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* fix : add URL to a missing link In Relevant Links (line 54), the first URL text 'Using typeof' was missing a href value. I fixed it by adding the link to a FreeCodeCamp's Javascript Debugging curriculum that introduces typeof method. ( Debugging: Use typeof to Check the Type of a Variable : https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/debugging/use-typeof-to-check-the-type-of-a-variable) * I'm a first-time open source contributor. If you have any feedback about my pull request, feel free to share it with me. * Update guide/english/certifications/javascript-algorithms-and-data-structures/basic-algorithm-scripting/boo-who/index.md Remove the first bullet instead of adding the link (suggested by RandellDawson) Co-Authored-By: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>
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title
| title |
|---|
| Boo Who |
Remember to use Read-Search-Ask if you get stuck. Try to pair program 
and write your own code 
Problem Explanation:
This program is very simple, the trick is to understand what a boolean primitive is. The programs requires a true or false answer.
Relevant Links
Hint: 1
- You will need to check for the type of the parameter to see if it is a boolean.
try to solve the problem now
Hint: 2
- To check for the type of a parameter, you can use
typeof.
try to solve the problem now
Hint: 3
- Since you must return true or false you can use if statements or just have it return the boolean used for the if statement.
try to solve the problem now
Spoiler Alert!
Solution ahead!
Basic Code Solution:
function booWho(bool) {
return typeof bool === 'boolean';
}
// test here
booWho(null);
Code Explanation:
Uses the operator typeof to check if the variable is a boolean. If it is, it will return true. Otherwise, if it is any other type it will return false.
Relevant Links
NOTES FOR CONTRIBUTIONS:
DO NOT add solutions that are similar to any existing solutions. If you think it is similar but better, then try to merge (or replace) the existing similar solution.- Add an explanation of your solution.
- Categorize the solution in one of the following categories — Basic, Intermediate and Advanced.
