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    • JAVASCRIPT正则表达式简单实现文本框验证

  • :未知  Դ:internet  :2007-5-20 16:39:44  ؼ:javascript

  • <!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 c_check()

    {

    var pattern=/\w|[-@.]|[\u4E00-\u9FA5]/g;

    flag_u=pattern.test(document.loginform.username.value);

    if(!flag_u||document.loginform.username.value.length<4||document.loginform.username.value.length>16)

    {

    alert("用户帐号输入非法!");

    document.loginform.username.focus();

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