Display Your Name

Program to display your name using variables

BeginnerTopic: Basic Programs

JavaScript Display Your Name Program

This program helps you to learn the fundamental structure and syntax of JavaScript programming.

// Using a variable to store and display name
let name = "John Doe";
console.log("My name is:", name);

Output

My name is: John Doe

Understanding Display Your Name

This program demonstrates how to use variables in JavaScript. Variables are containers that store data values.

Variable Declaration

JavaScript uses let, const, or var to declare variables:

•let: Block-scoped, can be reassigned

•const: Block-scoped, cannot be reassigned (constant)

•var: Function-scoped, older syntax (avoid in modern code)

String Variables

Strings are sequences of characters enclosed in quotes:

•Single quotes: 'Hello'

•Double quotes: "Hello"

•Template literals: `Hello` (ES6)

Console.log with Multiple Arguments

console.log() can take multiple arguments separated by commas. Each argument is converted to a string and displayed with a space between them.

Example:

let firstName = "John";
let lastName = "Doe";
console.log("Name:", firstName, lastName);

// Output: Name: John Doe

Variable Naming Rules:

•Must start with letter, _, or $

•Can contain letters, digits, _, $

•Case-sensitive

•Cannot use reserved keywords

•Use camelCase for multi-word names

Let us now understand every line and the components of the above program.

Note: To write and run JavaScript programs, you need to set up the local environment on your computer. Refer to the complete article Setting up JavaScript Development Environment. If you do not want to set up the local environment on your computer, you can also use online IDE to write and run your JavaScript programs.

Practical Learning Notes for Display Your Name

This JavaScript program is part of the "Basic Programs" topic and is designed to help you build real problem-solving confidence, not just memorize syntax. Start by understanding the goal of the program in plain language, then trace the logic line by line with a custom input of your own. Once you can predict the output before running the code, your understanding becomes much stronger.

A reliable practice pattern is to run the original version first, then modify only one condition or variable at a time. Observe how that single change affects control flow and output. This deliberate style helps you understand loops, conditions, and data movement much faster than copying full solutions repeatedly.

For interview preparation, explain this solution in three layers: the high-level approach, the step-by-step execution, and the time-space tradeoff. If you can teach these three layers clearly, you are ready to solve close variations of this problem under time pressure.

User Input

Hello World