防止按回车键后自动提交内容[网页特效] dn001 2009-06-21 08:36:00 <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)=="." || document.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(); return false; } } else { alert("Email的不能为空！"); document.register.email.focus(); return false; } return false; } //--> </SCRIPT> <form name="register" method="POST" action onSubmit="return check();"> <p align="center"> Email:<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>
