Chia sẻ Giới hạn ký tự chủ đề bài viết

Code:

<input type="text" class="textbox" name="subject" size="40" maxlength="85" value="{$subject}" tabindex="1" />

Code:

<input name="subject" type="text" onKeyDown="limitText(this.form.subject,this.form.countdown,150);" 
 onKeyUp="limitText(this.form.subject,this.form.countdown,150);" size="60" maxlength="150" value="{$subject}">
 <font size="1">
 Bạn còn <input readonly type="text" name="countdown" size="3" value="150"> ký tự.</font>
 </form>
 <script language="javascript" type="text/javascript">
 function limitText(limitField, limitCount, limitNum) {
     if (limitField.value.length > limitNum) {
         limitField.value = limitField.value.substring(0, limitNum);
     } else {
         limitCount.value = limitNum - limitField.value.length;
     }
 }
 </script>