高手们，我这代码运行时为什么出错_html/css

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高手们，我这代码运行时为什么出错_html/css_WEB-ITnose

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Jun 24, 2016 am 11:33 AM

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>CSS等高布局</title><script type="text/javascript" src="http://jt.875.cn/js/jquery.js"></script> <style type="text/css">#wrap{ overflow:hidden; width:1200px; margin:0 auto;}.top{    width:1200px;    height:150px;    background:#000;    margin-bottom: 10px; } .left{ float:left; width:150px; height:600px ; background:#00FFFF; }#center{    float:left;    width:880px;    height:1800px ;    background:#FF0000;    margin-right: 10px;    margin-left: 10px; }.right{ float:right; width:150px; height:600px ; background:#00FF00; } .bot{    width:1200px;    height:150px;    margin-top: 10px;    background-color: #00F; } </style></head><body><div id="wrap"> <div class="top"> </div>  <div class="left" id="left" > </div> <div id="center">  <p>center</p><p>center2</p><p>center3</p><p>center4</p><p>center5</p><p>center6</p><p>center7</p> </div> <div class="right" id="right"> </div>  <div class="bot"> </div> </div><script>var min_scroll=30;///触发效果的滚动条top值,$(document).scroll(function(){          if($(this).scrollTop()>=min_scroll&&!$('#left').attr('style'))    {           var right={'top':$('#right').offset().top,'left':$('#right').offset().left};        var left={'top':$('#left').offset().top,'left':$('#left').offset().left};        var center={'left':$('#center').position().left}        $('#center').css({'position':'absolute','left':center.left});        $('#left').css({'z-index':10,'position':'fixed','top':left.top,'left':left.left});        $('#right').css({'z-index':10,'position':'fixed','top':right.top,'left':right.left});    }    if($(this).scrollTop()<min_scroll&&$('#left').attr('style'))    {        $('#left').removeAttr('style');        $('#right').removeAttr('style');        $('#center').removeAttr('style');    }      });</script> </body></html>

效果就是这样，但是加入头部，和底部后，就变形了，两边的滚动那个上面永远有顶部高度的距离，想把这个距离去掉，另外底部自动跳到顶部的下面的。

回复讨论(解决方案)

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>CSS等高布局</title><script type="text/javascript" src="http://jt.875.cn/js/jquery.js"></script> <style type="text/css">#wrap{ overflow:hidden; width:1200px; margin:0 auto;}.top{    width:1200px;    height:150px;    background:#000;    margin-bottom: 10px; }  .left{ float:left; width:150px; height:600px ; background:#00FFFF; }#center{    float:left;    width:880px;    height:1800px ;    background:#FF0000;    margin-right: 10px;    margin-left: 10px; }.right{ float:right; width:150px; height:600px ; background:#00FF00; } .bot{      float:left;    width:1200px;    height:150px;    margin-top: 10px;    background-color: #00F; }  </style></head><body><div id="wrap"> <div class="top"> </div>   <div class="left" id="left" > </div> <div id="center">  <p>center</p><p>center2</p><p>center3</p><p>center4</p><p>center5</p><p>center6</p><p>center7</p><p>center8</p><p>center9</p><p>center10</p> </div> <div class="right" id="right"> </div>  <div class="bot" id="bot"> </div>  </div><script>var min_scroll=30;///触发效果的滚动条top值,$(document).scroll(function(){           if($(this).scrollTop()>=min_scroll&&!$('#left').attr('style'))    {           var right={'top':0,'left':$('#right').offset().left};        var left={'top':0,'left':$('#left').offset().left};        var center={'left':$('#center').position().left}        var bot={'top':0,'left':$('#bot').offset().left}        $('#bot').css({'position':'fixed','left':bot.left,'top':bot.top,'margin':0});        $('#center').css({'position':'absolute','left':center.left});        $('#left').css({'z-index':10,'position':'fixed','top':left.top,'left':left.left});        $('#right').css({'z-index':10,'position':'fixed','top':right.top,'left':right.left});    }    if($(this).scrollTop()<min_scroll&&$('#left').attr('style'))    {        $('#left').removeAttr('style');        $('#bot').removeAttr('style');        $('#right').removeAttr('style');        $('#center').removeAttr('style');    }       });</script>  </body></html>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>CSS等高布局</title><script type="text/javascript" src="http://jt.875.cn/js/jquery.js"></script> <style type="text/css">#wrap{ overflow:hidden; width:1200px; margin:0 auto;}.top{    width:1200px;    height:150px;    background:#000;    margin-bottom: 10px; }  .left{ float:left; width:150px; height:600px ; background:#00FFFF; }#center{    float:left;    width:880px;    height:1800px ;    background:#FF0000;    margin-right: 10px;    margin-left: 10px; }.right{ float:right; width:150px; height:600px ; background:#00FF00; } .bot{      float:left;    width:1200px;    height:150px;    margin-top: 10px;    background-color: #00F; }  </style></head><body><div id="wrap"> <div class="top"> </div>   <div class="left" id="left" > </div> <div id="center">  <p>center</p><p>center2</p><p>center3</p><p>center4</p><p>center5</p><p>center6</p><p>center7</p><p>center8</p><p>center9</p><p>center10</p> </div> <div class="right" id="right"> </div>  <div class="bot" id="bot"> </div>  </div><script>var min_scroll=30;///触发效果的滚动条top值,$(document).scroll(function(){           if($(this).scrollTop()>=min_scroll&&!$('#left').attr('style'))    {           var right={'top':0,'left':$('#right').offset().left};        var left={'top':0,'left':$('#left').offset().left};        var center={'left':$('#center').position().left}        var bot={'top':0,'left':$('#bot').offset().left}        $('#bot').css({'position':'fixed','left':bot.left,'top':bot.top,'margin':0});        $('#center').css({'position':'absolute','left':center.left});        $('#left').css({'z-index':10,'position':'fixed','top':left.top,'left':left.left});        $('#right').css({'z-index':10,'position':'fixed','top':right.top,'left':right.left});    }    if($(this).scrollTop()<min_scroll&&$('#left').attr('style'))    {        $('#left').removeAttr('style');        $('#bot').removeAttr('style');        $('#right').removeAttr('style');        $('#center').removeAttr('style');    }       });</script>  </body></html>

底部的BOT还是会把CENTER档上

你想哪个叠哪个 z-index就是表示他们重叠是时候显示的顺序，越大越在上面

你最好先理解下position的absolute,fixed还有与position搭配的top,bottom,left,right,z-index

你想哪个叠哪个 z-index就是表示他们重叠是时候显示的顺序，越大越在上面

我想想让bot不重叠，显示在最下面谢谢了

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