Validate the number of lines in textarea through Javascript - Javascript jQuery

Javascript examples for jQuery:Form Textarea

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Description

Validate the number of lines in textarea through Javascript

Demo Code

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<html>
 <head> 
  <meta name="viewport" content="width=device-width, initial-scale=1"> 
  <script type="text/javascript" src="https://code.jquery.com/jquery-1.7.js"></script> 
  <script type="text/javascript">
    $(window).load(function(){//from  ww  w.j  a  v a2  s .  c om
$("textarea").keydown(function(e){
   var rows = $(this).val().split("\n").length;
   if( e.which == 13 && rows == 3 )
   {
        console.log( "too many rows");
        return false;
   }
});
    });

      </script> 
 </head> 
 <body> 
  <textarea></textarea>  
 </body>
</html>

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