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    Best JavaScript Examples You Must Try in 2026 | Simplilearn

    Learn what are the best javascript examples you must try in 2026. Read on to know how JavaScript enhances the user experience of the web page. Click here!

    Simplilearn
    Node.js — Run JavaScript Everywhere

    Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.

    Node.js
  1. JavaScript is a versatile programming language primarily used for creating dynamic and interactive web applications. Below is a concise guide to get started with JavaScript.

    1. Setting Up Your Environment

    • Install Node.js from nodejs.org to run JavaScript outside the browser.

    • Verify Node.js installation:

    node -v
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    2. Writing Your First JavaScript Program

    Create a file named index.js and write:

    console.log("Hello, World!");
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    Run it using Node.js:

    node index.js
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    3. Core Concepts

    Variables

    Use let, const, or var to declare variables:

    let name = "John";
    const age = 25;
    var isStudent = true;
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    Data Types

    JavaScript supports:

    • Strings: "Hello"

    • Numbers: 42

    • Booleans: true, false

    • Arrays: [1, 2, 3]

    • Objects: { key: "value" }

    Functions

    Reusable blocks of code:

    function greet(name) {
    return `Hello, ${name}!`;
    }
    console.log(greet("Alice"));
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    Control Flow

    Conditional statements and loops:

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  3. Best JavaScript Examples You Must Try in 2026 | Simplilearn

    5 days ago · Learn what are the best javascript examples you must try in 2026. Read on to know how JavaScript enhances the user experience of the web page. Click here!

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