Max characters in textarea with jquery

Question

I have the following code, and I'm kind of stuck on what to do next. The idea is when you enter text into a text area a counter tells you how many characters you have left. Once you get to the max characters I want to stop allowing characters to be entered, or delete all the characters that were entered so there are only 10 characters in the text area. I know I have to put the code where it says alert("LONG"); but I'm not quite sure what.

var maxLen = 10;         console.log("Start");         $('#send-txt').keyup(function(){             var Length = $("#send-txt").val().length;             var AmountLeft = maxLen - Length;             $('#txt-length-left').html(AmountLeft);             if(Length >= maxLen){                 alert("LONG");             }            }); 

Answer 1

All of these answers are a bit odd in that they try to do a little too much. A simpler and visually more pleasing way (because it shows the text quickly being cut off) - and with with less oddities that the previous example (note how it overwrites the final key?) - is to simply cut off the number of characters on keyUp to the number that's allowed.

var maxchars = 400;  $('body').on('keyup paste', 'textarea', function () {     $(this).val($(this).val().substring(0, maxchars));     var tlength = $(this).val().length;     remain = maxchars - parseInt(tlength);     $('#remain').text(remain); }); 

Note that this then also works for pasting in text, as some of the examples above don't.

Example here: http://jsfiddle.net/PzESw/5/

Answer 2

Here it goes. Anything beyond character limit will be removed.

$('textarea').keypress(function(e) {     var tval = $('textarea').val(),         tlength = tval.length,         set = 10,         remain = parseInt(set - tlength);     $('p').text(remain);     if (remain <= 0 && e.which !== 0 && e.charCode !== 0) {         $('textarea').val((tval).substring(0, tlength - 1));         return false;     } }) 

Check working example at http://jsfiddle.net/JCehq/1/