Original Style: (pay attention to the changes in the scroll bar)
The Code is as follows:
?| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687 | <!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></title> <style type="text/css"> * { margin:0; padding:0;font:normal 12px/17px Arial; } .msg {width:300px; margin:100px; } .msg_caption { width:100%; overflow:hidden; margin-bottom:1px;} .msg_caption span { display:block; float:left; margin:0 2px; padding:4px 10px; background:#898989; cursor:pointer;color:white; } .msg textarea{ width:300px; height:80px;height:100px;border:1px solid #000;} </style> <! -- Introduce jQuery --> <script src="../scripts/jquery-1.3.1.js" type="text/javascript"></script> <script type="text/javascript"> $(function(){ Var $ comment = $ ('# comment'); // get the comment box $ ('. Up'). click (function () {// bind a click event to the up button If (! $ Comment. is (": animated") {// determines whether the animation is in progress. $comment.animate({ scrollTop : "-=50" } , 400); } }) $ ('. Low'). click (function () {// bind a click event to the down button if(!$comment.is(":animated")){ $comment.animate({ scrollTop : "+=50" } , 400); } }); }); </script> </head> <body> <form action="" method="post"> <div class="msg"> <div class="msg_caption"> <span class="up" > Up </span> <span class="down" > Down </span> </div> <div> <textarea id="comment" rows="8" cols="20"> The height of the multi-line text box varies. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. the height of the multi-line text box changes. </textarea> </div> </div> </form> </body> </html> |
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