FAQ: Variables - Variables

Frequently Asked Questions JavaScript FAQ
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This community-built FAQ covers the “Variables” exercise from the lesson "Variables ".

Paths and Courses
This exercise can be found in the following Codecademy content:

Web Development

Introduction To JavaScript

FAQs on the exercise Variables

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the Variables lesson mentioned that the value of variables is stored in “memory” - where exactly is the info stored tho? on the users computer? the server hosting the program/website?

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The memory is part of a computer, specifically the computer that the program is running on. There are many different parts of the memory and names for these parts (main memory, RAM, the stack, the heap, registers, chaches, etc)

If you are running a program on your computer, it is stored there. If there is another server running the program, the variables could be stored on that server and the output is sent to you

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6

What’s the difference between variables and objects?

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7

There is a mistake, the boxes shown on page 1 do not show the names, but these are shown in the follow along video though.

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Variable

  • A variable is a container or a named storage location in a program that holds a value.
  • Variables are declared using keywords like var, let, or const in JavaScript.
    As such:
let x = 5;
console.log(x) // 5

The value stored in a variable can be changed or reassigned during the execution of the program.

x = 6;
console.log(x) // 6

Objects

  • An object is a complex data type that allows you to store and organize data in key-value pairs.
  • Objects are declared using curly braces {} in JavaScript, and key-value pairs define their properties.
  • Example:
let person = {
  name: 'John',
  age: 30,
  gender: 'male'
};
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