Learn if/else statements, switch expressions, and loops (for, while, do-while). Control flow is the skeleton of every program, determining which code executes based on conditions.

• If/else statements
• Switch expressions
• Loops (for, while, do-while)

const age = 20;
if (age >= 18) {
  console.log('Adult');
} else {
  console.log('Minor');
}
// ...

• If-else correctly identifies adults
• Loop executes 5 times

• Use === for comparison, not == (avoid type coercion)
• for loop: for (init; condition; update)
• while loops are useful when you don't know iteration count in advance

Learn if/else statements, switch expressions, and loops (for, while, do-while). Control flow is the skeleton of every program, determining which code executes based on conditions.

• If/else statements
• Switch expressions
• Loops (for, while, do-while)

const age = 20;
if (age >= 18) {
  console.log('Adult');
} else {
  console.log('Minor');
}
// ...

• If-else correctly identifies adults
• Loop executes 5 times

• Use === for comparison, not == (avoid type coercion)
• for loop: for (init; condition; update)
• while loops are useful when you don't know iteration count in advance