器,有轮播速度和切换间隔两个参数可以改。

效果图如下:

Html代码如下:

<html><head> <meta charset="utf-8"> <title>banner图</title> <link href="css/style.css" rel="stylesheet"/> <script src="js/jquery-1.9.1.min.js"></script> <script src="js/common.js"></script></head><body> <div class="wrap"> <div class="banner">  <div class="bannerCon">  <ul class="imgList">   <li><a href="#"><img src="images/banner01.jpg" alt=""/></a></li>   <li><a href="#"><img src="images/banner02.jpg" alt=""/></a></li>   <li><a href="#"><img src="images/banner03.jpg" alt=""/></a></li>  </ul>  <ul class="btnList clearfix">   <li class="cur"><span></span></li>   <li><span></span></li>   <li><span></span></li>  </ul>  <span class="pre-nex prev"><</span>   <span class="pre-nex next">></span>   </div> </div> </div></body></html>

Css样式如下:

@charset "utf-8";/* 简单reset */body, p, ul, ol, li { margin: 0; padding: 0;}ul, ol { list-style: none;}img { border:none; }a,button{ outline: none; }.clearfix:after { visibility: hidden; display: block; font-size: 0; content: " "; clear: both; height: 0;} /* 具体样式 */.banner { position: relative; height: 400px; overflow: hidden;}.banner .bannerCon { position: absolute; top: 0; left: 50%; width: 800px; height: 400px; margin-left: -400px; overflow: hidden;}.bannerCon .imgList { position: absolute; top: 0; left: 0; width: 99999px; height: 400px;}.bannerCon .imgList li { float: left; width: 800px; height: 400px;}.bannerCon .imgList li a { position: relative; display: block; height: 100%;}.bannerCon .imgList li img { width: 800px; height: 400px;}.bannerCon .pre-nex { display: none; position: absolute; top: 50%; width: 40px; height: 60px; margin-top: -40px; font: bold 40px/60px Simsun; color: #ccc; text-align: center; border:none; background: rgba(0,0,0,.30); filter:progid:DXImageTransform.Microsoft.Gradient(startColorStr=#4c000000, endColorStr=#4c000000); cursor: pointer; z-index: 3;}.bannerCon .pre-nex.show { display: inline-block; }.bannerCon .prev { left: 13%; }.bannerCon .next { right: 13%; }.bannerCon .btnList { position: absolute; left: 0; bottom: 20px; width: 100%; height: 12px; text-align:center; z-index: 2; _overflow: hidden;}.bannerCon .btnList li { display: inline; }.bannerCon .btnList li span { display: inline-block; width: 12px; height: 12px; margin: 0 5px; border-radius: 6px; background-color:#14829e; cursor: pointer;}.bannerCon .btnList li.cur span { background-color: #f30; }

Js代码如下:

//加载在文本读取之后的js语句 开始 ============================================================= function Scroll(obj,speed,interval){ //父级容器,轮播速度,切换间隔  $("."+obj).each(function(){   var $box = $(this),   $imgUl = $box.children(".imgList"),   $imgLi = $imgUl.children("li"),   $btnUl = $box.children(".btnList"),   $btnLi = $btnUl.children("li"),   $btnPreNex = $box.children(".pre-nex"),   $btnPre = $box.children(".prev"),   $btnNex = $box.children(".next"),   n = $imgLi.length,   width = $imgLi.width(),   left = parseFloat($imgUl.css("left")),   k = 0,   Player;   $imgUl.css("width",n*width);   function scroll(){    //轮播事件    $imgUl.stop().animate({left:-width},speed,function(){     k += 1;     $imgUl.css("left",0);     $imgUl.children("li:first").appendTo($(this));     $btnLi.removeClass('cur');     if(k >= n){      k = 0;     }     $btnUl.children("li").eq(k).addClass('cur');       });   }   $btnLi.click(function(){   //小圆点点击事件    var index = $btnLi.index(this);     $(this).addClass('cur').siblings("li").removeClass('cur');    if(index >= k){     var dif = index-k;     left = -dif*width;     $imgUl.stop().animate({left:left},speed,function(){      $imgUl.css("left",0);      $imgUl.children("li:lt("+dif+")").appendTo($imgUl);      });    }    else{     var j = n-(k-index);     $imgUl.css("left",(index-k)*width);     $imgUl.children("li:lt("+j+")").appendTo($imgUl);     $imgUl.stop().animate({left:0},speed);     }    k = index;   });    $btnPreNex.click(function(){  //左右按钮点击事件    var index = $btnLi.index(this);      if($(this).hasClass('next')){     if(!$imgUl.is(":animated")){      k += 1;      $imgUl.animate({left:-width},speed,function(){       $imgUl.css("left",0);       $imgUl.children("li:first").appendTo($(this));       if(k >= n){        k = 0;       }       $btnUl.children("li").removeClass('cur').eq(k).addClass('cur');      });     }    }    else {     if(!$imgUl.is(":animated")){      k += -1;      $imgUl.css("left",-width);      $imgUl.children("li:last").prependTo($imgUl);      $imgUl.stop().animate({left:0},speed);      if(k < 0){       k = n-1;      }      $btnUl.children("li").removeClass('cur').eq(k).addClass('cur');     }    }   });     $box.hover(      //鼠标移入、移出事件    function(){     clearInterval(Player);     $btnPreNex.addClass('show');    },    function(){     Player = setInterval(function(){scroll()},interval);     $btnPreNex.removeClass('show');    }    );   Player = setInterval(function(){scroll()},interval);  }); }  $(function () {       //读取轮播事件  Scroll("bannerCon",600,4000); });  

注意加载一下jq库,我用的是1.9.1的,其实1.7+的都没问题的。

更多精彩内容大家还可以参考《jQuery焦点图特效汇总》进行学习,希望大家喜欢。

以上就是本文的全部内容,希望能够帮助大家。

发表评论 共有条评论
用户名: 密码:
验证码: 匿名发表