<!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><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>无标题文档</title></head><body> <center> <form> name<input type="text" id='name'/> <br /> key <input type="text" id='key'/> <br /> <br /> <input type="button" value="submit" id='sub' onclick="check()"/> <input type="reset" value="clear" id='clr'/> </form></center><script type="text/javascript">var name=document.getElementById('name');var key=document.getElementById('key');function check(){ if (name.value==""){ alert("please input your name!"); } if (key.value==""){ alert("input your key!"); } }</script></body></html>
添加回答
举报
0/150
提交
取消