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  <title>Foro Vida Una : Contar carácteres de un textarea</title>
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  <pubDate>Thu, 14 May 2026 20:59:40 +0000</pubDate>
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   <title><![CDATA[Contar carácteres de un textarea : Insertar primero la funci&#243;n entre...]]></title>
   <link>https://www.vidauna.com/contar-carcteres-de-un-textarea_topic1418_post4811.html#4811</link>
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    <![CDATA[<strong>Author:</strong> <a href="https://www.vidauna.com/member_profile.asp?PF=110">Programador</a><br /><strong>Subject:</strong> 1418<br /><strong>Posted:</strong> 28&nbsp;Febrero&nbsp;2011 at 11:55am<br /><br />Insertar primero la función entre &lt;head&gt; y &lt;/head&gt;:<DIV>&nbsp;</DIV><DIV><strong>function characterCounter(charNoBox, textFeild) {<BR>&nbsp;document.getElementById(charNoBox).value = document.getElementById(textFeild).value.length;<BR>}<BR></strong></DIV><DIV>&nbsp;</DIV><DIV>Ahora inserta el cuadro de texarea en el lugar donde quieras:</DIV><DIV>&nbsp;</DIV><DIV><strong>&lt;textarea name="textarea" cols="90" rows="15" onKeyDown="characterCounter('sigChars', 'textarea');" onKeyUp="characterCounter('sigChars', 'textarea');" id="textarea"&gt;&lt;/textarea&gt;</strong></DIV><DIV>&nbsp;</DIV><DIV>&nbsp;</DIV><DIV>Y por último coloca este campo que es el que te mostrará la suma de los carácteres escritos en el texarea:</DIV><DIV>&nbsp;</DIV><DIV><strong>&lt;input name="sigChars" id="sigChars" value="0" size="3" maxlength="3" readonly="readonly" /&gt;</strong></DIV>]]>
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