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±ÛÀÚ¼ö¸¦ ¹ÙÀÌÆ®(Byte)·Î °è»êÇÏ¿© ¾Ë·ÁÁÖ´Â ¼Ò½º
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ÀÔ·ÂµÈ ±ÛÀÚ°¡ ¸î Byte ÀÎÁö üũÇÏ´Â ¼Ò½º ÀÔ´Ï´Ù.
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ù¹ø° ¹æ¹ý

<script language="javascript">
// ±ÛÀÚ¼ö Byte üũ
// value = ¹®ÀÚ¿­
// id = ¹ÙÀÌÆ® ¼ýÀÚ Ç¥½Ã id ¸í
function TextByteChk(str,id)
{
var len = 0;

for (var inx = 0; inx < str.length; inx++) {
  var oneChar = escape(str.charAt(inx));
  if ( oneChar.length == 1 ) {
   len ++;
  } else if (oneChar.indexOf("%u") != -1) {
   len += 2;
  } else if (oneChar.indexOf("%") != -1) {
   len += oneChar.length/3;
  }
}

document.getElementById(id).value = len;
}
</script>

<textarea onblur="TextByteChk(this.value,'bytewrite');" onKeyUP="TextByteChk(this.value,'bytewrite');"></textarea>
<input type="text" id="bytewrite" value="" readonly>



µÎ¹ø° ¹æ¹ý

<script language='javascript'>
String.prototype.bytes = function() {
var str = this;
var l = 0;
for (var i=0; i<str.length; i++) l += (str.charCodeAt(i) > 128) ? 2 : 1;
return l;
}

function cal_pre()
{
var size_check = document.form.comment.value;
document.form.size.value = size_check.bytes();
}

function check()
{
var size_check = document.form.comment.value;
if (size_check.bytes() > 200)
{
alert("ÀÛ¼ºÇϽŠ±ÛÀº "+size_check.bytes()+" Byte À̸ç 200 Byte ÀÌÇÏ·Î ÇØÁÖ¼¼¿ä");
}
else
{
alert("ÀÛ¼ºÇϽŠ±ÛÀº "+size_check.bytes()+" Byte ÀÔ´Ï´Ù.");
}
}
</script>

<form name='form'>
<input type='text' name='comment' value='' onKeyUP="javascript:cal_pre();">
<input type='text' name='size' size='3' value='' readonly>
<input type='button' value='È®ÀÎ' onclick='check()'>
</form>
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