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JavaScript Essentials for Backend

bookWriting Your First JavaScript Code

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Now that you can run JavaScript on your computer, it's time to write simple code.

JavaScript allows you to store values and perform operations with them.

For example:


              
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const a = 5;
const b = 3;

const sum = a + b;

console.log(sum);
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Here, values are stored in variables. Then a calculation is performed, and the result is printed to the console.

You can also work with text:


              
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const name = "John";

console.log(name);
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JavaScript executes code line by line. Each instruction runs in order, and you can use console.log to see the result at any step.

This is the foundation of programming: storing data, processing it, and producing an output.

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What will this code output?

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