If/Else Statements

The if statement executes a block of code if a specified condition is true. Optionally, use else or else if to handle other conditions.

let age = 20;

if (age >= 18) {
  console.log('You are an adult');
} else {
  console.log('You are a minor');
}

You can also chain multiple conditions:

if (score >= 90) {
  console.log('A');
} else if (score >= 80) {
  console.log('B');
} else {
  console.log('Needs improvement');
}

Be sure to use === for strict equality comparisons.