只留一个输入框空缺
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=gb2312">
<title>onenter onexit 使用一例</title>
<style>
.in{
border-right: black 1px solid; border-top: black 1px solid; font-size: 9pt; border-left: black 1px solid; color: #000000; border-bottom: black 1px solid; height: 17px; background-color: #e4e4e4;
}
</style>
<script language=javascript>
<!--
function onenter( field ) { if( field.value == field.defaultvalue ) { field.value = ""; } }
function onexit( field ) { if( field.value == "" ) { field.value = field.defaultvalue; } }
-->
</script>
</head>
<body>
<table>
<td>
<input onblur=onexit(this) class="in" onfocus=onenter(this) value=express>
<input onblur=onexit(this) class="in" onfocus=onenter(this) value=express>
<input onblur=onexit(this) class="in" onfocus=onenter(this) value=express>
<input onblur=onexit(this) class="in" onfocus=onenter(this) value=express>
<input onblur=onexit(this) class="in" onfocus=onenter(this) value=express>
<input onblur=onexit(this) class="in" onfocus=onenter(this) value=express>
<input onblur=onexit(this) class="in" onfocus=onenter(this) value=express>
<input onblur=onexit(this) class="in" onfocus=onenter(this) value=express>
<input onblur=onexit(this) class="in" onfocus=onenter(this) value=express>
<input onblur=onexit(this) class="in" onfocus=onenter(this) value=express>
</td>
</table>
</body>
</html>
