* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
1.9 KiB
id, title, challengeType, videoUrl, forumTopicId, dashedName
id | title | challengeType | videoUrl | forumTopicId | dashedName |
---|---|---|---|---|---|
599a789b454f2bbd91a3ff4d | Practice comparing different values | 1 | https://scrimba.com/c/cm8PqCa | 301174 | practice-comparing-different-values |
--description--
In the last two challenges, we learned about the equality operator (==
) and the strict equality operator (===
). Let's do a quick review and practice using these operators some more.
If the values being compared are not of the same type, the equality operator will perform a type conversion, and then evaluate the values. However, the strict equality operator will compare both the data type and value as-is, without converting one type to the other.
Examples
3 == '3' // returns true because JavaScript performs type conversion from string to number
3 === '3' // returns false because the types are different and type conversion is not performed
Note
In JavaScript, you can determine the type of a variable or a value with the typeof
operator, as follows:
typeof 3 // returns 'number'
typeof '3' // returns 'string'
--instructions--
The compareEquality
function in the editor compares two values using the equality operator. Modify the function so that it returns "Equal" only when the values are strictly equal.
--hints--
compareEquality(10, "10")
should return "Not Equal"
assert(compareEquality(10, '10') === 'Not Equal');
compareEquality("20", 20)
should return "Not Equal"
assert(compareEquality('20', 20) === 'Not Equal');
You should use the ===
operator
assert(code.match(/===/g));
--seed--
--seed-contents--
// Setup
function compareEquality(a, b) {
if (a == b) { // Change this line
return "Equal";
}
return "Not Equal";
}
compareEquality(10, "10");
--solutions--
function compareEquality(a,b) {
if (a === b) {
return "Equal";
}
return "Not Equal";
}