最近几天做了一个项目,原来是用css3动画做的,由于不兼容IE,改成用js做了,特此分享给大家,供大家参考,代码有bug欢迎提出,写的不好还请见谅!
<!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\" xml:lang=\"en\"> <head> <meta http-equiv=\"Content-Type\" content=\"text/html;charset=UTF-8\" /> <title>float left and top</title> <style type=\"text/css\"> .w1000{position:relative;width:1000px;margin:0 auto;} .positionpub{position:absolute;} .positionpub p{width:50px;height:50px;background:#333;color:#fff;line-height:50px;text-align:center;position:absolute;} .ad_Float{top:50px;left:50px;} .ad_Float1{top:150px;left:250px;} .ad_Float2{top:250px;left:450px;} </style> </head> <body> <div class=\"w1000\"> <div class=\"ad_Float positionpub\"> <p id=\"ad_Float\">left</p> </div> <div class=\"ad_Float1 positionpub\"> <p id=\"ad_Float1\">right</p> </div> <div class=\"ad_Float2 positionpub\"> <p id=\"ad_Float2\">down</p> </div> </div> <script type=\"text/javascript\"> var x = 0, y = 0 , x1 = 0; var xin = true, yin = true; var step = 1,step2 = 2; var delay = 10; var obj = document.getElementById(\"ad_Float\"); var obj1 = document.getElementById(\"ad_Float1\"); var obj2 = document.getElementById(\"ad_Float2\"); function ad_Float() { var L = 0; var R = 100; obj.style.left = x + document.documentElement.scrollLeft + \"px\"; x = x + step * (xin ? 1 : -1); if (x < L) { xin = true; x = L; } if (x > R) { xin = false; x = R; } }; function ad_Float1() { var L1 = 0; var R1 = 100; obj1.style.left = x1 + document.documentElement.scrollLeft + \"px\"; x1 = x1 + step * (xin ? 1 : -1); if (x1 < L1) { xin = true; x1 = L1; } if (x1 > R1) { xin = false; x1 = R1; } }; function ad_Float2() { var T = 0; var B = 150; obj2.style.top = y + document.documentElement.scrollTop + \"px\"; y = y + step2 * (yin ? 1 : -1); if (y < T) { yin = true; y = T; } if (y > B) { yin = false; y = B; } }; var itl = setInterval(\"ad_Float()\", delay); var itl1 = setInterval(\"ad_Float1()\", delay); var itl2 = setInterval(\"ad_Float2()\", delay); </script> </body> </html>
代码到此结束了,希望对大家有所帮助!
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