Control Flow in JavaScript

Control flow allows you to decide which pieces of code run based on certain conditions.

if Statement

The if statement runs code only if a condition is true.
Example:

let age = 18;
if (age >= 18) { 
	console.log("You are an adult.");
    }

if...else Statement

else runs if the if condition is false.
Example:

let time = 20;
if (time < 18) { 
	console.log("Good day.");
} else { 
	console.log("Good evening.");
}

if...else if...else Chain

Allows multiple conditions to be checked in sequence.
Example:

let score = 75;
if (score >= 90) { 
	console.log("A grade");
} else if (score >= 75) { 
	console.log("B grade");
} else { 
	console.log("C grade");
}

switch Statement

Used to select one of many code blocks based on a value.
Example:

let fruit = "apple";
switch (fruit) { 
	case "apple":  
    	console.log("Apples are red or green.");  
    	break; 
    case "banana":  
    	console.log("Bananas are yellow.");  
        break; 
    default:  
    	console.log("Unknown fruit.");
}

‍