经过CSS,Jquery实现DIV的各类动做(包括漂移,未测试IE6)

版权声明: 本文由 一只博客 发表于 bloghome博客javascript

文章连接: https://www.bloghome.com.cn/user/cnn237111css

此文实现了以下效果:html

jquery得到窗口高宽,文档高宽值。java

经过CSS设置,实现DIV置顶,置底,置左,置右,居中。jquery

利用jquery实现DIV四个方向随滚动条,窗体大小浮动。浏览器

一个漂浮反弹的DIV。ide

 

<!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>     <title>获取窗口高度宽度,DIV置顶,置底,置左,置右,居中,随滚动条居中</title>     <script src="http://code.jquery.com/jquery-1.7.2.min.js" type="text/javascript"></script>     <script type="text/javascript">         $(function () {             showwidth_height();             $(window).resize(showwidth_height);             $(window).scroll(movesmallleft);             $(window).resize(movesmallleft);              $(window).scroll(movesmallright);             $(window).resize(movesmallright);              $(window).scroll(movesmalltop);             $(window).resize(movesmalltop);              $(window).scroll(movesmallbottom);             $(window).resize(movesmallbottom);              var ivl = setInterval("floatdiv()", 10); //ivl变量,用来可使得setInterval中止。经过clearInterval方法。             $("#floatdiv").hover(function () { clearInterval(ivl) }, function () { ivl = setInterval("floatdiv()", 10); });         })          function showwidth_height() {             var s = ""                 + "浏览器当前窗口可视区域高度:" + $(window).height() + "<br/>"                 + "浏览器当前窗口文档的高度:" + $(document).height() + "<br/>"                 + "浏览器当前窗口文档body的高度:" + $(document.body).height() + "<br/>"                 + "浏览器当前窗口文档body的总高度 包括border padding margin :" + $(document.body).outerHeight(true) + "<br/>"                 + "浏览器当前窗口可视区域宽度:" + $(window).width() + "<br/>"                 + "浏览器当前窗口文档对象宽度:" + $(document).width() + "<br/>"                 + "浏览器当前窗口文档body的宽度:" + $(document.body).width() + "<br/>"                 + "浏览器当前窗口文档body的总宽度 包括border padding margin:" + ($(document.body).outerWidth(true)) + "<br/>"             $("#center").html(s);         }          function movesmallleft() {             var topvalue = $(window).height() / 2 + $(window).scrollTop(); //滚动条滚动了多少偏移量,就要把这个偏移量加上去。             var leftvalue = 0 + $(window).scrollLeft(); //滚动条滚动了多少偏移量,就要把这个偏移量加上去。             //这里的stop方法至关必要             //中止正在进行的动画             //由于滚动条滚动的时候,会触发屡次scroll事件,每次触发的时候,都作动画影响效率,所以要加上stop方法             //使之当即中止后再作动画。             $("#smallleft").stop().animate({ top: topvalue, left: leftvalue, marginTop: "-10px" }, "slow");         }         function movesmallright() {             var topvalue = 150 + $(window).scrollTop(); //滚动条滚动了多少偏移量,就要把这个偏移量加上去。             var rightvalue = 0 - $(window).scrollLeft(); //滚动条滚动了多少偏移量,就要把这个偏移量加上去。             $("#smallright").stop().animate({ top: topvalue, right: rightvalue }, "slow");         }         function movesmalltop() {             var topvalue = 0 + $(window).scrollTop(); //滚动条滚动了多少偏移量,就要把这个偏移量加上去。             var leftvalue = $(window).width() / 2 + $(window).scrollLeft(); //滚动条滚动了多少偏移量,就要把这个偏移量加上去。             $("#smalltop").stop().animate({ top: topvalue, left: leftvalue }, "slow");         }         function movesmallbottom() {             var bottomvalue = 0 - $(window).scrollTop(); //滚动条滚动了多少偏移量,就要把这个偏移量加上去。             var leftvalue = $(window).width() / 2 + $(window).scrollLeft(); //滚动条滚动了多少偏移量,就要把这个偏移量加上去。             $("#smallbottom").stop().animate({ bottom: bottomvalue, left: leftvalue }, "slow");         }          var direct = "leftup";         //根据当前方向和偏移量,判断接下来的方向。         function floatdiv() {             var top = $("#floatdiv").offset().top;             var left = $("#floatdiv").offset().left;             //加上偏移量,主要用来处理滚动条的滚动时候对top,left的影响             if (top < 0 + $(window).scrollTop() && direct == "rightup") {                 direct = "rightdown";             }             else if (top < 0 + $(window).scrollTop() && direct == "leftup") {                 direct = "leftdown";             }             else if (left < 0 + $(window).scrollLeft() && direct == "leftup") {                 direct = "rightup";             }             else if (left < 0 + $(window).scrollLeft() && direct == "leftdown") {                 direct = "rightdown";             }             //加上div的高度             else if (top + 80 > $(window).height() + $(window).scrollTop() && direct == "leftdown") {                 direct = "leftup";             }             else if (top + 80 > $(window).height() + $(window).scrollTop() && direct == "rightdown") {                 direct = "rightup";             }             //加上div的宽度             else if (left + 80 > $(window).width() + $(window).scrollLeft() && direct == "rightdown") {                 direct = "leftdown";             }             else if (left + 80 > $(window).width() + $(window).scrollLeft() && direct == "rightup") {                 direct = "leftup";             }              if (direct == "leftdown") {                 toptop = top + 1;                 leftleft = left - 5;             } else if (direct == "rightdown") {                 toptop = top + 1;                 leftleft = left + 5;              } else if (direct == "rightup") {                 toptop = top - 1;                 leftleft = left + 5;              } else if (direct == "leftup") {                 toptop = top - 1;                 leftleft = left - 5;             }              $("#floatdiv").html(Date());             $("#floatdiv").offset({ "top": top, "left": left })         }      </script>     <style type="text/css">         #top         {             position: fixed;             top: 20px;             left: 0px;             height: 50px;             width: 100%;             background: #666666;             z-index: 6;             text-align: center;         }                  #left         {             position: fixed;             top: 50%;             left: 10px;             height: 300px;             width: 100px;             background: #666666;             z-index: 6;             text-align: center;             margin-top: -150px; /*由于不是50%不是真正的居中,因此要上移高度的一半*/         }                  #smallleft         {             position: absolute;             top: 50%;             left: 10px;             height: 20px;             width: 20px;             background: red;             z-index: 6;             text-align: center;             margin-top: -10px; /*由于不是50%不是真正的居中,因此要上移高度的一半*/         }                  #smallright         {             position: absolute;             top: 150px;             right: 0px;             height: 20px;             width: 20px;             background: red;             z-index: 6;             text-align: center;         }                  #smalltop         {             position: absolute;             top: 0px;             left: 50%;             height: 20px;             width: 20px;             background: red;             z-index: 6;             text-align: center;         }                  #smallbottom         {             position: absolute;             bottom: 0px;             left: 50%;             height: 20px;             width: 20px;             background: red;             z-index: 6;             text-align: center;         }                  #floatdiv         {             position: fixed;             top: 200px;             left: 300px;             height: 80px;             width: 80px;             background: blue;             z-index: 6;             text-align: center;         }                  #bottom         {             z-index: 6;             position: fixed;             bottom: 0px;             background: #666666;             height: 50px;             width: 100%;             text-align: center;         }                  #right         {             position: fixed;             top: 50%;             right: 10px;             height: 300px;             width: 100px;             background: #666666;             z-index: 6;             text-align: center;             margin-top: -150px; /*由于不是50%不是真正的居中,因此要上移高度的一半*/         }                  #center         {             position: fixed;             top: 50%;             left: 50%;             height: 200px;             width: 400px;             background: #666666;             z-index: 6;             text-align: center;             margin-top: -100px; /*由于不是50%不是真正的居中,因此要上移高度的一半*/             margin-left: -200px; /*由于不是50%不是真正的居中,因此要左移宽度的一半*/         }     </style> </head> <body>     <div id="top">         TOP     </div>     <div id="left">         LEFT     </div>     <div id="bottom">         BOTTOM     </div>     <div id="right">         RIGHT     </div>     <div id="center">         CENTER     </div>     <div id="smallleft">     </div>     <div id="smallright">     </div>     <div id="smallbottom">     </div>     <div id="smalltop">     </div>     <div id="floatdiv">     </div>     <div style="height: 1024px; background-color: Silver">         <pre>         绝对定位使元素的位置与文档流无关,所以不占据空间。     这一点与相对定位不一样,相对定位实际上被看做普通流定位模型的一部分,由于元素的位置相对于它在普通流中的位置。     普通流中其它元素的布局就像绝对定位的元素不存在同样:      绝对定位的元素的位置相对于最近的已定位祖先元素,若是元素没有已定位的祖先元素,那么它的位置相对于最初的包含块。  </pre>         <table>             <tr>                 <td>                     absolute                 </td>                 <td>                     <p>                         生成绝对定位的元素,相对于 static 定位之外的第一个父元素进行定位。</p>                     <p>                         元素的位置经过 &quot;left&quot;, &quot;top&quot;, &quot;right&quot; 以及 &quot;bottom&quot;                         属性进行规定。</p>                 </td>             </tr>             <tr>                 <td>                     fixed                 </td>                 <td>                     <p>                         生成绝对定位的元素,相对于浏览器窗口进行定位。</p>                     <p>                         元素的位置经过 &quot;left&quot;, &quot;top&quot;, &quot;right&quot; 以及 &quot;bottom&quot;                         属性进行规定。</p>                 </td>             </tr>             <tr>                 <td>                     relative                 </td>                 <td>                     <p>                         生成相对定位的元素,相对于其正常位置进行定位。</p>                     <p>                         所以,&quot;left:20&quot; 会向元素的 LEFT 位置添加 20 像素。</p>                 </td>             </tr>             <tr>                 <td>                     static                 </td>                 <td>                     默认值。没有定位,元素出如今正常的流中(忽略 top, bottom, left, right 或者 z-index 声明)。                 </td>             </tr>             <tr>                 <td>                     inherit                 </td>                 <td>                     规定应该从父元素继承 position 属性的值。                 </td>             </tr>         </table>     </div> </body> </html>
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