javascript - Text Area in JSP Enter to implement a functionality -

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i using spring mvc , have created textarea in it, want add functionality: when user presses 'enter' 2 times cursor automatically go next line , indicate paragraph number in new line:

here code textarea:

<textarea   name="notings" style="width:800px ; height:200px" ></textarea>

example:

  1. users types ... ................................ //presses enter key 2 times consecutively

  2. types else....

i clueless in implementing functionality. starter @ front end development , don't know javascript well. little appreciated.

if point me towards right direction, alot

thanks in advance

you try way 

<html> <head>     <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>     <script>     var pn=1;         var count=0;     function newlinefun(e)     {     if(e.keycode==13)         {         count++;         if(count==2)         {         count=0;         var olddata=$("#txtarea").val();         $("#txtarea").val(olddata+pn);         pn++;         }         }         else{         count=0;         }      } </script> </head> <body> <textarea  id="txtarea" name="notings" style="width:800px ; height:200px" onkeypress="newlinefun(event)"></textarea> </body> </html>

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