Else if

Using if and else statements, we can write a program that shows one greeting if hour < 12 is true and another if it's false.

let hour = 9;
if (hour < 12) {
 console.log("Good morning");
} else {
 console.log("Good night");
}

For a more specific condition, like if hour is not less than 12 but is less than 17, we can code else if (hour < 17) instead.

let hour = 14;
if (hour < 12) {
 console.log("Good morning");
} else if (hour < 17) {
 console.log("Good afternoon");
}

We call this an else if statement. This statement runs its code block if the condition before it is false and hour < 17 is true.

let hour = 14;
if (hour < 12) {
 console.log("Good morning");
} else if (hour < 17) {
 console.log("Good afternoon");
}