中文(简体)
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <title>EMAIL检验</title> </head> <body> <SCRIPT LANGUAGE=" JavaScript"> <!-- function check() { if(document.register.email.value.length!=0) { if (document.register.email.value.charAt(0)=="." || 文档.register.email.value.charAt(0)=="@"|| document.register.email.value.indexOf('@', 0) == -1 || document.register.email.value.indexOf( '.', 0) == -1 || document.register.email.value.lastIndexOf("@")==document.register.email.value.length-1 || document.register.email.value.lastIndexOf (".")==document.register.email.value.length-1) {alert("Email的格式不正确！"); document.register.email.focus();返回假； } } else {alert("Email的不能为空！"); document.register.email.focus();返回假；返回假； } //--> </SCRIPT> <form name="register" method="POST" action onSubmit="return check();"> <palign="center"> 电子邮件：<input type="text" name="email" size="20"> <input type="submit" value="提交" name="B1"> <input type="reset" value="重填" name="B2"> </ p> </form> </body> </html>
