为缩略图库和较大图像库添加下一个和上一个按钮

Adding Next and Prev Button for Thumbnails Gallery and Larger Image Gallery

本文关键字：添加 下一个 按钮 图像 上一个 略图      更新时间：2023-09-26

我正在尝试为缩略图和较大的图像库添加下一个和上一个按钮。下一个和上一个按钮也应该支持键盘事件监听器。

这是我尝试过的链接。

http://jsfiddle.net/L7yKp/36/

我需要一些帮助。

这里我已经完成了添加下一个和上一个按钮的上述问题的完整解决方案。

演示：http://codebins.com/bin/4ldqp7y

HTML

<div id="panel">
  <div class="controls">
    <img src="http://aux.iconpedia.net/uploads/1698581142461241089.png" class="prev" />
    <span>
      Thumbnail Navigation 
    </span>
    <img src="http://cdn1.iconfinder.com/data/icons/fatcow/32x32_0760/resultset_next.png" class="next" />
  </div>

  <div id="thumbs">
    <div class="thumb active">
      <img src="http://images.replacements.com/images/images5/china/C/lenox_china_garden_birds_no_box_P0000014675S0122T2.jpg" width="100" height="80" />
    </div>
    <div class="thumb">
      <img src="http://coolfunnyanimals.com/thumb/funny-animal-bird-47.jpg" width="100" height="80" />
    </div>
    <div class="thumb">
      <img src="http://learnordie.files.wordpress.com/2012/05/thrasher.jpg" width="100" height="80" />
    </div>
    <div class="thumb">
      <img src="http://3.bp.blogspot.com/_N_mOB63qPaE/TSC17ceXRII/AAAAAAAARaQ/TeDi9FYIBPw/s1600/Flying-Bird-Picture-2.jpg" width="100" height="80" />
    </div>
    <div class="thumb">
      <img src="http://www.kevinhearne.com/wp-content/uploads/2011/11/pic6.jpg" width="100" height="80" />
    </div>
  </div>

  <div class="controls" align="center" width="400px">
    <img src="http://aux.iconpedia.net/uploads/1698581142461241089.png" class="prev" />
    <span>
      Large Image Navigation 
    </span>
    <img src="http://cdn1.iconfinder.com/data/icons/fatcow/32x32_0760/resultset_next.png" class="next" />
  </div>

  <div id="large">
    <div class="bigthumb active">
      <img src="http://images.replacements.com/images/images5/china/C/lenox_china_garden_birds_no_box_P0000014675S0122T2.jpg" />
    </div>
    <div class="bigthumb">
      <img src="http://coolfunnyanimals.com/thumb/funny-animal-bird-47.jpg" />
    </div>
    <div class="bigthumb">
      <img src="http://learnordie.files.wordpress.com/2012/05/thrasher.jpg" />
    </div>
    <div class="bigthumb">
      <img src="http://3.bp.blogspot.com/_N_mOB63qPaE/TSC17ceXRII/AAAAAAAARaQ/TeDi9FYIBPw/s1600/Flying-Bird-Picture-2.jpg" />
    </div>
    <div class="bigthumb">
      <img src="http://www.kevinhearne.com/wp-content/uploads/2011/11/pic6.jpg" />
    </div>
  </div>
</div>

CSS:

#thumbs{
  text-align:center;
  background:#77a5c6;
  padding:5px;
}
.thumb{
  display:inline-block;
  margin:0px;
  padding:0px;
  cursor:pointer;
}
#thumbs .active{
  border:3px solid #333;
}
.controls{
  margin-left:10px;
}
.controls img{
  cursor:pointer;
  margin:0px;
}
.controls span{
  font-size:13px;
  display:inline-block;
  vertical-align:top;
  margin-top:5px;
}
#large{
  text-align:center;
}
#large .bigthumb{
  display:none;
}
#large .active{
  display:block;
}
#large .active img{
  border:2px solid #333;
}

jQuery:

$(function() {
    $("#thumbs").find(".thumb:first").addClass("active");
    $("#large").find(".bigthumb:first").addClass("active");
    var getIndex = $("#thumbs").find(".active").index();
    $(".controls").each(function() {
        $(this).find(".next").click(function() {
            getIndex = $("#thumbs").find(".active").index();
            getIndex += 1;
            if (getIndex > ($("#thumbs").find(".thumb").length - 1)) {
                getIndex = 0;
            }
            setActiveImage(getIndex);
        });
        $(this).find(".prev").click(function() {
            getIndex -= 1;
            if (getIndex < 0) {
                getIndex = $("#thumbs").find(".thumb").length - 1;
            }
            setActiveImage(getIndex); //Set/Show Active Image
        });
    });
});
function setActiveImage(index) {
    if (typeof(index) == "undefined" || index == "" || index == null) index = 0;
    $("#thumbs").find(".thumb").removeClass("active");
    $("#thumbs").find(".thumb:eq(" + index + ")").addClass("active");
    $("#large").find(".bigthumb").removeClass("active");
    $("#large").find(".bigthumb:eq(" + index + ")").addClass("active");
}

演示：http://codebins.com/bin/4ldqp7y

请参阅http://jsfiddle.net/L7yKp/37/

问题是

$(['next','prev']).each(function(){
    var that=this;
    $('#'+that).click(function(){
        $('#thumbs img.clicked')[that]().click();
    });
});

因为现在你有

<a href="#" id="tnext">Next</a>
<a href="#" id="tprev">Prev</a>

和

<a href="#" id="lnext">Next</a>
<a href="#" id="lprev">Prev</a>

因此，解决方案是；

$(['next','prev']).each(function(){
    var that=this;
    $('.'+that).click(function(){
        $('#thumbs .clicked')[that]().click();
    });
});

和

<a href="#" class="next">Next</a>
<a href="#" class="prev">Prev</a>
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