vb不会
可改为
<html>
<head>
<script>function mouseover_handler()
{
document.form1.username.focus();
document.form1.username.select();
}</script>
</head>
<body>
<table>
<form name="form1">
<td>
<input type="text" name="username" value="请输入" onmouseover="mouseover_handler()" >
</td>
</form>
</table>
</body>
<html>
可改为
<html>
<head>
<script>function mouseover_handler()
{
document.form1.username.focus();
document.form1.username.select();
}</script>
</head>
<body>
<table>
<form name="form1">
<td>
<input type="text" name="username" value="请输入" onmouseover="mouseover_handler()" >
</td>
</form>
</table>
</body>
<html>
解决方案 »
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