JavaScript仅英文字母下划线允许输入

<form name="form1" onSubmit="return Validator.Validate(this,3)" >

<INPUT TYPE="text" NAME="text1" dataType="Custom" regexp="^[\u0391-\uFFE5]+$|[A-Za-z0-9_]" msg="输入内容含有非法字符!">

<INPUT TYPE="submit" >

</form>

<script>

Validator = {

Require : /.+/,

Email : /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/,

Phone : /^((\(\d{3}\))|(\d{3}\-))?(\(0\d{2,3}\)|0\d{2,3}-)?[1-9]\d{6,7}$/,

Mobile : /^((\(\d{3}\))|(\d{3}\-))?13\d{9}$/,

Url : /^http:\/\/[A-Za-z0-9]+\.[A-Za-z0-9]+[\/=\?%\-&_~`@[\]\':+!]*([^<>\"\"])*$/,

IdCard : /^\d{15}(\d{2}[A-Za-z0-9])?$/,

Currency : /^\d+(\.\d+)?$/,

Number : /^\d+$/,

Zip : /^[1-9]\d{5}$/,

QQ : /^[1-9]\d{4,8}$/,

Integer : /^[-\+]?\d+$/,