Conditional Rendering Basics

React allows you to render different UI based on conditions. Since JSX is JavaScript, you can use standard JavaScript conditional logic.

If Statements

The simplest way to conditionally render is with if statements:

Ternary Operator

For inline conditions, use the ternary operator:

Logical AND (&&) Operator

Show something only when a condition is true:

Avoiding Common Pitfalls

Exercise: Login Status

Exercise: Status Badge

Exercise: Conditional Feature

Key Takeaways

1. if statements - Best for complex logic or early returns
2. Ternary operator - Best for inline either/or choices
3. && operator - Best for "show only if true" cases
4. Numbers with && - Always use explicit comparison (count > 0)
5. Keep it simple - Extract complex conditions to variables