Initialize your variables first, then compare using if statement and assign new values where necessary . var a = "red"; var b; if(a=="red"){ b="hot"; } else{ b="cold"; }

The if/else statement is a part of JavaScript's "Conditional" Statements, which are used to perform different actions based on different conditions. In JavaScript we have the following conditional …

Mar 13, 2025 · The var statement declares function-scoped or globally-scoped variables, optionally initializing each to a value.

Feb 10, 2025 · The var keyword is used to declare variables in JavaScript. It has been part of the language since its inception. When a variable is declared using var, it is function-scoped or …

Method 1: If the condition evaluates to true, the value on the left side of the column would be assigned to the variable. If the condition evaluates to false the condition on the right will be …

Conditional statements control behavior in JavaScript and determine whether or not pieces of code can run. There are multiple different types of conditionals in JavaScript including: “If” …

Summary: In this tutorial, you will learn how to use the JavaScript if...else...if statement to check multiple conditions and execute the corresponding block if a condition is true. The if an if…else …

Declare many variables in one statement. Start the statement with var and separate the variables by comma:

Nov 13, 2022 · With var, we can redeclare a variable any number of times. If we use var with an already-declared variable, it’s just ignored: var declarations are processed when the function …

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.