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Tuesday, July 21, 2015

How to Limit Number of Characters in Textarea using jQuery

How to Limit Number of Characters in Textarea using jQuery
<!DOCTYPE html>
<html>
<head>
  <meta http-equiv="content-type" content="text/html; charset=UTF-8">
  <title>jQuery Limit Characters in Textarea</title> 
  <script type='text/javascript' src='http://code.jquery.com/jquery-1.8.3.js'></script>
  <style type='text/css'>
    body {
    font-family:Calibri;
}
.remaining {
    color:blue;
}
textarea {
    font-family:Calibri;
}
  </style>
<script type='text/javascript'>//<![CDATA[ 
$(window).load(function(){
$(function () {
    var nMaxLength = 150;
    $("#txtDesc").keydown(function (event) {
        LimitCharacters($(this));
    });
    $("#txtDesc").keyup(function (event) {
        LimitCharacters($(this));
    });

    function LimitCharacters(txtDesc) {
        if (txtDesc.val().length > nMaxLength) {
            txtDesc.val(txtDesc.val().substring(0, nMaxLength));
        } else {
            var nRemaining = nMaxLength - txtDesc.val().length;
            $('.remaining').text(nRemaining);
        }
    }
});
});//]]>  
</script>
</head>
<body>
  <textarea name="txtDesc" rows="4" cols="50" id="txtDesc" onDrop="return false;" style="width:70%;"></textarea>
<br/>Remaining: <b><span class="remaining">150</span></b>
</body>
</html>

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