首页 > 代码库 > 字段的占位符文本

字段的占位符文本

<!doctype html><html>  <head>    <meta charset="utf-8">    <title>搜索框占位符文本</title>    <style type="text/css">*{font-size:12px;}#switcher input{height:26px;width:200px;}.overlabel{position:raletive;}.overlabel label{position:absolute;top:16px;left:16px;}        </style>    <script src="./jquery.js"></script><script type="text/javascript">$(function(){    var $search=$("#search").addClass("overlabel");//虽然是给变量赋值,但是已经执行了,同时,其实执行完毕还是它本身    var $searchInput=$search.find("input");    var $searchLabel=$search.find("label");    if($searchInput.val()){        $searchLabel.hide();    }    $searchInput.focus(function(){        $searchLabel.hide();    })    .blur(function(){        if($searchInput.val()==‘‘){        $searchLabel.show();        }    });    $searchLabel.click(function(){        $searchInput.trigger("focus");    });});</script>  </head>    <body><div id="switcher"><form id="search" method="" action="" ><label>字段的占位符文本</label><input type="text" value="" id="txt" maxlength="150" name="txtname" /></div></body></html>