02. Conditionals & Logic
Explanation
Conditional statements like `if`, `else if`, and `else` allow your code to make decisions and execute different paths.
They rely on boolean expressions that evaluate to either true or false using comparison operators like `>` or `===`.
Logical operators like `&&` (AND), `||` (OR), and `!` (NOT) allow you to combine multiple conditions into complex logic.
Clean conditional logic is key to building software that handles various edge cases and user inputs gracefully.
Nested conditionals should be avoided when possible by using "early returns" or switch statements to keep code readable.
Mastering control flow is what turns a static script into a truly dynamic and interactive application.
Example
if (a > b) { ... }Exercise Task
Create an 'age' variable. Write an if/else statement that logs 'Welcome' if age is 18 or older, and 'Access Denied' otherwise.
script.js
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const age = 20;
// Write logic here
Console
Click "Run" to execute your code...