判断邮箱 是否有效
<form action="submitpage.htm"onsubmit="return validate_form(this);" method="post">
Email: <input type="text" name="email" size="30">
<input type="submit" value="Submit">
</form>
- <script type="text/javascript">
- function validate_email(field,alerttxt)
- {
- with (field)
- {
- apos=value.indexOf("@")
- dotpos=value.lastIndexOf(".")
- if (apos<1||dotpos-apos<2)
- {alert(alerttxt);return false}
- else {return true}
- }
- }
- function validate_form(thisform)
- {
- with (thisform)
- {
- if (validate_email(email,"不是有效的电子邮件地址!")==false)
- {email.focus();return false}
- }
- }
- </script>
判断邮箱是否有效
判断邮箱 是否有效
原文:http://13057682.blog.51cto.com/13047682/1979368
来源: http://www.bubuko.com/infodetail-2383559.html