function with if javascript code example

Example 1: javascript if else

var age=20;
if (age < 18) {
	console.log("underage");
} else {
	console.log("let em in!");
}

Example 2: javascript if

const number = (Math.random() - 2.5) * 5;
if (number < 0) {
	console.log('Number is negative');
}
if (number = 0) {
	console.log('Number is zero');
}
if (number > 0) {
	console.log('Number is positive');
}