JavaScript图像库中的下一个和上一个链接不起作用

Next and previous linking in JavaScript image gallery not working

本文关键字：上一个 链接 不起作用 下一个 图像 JavaScript      更新时间：2023-09-26

我需要在同一页面上有多个库（带标题），并且一直在尝试实现这个javascript，但我无法获得下一个|前一个链接来为任何一个库工作。javascript新手-有什么建议吗？

这是小提琴：http://jsfiddle.net/astHh/11/

HTML:

<div style="text-align: center">
  <!--  Place the first image here  -->
  <img src="http://www.cool-smileys.com/images/out11.jpg" id="mypic" name="mypic" alt="information" border="0" height="150" width="200">
  <br>
  <!--  Place the text for the first image here  --><div id="burns">Caption one</div>
  <p>
  <a href="#" onclick="S2.UpDown(-1); return false;">&laquo; Previous</a> |
  <a href="#" onclick="S2.UpDown(1); return false;"> Next &raquo;</a>
</div>
<p>
<div style="text-align: center">
  <!--  Place the first image here  -->
  <img src="http://www.cool-smileys.com/images/out13.jpg" id="mypic2" name="mypic2" alt="information" border="0" height="150" width="200">
  <br>
  <!--  Place the text for the first image here  --> <div id="burns2">Caption two</div>
  <p>
  <a href="#" onclick="S2.UpDown(-1); return false;">&laquo; Previous</a> |
  <a href="#" onclick="S2.UpDown(1); return false;"> Next &raquo;</a>
</div>

Javascript：

<script type="text/javascript">

function SimpleSlideShow(o){
 this.img=document.getElementById(o.ImageID);
 this.txt=document.getElementById(o.TextID);
 this.ary=o.Array||[];
 this.cnt=0;
}
SimpleSlideShow.prototype.UpDown=function(ud){
  this.cnt+=ud;
  this.cnt=this.cnt<0?this.ary.length-1:this.cnt==this.ary.length?0:this.cnt;
  if (this.ary[this.cnt]){
   if (this.img&&this.ary[this.cnt][0]){
    this.img.src=this.ary[this.cnt][0];
    this.img.alt=this.ary[this.cnt][1];
   }
   if (this.txt){
    this.txt.innerHTML=this.ary[this.cnt][2]||'';
   }
  }
 }
S1=new SimpleSlideShow({
 ImageID:'mypic',
 TextID:'burns',
 Array:[
  ['http://www.cool-smileys.com/images/out11.jpg,' 'Caption one', 'The beautiful mountains'],
  ['http://www.cool-smileys.com/images/out10.jpg','Caption two','The crystal clear lake'],
]
});
S2=new SimpleSlideShow({
 ImageID:'mypic2',
 TextID:'burns2',
 Array:[
  ['http://www.cool-smileys.com/images/out13.jpg','caption one', 'The beautiful mountains'],
  ['http://www.cool-smileys.com/images/out12.jpg','caption two','The lonesome, barren tree']
]
});

</script>

您的javascript:中有多个语法错误

从脚本窗格中删除：

<script type="text/javascript">
</script>

在你对"S1"的定义中，你缺少了一个逗号（就在"标题一"之前）：

S1=new SimpleSlideShow({
    ImageID:'mypic',
    TextID:'burns',
    Array:[
        ['http://www.cool-smileys.com/images/out11.jpg,','Caption one', 'The beautiful mountains'],
        ['http://www.cool-smileys.com/images/out10.jpg','Caption two','The crystal clear lake'],
    ]
});

然后在HTML窗格中，您应该将第一组上一个/下一个链接更新到目标S1，而不是S2。

更新的小提琴：http://jsfiddle.net/astHh/12/

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