jQuery detect if textarea is empty

Question

I am trying to determine if a textarea is empty if a user deletes what is already pre-populated in the textarea using jQuery.

Anyway to do this?

This is what

Answer 1

This will check for empty textarea as well as will not allow only Spaces in textarea coz that looks empty too.

 var txt_msg = $("textarea").val();

 if (txt_msg.replace(/^\s+|\s+$/g, "").length == 0 || txt_msg=="") {
    return false;
  }