JavaScript Conditional Statements.

Conditional statements in JavaScript are essential for controlling the flow of a program based on specified conditions. They enable developers to execute different blocks of code depending on whether a certain condition is true or false.

if Statement

The if statement is used to execute a block of code if a specified condition is true.

let a = 20;
let b = 10;

if (a > b) {
  console.log("a is greater than b");
}

if-else Statement

The if-else statement allows you to execute one block of code if the condition is true and another block if it is false.

if (a > b) {
  console.log("a is greater than b");
} else {
  console.log("a is not greater than b");
}

if-else if-else Statement

The if-else if-else statement is used when there are multiple conditions to check.

if (a > b) {
  console.log("a is greater than b");
} else if (a < b) {
  console.log("a is less than b");
} else {
  console.log("a is equal to b");
}

Nested Conditional Statements

You can nest conditional statements to handle more complex scenarios.

let c = 5;

if (a > b) {
  if (a > c) {
    console.log("a is the greatest");
  } else {
    console.log("c is the greatest");
  }
} else {
  console.log("a is not greater than b");
}

Ternary Operator

The ternary operator provides a concise way to write conditional statements.

let result = (a > b) ? "a is greater than b" : "a is not greater than b";
console.log(result);

Truthy and Falsy Values

JavaScript evaluates conditions based on truthy and falsy values. Understand the concept to write effective conditional statements.

let value = "Hello";

if (value) {
  console.log("Truthy"); // Output: Truthy
} else {
  console.log("Falsy");
}

JavaScript Conditional Statements

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JavaScript Conditional Statements.

if Statement

if-else Statement

if-else if-else Statement

Nested Conditional Statements

Ternary Operator

Truthy and Falsy Values

Command Palette

Comments

JavaScript for beginners 2024

Understanding Switch Statements in JavaScript

More from this blog

JavaScript Conditional Statements.

if Statement

if-else Statement

if-else if-else Statement

Nested Conditional Statements

Ternary Operator

Truthy and Falsy Values