jquery实现左右轮播切换效果

时间:2020-05-16 spfLinux 人气:0

本文实例为大家分享了jquery实现左右轮播切换效果展示的具体代码，供大家参考，具体内容如下

html:

<!DOCTYPE html> 
<html lang="en"> 
<head> 
 <meta charset="UTF-8"> 
 <title>Document</title> 
 <link rel="stylesheet" href="css/banner.css" rel="external nofollow" > 
</head> 
<body> 
 <div id="banner"> 
  <!-- 图片区域 --> 
  <ul class="banner-img" 
   data-load="bannerImgs"> 
   <!-- 
   <li> 
    <a href="${product-details.html?lid=28}" rel="external nofollow" > 
    <img src="${img/index/banner1.png}"> 
    </a> 
   </li> 
   --> 
   <li style="left:50%;"> 
   <img src="img/index/banner1.png"> 
   </li> 
  </ul> 
  <!--左右方向按钮--> 
  <a href="javascript:;" class="ck-slide ck-left" data-move="left"></a> 
  <a href="javascript:;" class="ck-slide ck-right" data-move="right"></a> 
  <!--导航小圆点--> 
  <ul class="indicators" data-load="bannerInds"> 
  <!-- <li></li> --> 
  </ul> 
 </div> 
 
 <script src="js/jquery.min.js"></script> 
 <script src="js/banner.js"></script> 
</body> 
</html>

css：

/*banner部分*/ 
#banner{ 
 width:960px; 
 height:384px; 
 overflow:hidden; 
 position:relative; 
} 
#banner ul.banner-img{ 
 position:absolute; left:0; 
} 
#banner ul.banner-img>li{float:left;width:960px;} 
#banner ul.banner-img img{ 
 width:960px; 
 height:384px; 
} 
#banner a.ck-slide{ 
 position:absolute; 
 top:150px; 
 width:35px; 
 height:70px; 
 border-radius:3px; 
 background:#000; 
 opacity:0.15; 
 transition:all .3s linear; 
} 
#banner a.ck-left{ 
 left:40px; 
 background: #000 url(../img/index/arrow-left.png) no-repeat center center; 
} 
#banner a.ck-right{ 
 right:0px; 
 background:#000 url(../img/index/arrow-right.png) no-repeat center center; 
} 
#banner a.ck-slide:hover{ 
 opacity:0.3; 
} 
#banner ul.indicators{ 
 position:absolute; 
 bottom:10px; 
 left:50%; 
 margin-left:-34px; 
 list-style: none; 
} 
#banner ul.indicators li{ 
 width:12px; 
 height:12px; 
 background:#fff; 
 border-radius:50%; 
 float:left; 
 margin-right:5px; 
 transition:all .2s linear; 
} 
#banner ul.indicators li:hover,#banner ul.indicators li.hover{ 
 cursor:pointer; 
 background-color:#0AA1ED; 
}

js：

$(()=>{ 
 $.ajax({ 
  type:"get", 
  url:"php/xz.php", 
  dataType:"json" 
 }).then(data=>{ 
  console.log(data); 
  var html=""; 
  const LIWIDTH=960; 
  for(var item of data){ 
   html+=`<li> 
    <a href="${item.href}" rel="external nofollow" title="${item.title}"> 
    <img src="${item.img}"> 
    </a> 
   </li>`; 
  } 
  html+=`<li> 
    <a href="${data[0].href}" rel="external nofollow" title="${data[0].title}"> 
    <img src="${data[0].img}"> 
    </a> 
   </li>`; 
  console.log(html); 
  var $ulImg=$(".banner-img"); 
  $ulImg.html(html).css("width",LIWIDTH*(data.length+1)); 
 
  var $ids=$(".indicators"); 
   
  $ids.html("<li></li>".repeat(data.length)).children().first().addClass("hover"); 
   
  const WAIT=2000,DURA=1000; 
  var moved=0,timer=null; 
  function move(dir=1){ 
   moved+=dir; 
   console.log("moved="+moved); 
 
   $ulImg.animate({ 
    left:-LIWIDTH*moved 
   },DURA,()=>{ 
    if(moved%data.length==0){ 
     moved=0; 
     $ulImg.css("left",0); 
    } 
    $ids.children(`li:eq(${moved})`).addClass("hover").siblings().removeClass("hover"); 
   }) 
  } 
 
  var timer=setInterval(move,WAIT); 
 
  $('#banner').hover( 
   ()=>{ //这个是什么？ 
    clearInterval(timer), 
    timer=null; 
   }, 
   ()=>{ 
    timer=setInterval(move,WAIT); 
   } 
  ); 
 
  $("[data-move=right]").click(()=>{ 
   //防止动画叠加 
   /*clearInterval(timer); 
   timer=null; 
   move(); 
   timer=setInterval(move,WAIT);*/ 
   if(!$ulImg.is(":animated")) 
    move(); 
  }); 
 
  $("[data-move=left]").click(()=>{ 
   if(!$ulImg.is(":animated")){ 
    if(moved==0){ 
     $ulImg.css("left",-LIWIDTH*data.length); 
     moved=data.length; 
    } 
    move(-1); 
   } 
  }); 
 
  $ids.on("mouseover","li",function(){ 
   var $li=$(this); 
   var i=$li.index(); 
   moved=i; 
   $ulImg.stop(true).animate({ 
    left:-LIWIDTH*moved 
   },DURA,()=>{ 
    $ids.children(":eq("+i+")") 
     .addClass("hover") 
     .siblings().removeClass("hover"); 
   }) 
  }); 
 }) 
})

php：

<?php 
 
 header("Content-type:application/json"); 
 require_once("init.php"); 
 
 $sql="SELECT img,title,href FROM xz_index_carousel"; 
 $result=mysqli_query($conn,$sql); 
 echo json_encode(mysqli_fetch_all($result,1)); 
?>

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