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JavaScript from Beginner to Professional

You're reading from  JavaScript from Beginner to Professional

Product type Book
Published in Dec 2021
Publisher Packt
ISBN-13 9781800562523
Pages 546 pages
Edition 1st Edition
Languages
Authors (3):
Laurence Lars Svekis Laurence Lars Svekis
Profile icon Laurence Lars Svekis
Maaike van Putten Maaike van Putten
Profile icon Maaike van Putten
Codestars By Rob Percival Codestars By Rob Percival
Profile icon Codestars By Rob Percival
View More author details

Table of Contents (19) Chapters

Preface 1. Getting Started with JavaScript 2. JavaScript Essentials 3. JavaScript Multiple Values 4. Logic Statements 5. Loops 6. Functions 7. Classes 8. Built-In JavaScript Methods 9. The Document Object Model 10. Dynamic Element Manipulation Using the DOM 11. Interactive Content and Event Listeners 12. Intermediate JavaScript 13. Concurrency 14. HTML5, Canvas, and JavaScript 15. Next Steps 16. Other Books You May Enjoy
17. Index
Appendix – Practice Exercise, Project, and Self-Check Quiz Answers

Chapter project

Password checker

Using an array of allowed passwords, this exercise will create an application to check if one of these password string values exists in an array that lists all the accepted passwords. Set a Promise to check if the password is valid, and upon the result either resolve with the status of true or reject with the status of false. Return the check results.

  1. Create an array of allowed passwords.
  2. Create a login function that will check if the argument is a value that is included in the passwords array. You can use indexof() or the includes() method to check the array for a value and return a Boolean value of the result.

    The includes() method is an array method that can check whether a certain value is included among the items in the array. It will return a Boolean value depending on the result.

  3. Add a function that returns a Promise. Using resolve and reject, return a JavaScript object with the Boolean...
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