var today = new Date();
var time = today.getHours();
var greet;
if (time > 0 && time <= 12) {
greet = 'text 1';
} else if (time > 12 && time <= 18) {
greet = 'Good afternoon Sir!';
} else if (time > 18 && time <= 24) {
greet = 'Good evening babe!';
} else {
greet = 'yo shits broken yo!';
}
var show = document.getElementById('message');
show.textContent = greet;