JavaScript Numbers: Properties and Methods

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In this Guided Project, you will:

Declare and use a variable with a number data type in JavaScript.

Write code using JavaScript number properties.

Write code using JavaScript number methods.

2 hours
Beginner
No download needed
Split-screen video
English
Desktop only

In this beginning-level project you will work with the number data type, and with properties and methods that apply to numbers. You will use Notepad++ to write JavaScript code and the Chrome browser to view your results. For a JavaScript programmer, understanding how to deal with variables that contain numbers is a prerequisite for any kind of number processing – even something as simple as accepting a number from a prompt() method and using it in a calculation. Note: This course works best for learners who are based in the North America region. We’re currently working on providing the same experience in other regions.

Skills you will develop

  • isNaN()

  • Number()

  • Javascript Methods

  • toString()

  • JavaScript

Learn step-by-step

In a video that plays in a split-screen with your work area, your instructor will walk you through these steps:

  1. Write JavaScript code to declare a variable and then assign a number value to that variable.

  2. Use the Number() method to convert a value in a string variable to a number.

  3. Write JavaScript code to convert a number variable into a string variable using the toString() method.

  4. Use methods to check whether the value of a variable is an integer, or not a number at all.

  5. Experiment with number properties in JavaScript code.

How Guided Projects work

Your workspace is a cloud desktop right in your browser, no download required

In a split-screen video, your instructor guides you step-by-step

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Yes, everything you need to complete your Guided Project will be available in a cloud desktop that is available in your browser.

You'll learn by doing through completing tasks in a split-screen environment directly in your browser. On the left side of the screen, you'll complete the task in your workspace. On the right side of the screen, you'll watch an instructor walk you through the project, step-by-step.