<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>input失去焦点和获得焦点jquery焦点事件插件 - 懒人建站</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function(){
//focusblur
jQuery.focusblur = function(focusid) {
var focusblurid = $(focusid);
var defval = focusblurid.val();
focusblurid.focus(function(){
var thisval = $(this).val();
if(thisval==defval){
$(this).val("");
}
});
focusblurid.blur(function(){
var thisval = $(this).val();
if(thisval==""){
$(this).val(defval);
}
});
};
/*下面是调用方法*/
$.focusblur("#searchkey");
});
</script>
</head>
<body>
<form action="" method="post">
<input name="" type="text" value="输入搜索关键词" id="searchkey"/>
<input name="" type="submit" id="searchbtn" value="搜索"/>
</form>
<p>input失去焦点和获得焦点jquery焦点事件插件，<br/><strong style="color:#F00">鼠标在搜索框中点击的时候里面的文字就消失了</strong>。</p>
</body>
</html>