jquery text area length count?

Question

I have a text area field where i need to provide information about the word count when the user enters some text in the field. Length of the field is supposed to be 500 Ch

Answer 1

$("#your-text-area").on('keyup', function(event) {
    var currentString = $("#your-text-area").val()
    $("Your Div").html(currentString.length);
    if (currentString.length <= 500 )  {  /*or whatever your number is*/
       //do some css with your div
    } else {
       //do some different stuff with your div
    }
});

http://api.jquery.com/bind/