Use the if statement to specify a block of JavaScript code to be executed if a condition is true. Syntax

The if/else statement executes a block of code if a specified condition is true. If the condition is false, another block of code can be executed. The if/else statement is a part of JavaScript's "Conditional" Statements, which are used to perform different actions based …

Mar 13, 2025 · In general, it is a good practice to always use block statements, especially in code involving nested if statements. js function checkValue(a, b) { if (a === 1) { if (b === 2) { console.log("a is 1 and b is 2"); } } else { console.log("a is not 1"); } }

The JavaScript if…else statement is used to execute/skip a block of code based on a condition. In this tutorial, we will learn about the JavaScript if…else statement with examples.

Apr 15, 2025 · JavaScript if-else statement executes a block of code based on a condition. If the condition evaluates to true, the code inside the "if" block executes; otherwise, the code inside the "else" block, if present, executes.

Nov 21, 2024 · Provides a concise way to write if-else statements in a single line. Allows for multiple conditions to be checked in a hierarchical manner. This table outlines the key characteristics and use cases of each type of conditional statement.

From basic if statement examples to complex nested conditional statements, this guide covers everything you need to write clean, efficient, and maintainable code.

Nov 20, 2023 · The syntax of an if statement in JavaScript is straightforward. It consists of the if keyword followed by a set of parentheses containing a condition. If the condition evaluates to true, the code inside the curly braces is executed. Here is the basic syntax: if (condition) { // Code to be executed if the condition is true}

Aug 9, 2021 · In this article, I will explain what an if...else statement is and provide code examples. We will also look at the conditional (ternary) operator which you can use as a shorthand for the if...else statement. What is an if...else statement in JavaScript?

Dec 7, 2022 · The if(...) statement evaluates a condition in parentheses and, if the result is true, executes a block of code. For example: let year = prompt('In which year was ECMAScript-2015 specification published?', ''); if (year == 2015) alert( 'You are right!'