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flexpath-data-type-conversion-exercises

Exercise overview

The intention of this exercise is to give you more experience working with JavaScript's data types and converting values from one type to another.

Getting Started

  1. Using Visual Studio Code, open the folder flexpath-data-type-conversion-exercises wherever you saved it on your device.
  2. Your VS code file explorer window should look like this: File Explorer View
  3. Then open up the exercises.js file in the flexpath-data-type-conversion-exercises folder. Inside of this file we have provided exercises for you to complete, written in code comments. For each exercise, please code ONLY in the space between the comments // CODE IN THE OPEN LINES BELOW and // CODE IN THE OPEN LINES ABOVE
  4. To run your code for different exercises, you will update the exercise mentioned on line 20 of the file. To run a different exercise, change this line
  5. After changing that line, make sure to SAVE the file before running it.
  6. To run your code in exercises.js, you will update line 20 to run the exercise code you want to run and save the file. THEN, open a Terminal window in VS Code by going to your toolbar at the top of the page and selecting "Terminal" -> "New Terminal"
  7. Inside of this terminal, check that you have Node.js installed by running the command node -v. If your computer doesn't recognize that keyword, please go back and ensure you installed Node.js correctly.
  8. To run exercises.js you will then use the command node exercises.js in the terminal to run the file.

We have included a screen recording showing this process in the file run-exercise-2-recording.mp4 in this repo.

VIDEO DISCLAIMER - You will need to clone the repo to your local device before you can watch the .mp4 file since GitHub does not support watching it from here.

Exercise solutions are in the /solution folder

 

Summary of JavaScript Concepts Covered in These Exercises

  1. Data Types:

    • Primitive data types such as strings, numbers, booleans, null, and undefined.
    • Objects and arrays as non-primitive data types.
    • Differences between primitive and reference types.

  2. Type Conversion:

    • Converting between different data types (e.g., strings to numbers, numbers to booleans).
    • Using typeof to determine the type of a variable.
    • Handling NaN and checking for it using isNaN.

  3. String Manipulation:

    • Using template literals for string interpolation.
    • Common string methods like toUpperCase, toLowerCase, indexOf, and includes.

  4. Date and Time:

    • Working with the Date object and its methods, like toDateString and toLocaleDateString.
    • Formatting dates and times for different locales using Intl.DateTimeFormat.

  5. Number Formatting:

    • Using methods like Math.round, Math.ceil, and Math.floor.
    • Formatting numbers with toFixed and for different locales with Intl.NumberFormat.

  6. JSON:

    • Converting objects to JSON strings using JSON.stringify.
    • Parsing JSON strings back to objects using JSON.parse.
    • Handling JSON parsing errors.

  7. Boolean Logic:

    • Truthy and falsy values.
    • Converting values to booleans and understanding boolean contexts.

  8. Locale and Internationalization (i18n):

    • Using locale codes to format numbers, dates, and currency.
    • The concept of locales and how it affects string and number formatting.