<!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="scripts/jquery-1.7.2.js" type="text/javascript"></script>
<script type="text/javascript">
$(function () {
$("#btnSubmit").click(function () {
$("input[type='text']").each(function () {
if ($(this).val() == "") {
alert("不能为空！");
}
})
})
})
</script>
</head>
<body>
<div id="test">
<input type="text" id="txtName" />
<input type="text" id="txtPwd" />
<input type="button" id="btnSubmit" value="提 交" />
</div>
</body>
</html>
<!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="scripts/jquery-1.7.2.js" type="text/javascript"></script>
<script type="text/javascript">
$(function () {
$("#btnSubmit").click(function () {
$("div").find("input[type='text']").each(function () {
if ($(this).val() == "") {
alert("不能为空！");
}
})
})
})
</script>
</head>
<body>
<div id="test">
<input type="text" id="txtName" />
<input type="text" id="txtPwd" />
<input type="button" id="btnSubmit" value="提 交" />
</div>
</body>
</html>
