日期:2014-05-16 浏览次数:20503 次
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML> <HEAD> <TITLE> New Document </TITLE> <META NAME="Generator" CONTENT="EditPlus"> <META NAME="Author" CONTENT=""> <META NAME="Keywords" CONTENT=""> <META NAME="Description" CONTENT=""> </HEAD> <BODY> <script language="javascript"> function check(){ var email=document.getElementById("email").value; var isemail=(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) if (email=="") { alert("请输入您的邮箱!"); return false; } if (email.length>25) { alert("长度太长"); return false } if (!isemail.test(email)) { alert("不是邮箱"); return false; } } </script> <FORM METHOD=POST ACTION="" onsubmit="return check()"> <INPUT TYPE="text" NAME="email"><INPUT TYPE="submit"> </FORM> </BODY> </HTML>