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<script src="/js/jquery-1.4.1.js" type="text/javascript"></script> |
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<script type="text/javascript"> |
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var pageindex = 1; |
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var pagesize = 2; |
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$(function () { |
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previous(); |
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}) |
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function previous() { |
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if (pageindex < 1 || pageindex == 1) { |
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pageindex = 1; |
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$("#imgdiv img:lt(" + pagesize + ")").show(); |
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$("#imgdiv img").not($("#imgdiv img:lt(" + pagesize + ")")).hide(); |
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} |
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else { |
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pageindex--; |
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if (pageindex != 1) { |
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$("#imgdiv img:gt(" + ((pageindex - 1) * pagesize - 1) + "):lt("+ pagesize + ")").show(); |
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$("#imgdiv img").not($("#imgdiv img:gt("+ ((pageindex - 1) * pagesize - 1) + "):lt(" + pagesize + ")")).hide(); |
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} |
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if (pageindex == 1) { |
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$("#imgdiv img:lt(" + pagesize + ")").show(); |
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$("#imgdiv img").not($("#imgdiv img:lt(" + pagesize + ")")).hide(); |
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} |
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} |
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} |
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function next() { |
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var p = $("#imgdiv img").length / pagesize; |
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var pagecount = parseInt(Math.ceil(p)); |
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if (pageindex + 1 > pagecount) { |
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pageindex = pagecount; |
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} else { |
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pageindex++; |
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} |
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$("#imgdiv img:gt(" + ((pageindex - 1) * pagesize - 1) + "):lt("+ pagesize + ")").show(); |
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$("#imgdiv img").not($("#imgdiv img:gt("+ ((pageindex - 1) * pagesize - 1) + "):lt(" + pagesize + ")")).hide(); |
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} |
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</script> |
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<div> |
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<a href="javascript:previous()">上一页</a> |
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<div id="imgdiv"> |
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<img src="/images/001.jpg" alt="第一页的第一张"/> |
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<img src="/images/002.jpg" /> |
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<img src="/images/003.jpg" /> |
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<img src="/images/004.jpg" /> |
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<img src="/images/005.jpg"/> |
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</div> |
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<a href="javascript:next()">下一页</a> |
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</div> |