第九次jsp
摘要:<body> <script type="text/javascript"> function yz() { if (form1.userName.value == "") { alert("用户名不能为空"); form1.userName.focus(); return form1(); } i
阅读全文
posted @ 2020-05-30 14:11
posted @ 2020-05-30 14:11
posted @ 2020-05-30 13:55
posted @ 2020-05-12 13:24