Text Counter with word limit

Text Counter with word limit

let max = $('.max').val();

$('.text').keydown(count);

function count(event) {
    let len = $('.text').val().split(/[\s]+/);
    if (len.length > max) {
        if ( event.keyCode == 46 || event.keyCode == 8 ) {// Allow backspace and delete buttons
        } else if (event.keyCode < 48 || event.keyCode > 57 ) {//all other buttons
            event.preventDefault();
        }
    }
    let wordsLeft = (max) - len.length;
    $('.counter').val(wordsLeft);
}