日期:2014-05-16 浏览次数:20500 次
<!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>
    <title></title>
    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
    <script>
        $(function () {
            $('#a').click(function () {
                alert($('input[name=filename]').val());
            })
        })
    </script>
</head>
<body>
<input type='file' name='filename' size='15'>
<input id='a' value='upload' type='button' />
</body>
</html>
------解决方案--------------------
<!DOCTYPE HTML>
<html>
	<head>
		<meta charset="gb2312" />
		<title></title>		
	</head>
	<body>
		<input type='file' name='filename' size='15' onchange="alert(this.value)">
	</body>
</html>
------解决方案--------------------
判断文本框里面有值没。