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  • JQuery图片滑动插件

    效果预览:

    (暂无)

    html代码:

     1 <div id="focus">
     2                 <ul>
     3                     <li>
     4                         <a href="#"><img src="images/index2013/jdt.gif" /> </a>
     5                     </li>
     6                     <li>
     7                         <a href="#"><img src="images/index2013/jdt.gif" /> </a>
     8                     </li>
     9                     <li>
    10                         <a href="#"><img src="images/index2013/jdt.gif" /> </a>
    11                     </li>
    12                 </ul>
    13             </div>

    js代码:

     1 <script type="text/javascript"
     2             src="http://lib.sinaapp.com/js/jquery/1.6/jquery.js "></script>
     3         <script type="text/javascript">
     4     $(document).ready(function() {
     5         slide();
     6     });
     7     function slide() {
     8         var focusDivName = "#focus";//焦点图所在div的id
     9         var sWidth = $(focusDivName).width(); // 获取焦点图的宽度(显示面积)
    10         var len = $(focusDivName + " ul li").length; // 获取焦点图个数
    11         var index = 0;
    12         var picTimer;
    13 
    14         // 以下代码添加数字按钮和按钮后的半透明条,还有上一页、下一页两个按钮
    15         var btn = "<div class='btnBg'></div><div class='btn'>";
    16         for ( var i = 0; i < len; i++) {
    17             btn += "<span></span>";
    18         }
    19         btn += "</div><div class='preNext pre'></div><div class='preNext next'></div>";
    20         $(focusDivName).append(btn);
    21         $(focusDivName + " .btnBg").css("opacity", 0.0);
    22 
    23         // 为小按钮添加鼠标滑入事件,以显示相应的内容
    24         $(focusDivName + " .btn span").css("opacity", 0.4).mouseover(
    25                 function() {
    26                     index = $(focusDivName + " .btn span").index(this);
    27                     showPics(index);
    28                 }).eq(0).trigger("mouseover");
    29 
    30         // 上一页、下一页按钮透明度处理
    31         $(focusDivName + " .preNext").css("opacity", 0.2).hover(function() {
    32             $(this).stop(true, false).animate({
    33                 "opacity" : "0.5"
    34             }, 300);
    35         }, function() {
    36             $(this).stop(true, false).animate({
    37                 "opacity" : "0.2"
    38             }, 300);
    39         });
    40 
    41         // 上一页按钮
    42         $(focusDivName + " .pre").click(function() {
    43             index -= 1;
    44             if (index == -1) {
    45                 index = len - 1;
    46             }
    47             showPics(index);
    48         });
    49 
    50         // 下一页按钮
    51         $(focusDivName + " .next").click(function() {
    52             index += 1;
    53             if (index == len) {
    54                 index = 0;
    55             }
    56             showPics(index);
    57         });
    58 
    59         // 本例为左右滚动,即所有li元素都是在同一排向左浮动,所以这里需要计算出外围ul元素的宽度
    60         $(focusDivName + " ul").css("width", sWidth * (len));
    61 
    62         // 鼠标滑上焦点图时停止自动播放,滑出时开始自动播放
    63         $(focusDivName).hover(function() {
    64             clearInterval(picTimer);
    65         }, function() {
    66             picTimer = setInterval(function() {
    67                 showPics(index);
    68                 index++;
    69                 if (index == len) {
    70                     index = 0;
    71                 }
    72             }, 4000); // 此4000代表自动播放的间隔,单位:毫秒
    73         }).trigger("mouseleave");
    74 
    75         // 显示图片函数,根据接收的index值显示相应的内容
    76         function showPics(index) { // 普通切换
    77             var nowLeft = -index * sWidth; // 根据index值计算ul元素的left值
    78             $(focusDivName + " ul").stop(true, false).animate({
    79                 "left" : nowLeft
    80             }, 300); // 通过animate()调整ul元素滚动到计算出的position
    81             // //为当前的按钮切换到选中的效果
    82             $(focusDivName + " .btn span").stop(true, false).animate({
    83                 "opacity" : "0.4"
    84             }, 300).eq(index).stop(true, false).animate({
    85                 "opacity" : "1"
    86             }, 300); // 为当前的按钮切换到选中的效果
    87         }
    88     };
    89 </script>

    css代码:

      1 ul,li {
      2     list-style: none;
      3 }
      4 
      5 img {
      6     border: 0;
      7 }
      8 
      9 .wrapper {
     10     width: 625px;
     11     margin: 0 auto;
     12     padding-bottom: 50px;
     13 }
     14 
     15 h1 {
     16     height: 50px;
     17     line-height: 50px;
     18     font-size: 22px;
     19     font-weight: normal;
     20     font-family: "Microsoft YaHei", SimHei;
     21     margin-bottom: 20px;
     22 }
     23 
     24 /* focus */
     25 #focus {
     26     width: 625px;
     27     height: 220px;
     28     overflow: hidden;
     29     position: relative;
     30 }
     31 
     32 #focus ul {
     33     z-index: 0;
     34     height: 220px;
     35     position: absolute;
     36     padding-left: 0px;
     37 }
     38 
     39 #focus ul li {
     40     float: left;
     41     width: 625px;
     42     height: 220px;
     43     overflow: hidden;
     44     position: relative;
     45     background: #000;
     46 }
     47 
     48 #focus ul li div {
     49     position: absolute;
     50     overflow: hidden;
     51 }
     52 
     53 #focus .btnBg {
     54     position: absolute;
     55     width: 625px;
     56     height: 20px;
     57     left: 0;
     58     bottom: 0;
     59     background: #000;
     60 }
     61 
     62 #focus .btn {
     63     position: absolute;
     64     width: 625px;
     65     height: 10px;
     66     padding: 5px 10px;
     67     right: 0;
     68     bottom: 0;
     69     text-align: right;
     70 }
     71 
     72 #focus .btn span {
     73     display: inline-block;
     74     _display: inline;
     75     _zoom: 1;
     76     width: 25px;
     77     height: 10px;
     78     _font-size: 0;
     79     margin-left: 5px;
     80     cursor: pointer;
     81     background: #fff;
     82 }
     83 
     84 #focus .btn span.on {
     85     background: #fff;
     86 }
     87 
     88 #focus .preNext {
     89     width: 45px;
     90     height: 100px;
     91     position: absolute;
     92     top: 60px;
     93     background: url(images/index2013/sprite.png) no-repeat 0 0;
     94     cursor: pointer;
     95 }
     96 
     97 #focus .pre {
     98     left: 0;
     99 }
    100 
    101 #focus .next {
    102     right: 0;
    103     background-position: right top;
    104 }
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  • 原文地址:https://www.cnblogs.com/kcher90/p/3465549.html
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