Question

I know this is kind of an odd question, but: Inside a textarea, how can I know if the user is pressing enter (e.keycode==13) on an empty line on the keydown event?

I have to trigger a specific sync function everytime the user presses enter except if the user is just adding new lines for fun (calling the sync function in those cases, would be a terrible waste of resources).

Answer 1

Found a solution!

$('#q').keydown(function(e){
    if(e.keyCode == 13) {
        if($(this).val()) {
            if($(this).val().substr($(this).getCursorPosition()-1,1).length) {
                //sync function here!
            } else {
                //user is pressing enter on empty line
            }
        }
    }
});

new function(a){a.fn.getCursorPosition=function(){var b=0;var c=a(this).get(0);if(document.selection){c.focus();var d=document.selection.createRange();var e=document.selection.createRange().text.length;d.moveStart("character",-c.value.length);b=d.text.length-e}else if(c.selectionStart||c.selectionStart=="0")b=c.selectionStart;return b}}(jQuery);