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영문자나 숫자만 입력 할 수 있게 하기 입니다.

· 2016-01-16 (토) 16:20:40 · 2418

<HTML>
<HEAD>
<META http-equiv="content-type" content="text/html; charset=euc-kr">

<SCRIPT LANGUAGE="JavaScript">
<!--
function validate(field) {
var valid = "abcdefghijklmnopqrstuvwxyz0123456789"
var ok = "yes";
var temp;
for (var i=0; i<field.value.length; i++) {
temp = "" + field.value.substring(i, i+1);
if (valid.indexOf(temp) == "-1") ok = "no";
}
if (ok == "no") {
alert("영문자와 숫자만 입력할 수 있습니다");
field.focus();
field.select();
  }
}
//-->
</script>

</HEAD>

<BODY>

<form>
아이디 <input type=text name="entry" onBlur="validate(this)">
<input type=submit>
<br><br>
※ 아이디는 영문자나 숫자만 가능합니다
</form>

</BODY>
</HTML>

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