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feat(curriculum): javascript regular expressions quiz (#56543)
This commit is contained in:
EggSaled
+128
-100
@@ -17,439 +17,467 @@ Answer all of the questions below correctly to pass the quiz.
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#### --text--
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Placeholder question
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Which of the following is NOT a regular expression?
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#### --distractors--
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Placeholder distractor 1
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```js
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/hello, world!/i
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```
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---
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Placeholder distractor 2
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```js
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new RegExp("hello, world!")
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```
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---
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Placeholder distractor 3
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```js
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/(?:^|\s)hello[,]?\sworld[!]?(?:$|\s)/i
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```
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#### --answer--
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Placeholder answer
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```js
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"hello, world!"
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```
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### --question--
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#### --text--
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Placeholder question
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Which `RegExp` contains the same pattern as the regular expression `/f[o0]{2} b[a4@]r/i`?
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#### --distractors--
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Placeholder distractor 1
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```js
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new RegExp("/f[o0]{2} b[a4@]r/", "i")
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```
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---
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Placeholder distractor 2
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```js
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new RegExp("f[o0]{2} b[a4@]r", "g")
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```
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---
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Placeholder distractor 3
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```js
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new RegExp("f[o0]{2} b[a4@]r")
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```
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#### --answer--
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Placeholder answer
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```js
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new RegExp("f[o0]{2} b[a4@]r", "i")
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```
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### --question--
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#### --text--
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Placeholder question
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What is the return type for the regular expression method `test`?
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#### --distractors--
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Placeholder distractor 1
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An array of strings that matched the regular expression.
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---
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Placeholder distractor 2
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An object containing information about the (sub)string the regular expression matched.
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---
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Placeholder distractor 3
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Null, the method `test` only validates if the given regular expression is valid.
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#### --answer--
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Placeholder answer
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A boolean indicating whether the string matches the regular expression.
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### --question--
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#### --text--
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Placeholder question
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What happens when `match` is used?
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#### --distractors--
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Placeholder distractor 1
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`match` searches for any strings that match the given regular expression, and returns ALL matches as an array.
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---
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Placeholder distractor 2
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`match` searches for the first full match, and returns the starting index of that match.
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---
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Placeholder distractor 3
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`match` searches for the first full match, and returns a boolean indicating whether or not a match was found.
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#### --answer--
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Placeholder answer
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`match` searches for the first full match, and returns an array containing that first match.
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### --question--
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#### --text--
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Placeholder question
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Which is the best use case for `test`?
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#### --distractors--
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Placeholder distractor 1
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`test` should be used for verifying a given regular expression.
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---
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Placeholder distractor 2
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`test` should be used for detailed information about a string match, such as the length of the matched string.
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---
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Placeholder distractor 3
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`test` should be used to extract all matches from a given string.
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#### --answer--
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Placeholder answer
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`test` should be used to check if a given string matches the regular expression.
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### --question--
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#### --text--
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Placeholder question
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What is the purpose of using `replace`?
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#### --distractors--
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Placeholder distractor 1
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`replace` is used to replace the current regular expression with a new regular expression.
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---
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Placeholder distractor 2
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When given an index and a string, `replace` replaces the character at the specified index with the string provided.
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---
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Placeholder distractor 3
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`replace` is a helper method for replacing an entire string with another string.
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#### --answer--
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Placeholder answer
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`replace` replaces a matched string with a given replacement string.
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### --question--
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#### --text--
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Placeholder question
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What is the difference between `match` and `matchAll`?
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#### --distractors--
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Placeholder distractor 1
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`match` is restricted to only one match, while `matchAll` captures all possible matches.
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---
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Placeholder distractor 2
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`match` returns a boolean indicating whether a match is found, while `matchAll` returns a number representing the amount of matches found.
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---
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Placeholder distractor 3
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`match` returns a number indicating the starting index of the first match found, while `matchAll` returns an array of numbers containing indices where a match was found.
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#### --answer--
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Placeholder answer
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`match` returns an array of strings that match, while `matchAll` returns an iterator object of all matches found.
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### --question--
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#### --text--
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Placeholder question
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Which of the following is the correct use of `replaceAll`?
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#### --distractors--
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Placeholder distractor 1
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```js
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foo.replaceAll(/foobar/, "fizzbuzz")
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```
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---
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Placeholder distractor 2
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```js
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foo.replaceAll(/foobar/i, "fizzbuzz")
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```
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---
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Placeholder distractor 3
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```js
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foo.replaceAll(/foobar/gi, /fizzbuzz/)
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```
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#### --answer--
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Placeholder answer
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```js
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foo.replaceAll(/foobar/g, "fizzbuzz")
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```
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### --question--
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#### --text--
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Placeholder question
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Which of the following character classes is equivalent to the regular expression `/[a-zA-Z0-9_]/`?
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#### --distractors--
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Placeholder distractor 1
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`\d`
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---
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Placeholder distractor 2
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`\s`
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---
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Placeholder distractor 3
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`\n`
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#### --answer--
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Placeholder answer
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`\w`
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### --question--
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#### --text--
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Placeholder question
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Which of the following character classes is best used in a regular expression that finds phone numbers?
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#### --distractors--
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Placeholder distractor 1
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`\w`
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---
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Placeholder distractor 2
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`\s`
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---
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Placeholder distractor 3
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`\D`
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#### --answer--
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Placeholder answer
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`\d`
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### --question--
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#### --text--
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Placeholder question
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What happens when a lookahead `(?=)` is used in a regular expression?
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#### --distractors--
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Placeholder distractor 1
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The lookahead will assert to the left of the string, verifying that the sub-pattern IS present.
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---
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Placeholder distractor 2
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A lookahead is an alternate regular expression pattern used when the main pattern fails to match.
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---
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Placeholder distractor 3
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The lookahead will assert to the right of the string, verifying that the sub-pattern IS NOT present.
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#### --answer--
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Placeholder answer
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A lookahead asserts to the right of the string, verifying that the sub-pattern IS present.
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### --question--
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#### --text--
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Placeholder question
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When making a regular expression, where should a lookbehind `(?<=)` be placed?
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#### --distractors--
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Placeholder distractor 1
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The lookbehind can be placed anywhere in the regular expression.
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---
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Placeholder distractor 2
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The lookbehind should be placed to the right of the main pattern of the regular expression.
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---
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Placeholder distractor 3
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The lookbehind should include the main pattern of the regular expression.
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#### --answer--
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Placeholder answer
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The lookbehind should be placed to the left of the main pattern of the regular expression.
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### --question--
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#### --text--
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Placeholder question
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Which quantifier matches preceding element zero or one times?
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#### --distractors--
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Placeholder distractor 1
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`+`
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---
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Placeholder distractor 2
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`*`
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---
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Placeholder distractor 3
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`a{0,}`
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#### --answer--
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Placeholder answer
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`?`
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### --question--
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#### --text--
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Placeholder question
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Which of the following regular expressions allows numbers between 0 and 999,999?
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#### --distractors--
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Placeholder distractor 1
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`/^\d{6}$/`
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---
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Placeholder distractor 2
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`/^\d{0, 999999}$/`
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---
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Placeholder distractor 3
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`/^\d+$/`
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#### --answer--
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Placeholder answer
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`/^\d{1,6}$/`
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### --question--
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#### --text--
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Placeholder question
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Which of the following statements is true about the `[]` character class?
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#### --distractors--
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Placeholder distractor 1
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The `[]` character class is a set of characters to be removed from the match.
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---
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Placeholder distractor 2
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The `[]` character class can define a set of characters to match without the need to escape any special characters.
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---
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Placeholder distractor 3
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The `[]` character class represents a set of characters in Unicode form.
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#### --answer--
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Placeholder answer
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The `[]` character class can define a custom set of characters to match.
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### --question--
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#### --text--
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Placeholder question
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Which of the following character classes correctly matches the uppercase alphabet?
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#### --distractors--
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Placeholder distractor 1
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`\w`
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---
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Placeholder distractor 2
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`[a-z]`
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---
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Placeholder distractor 3
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`[AZ]`
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#### --answer--
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Placeholder answer
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`[A-Z]`
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### --question--
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#### --text--
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Placeholder question
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What happens when a capturing group `(...)` is used in a regular expression?
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#### --distractors--
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Placeholder distractor 1
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The capturing group is immediately evaluated, regardless of where it is located in the regular expression.
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---
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Placeholder distractor 2
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The capturing group attempts to match using the given subpattern, and continues without memorizing the result.
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---
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Placeholder distractor 3
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The capturing group is a prioritized subpattern, which will immediately return when a match is found for the subpattern.
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#### --answer--
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Placeholder answer
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The capturing group attempts to match using the given subpattern, and continues with the result in memory.
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### --question--
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#### --text--
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Placeholder question
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What happens when a non-capturing group `(?:...)` is used in a regular expression?
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#### --distractors--
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Placeholder distractor 1
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The non-capturing group attempts to match using the given subpattern, and continues with the result in memory.
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---
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Placeholder distractor 2
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The non-capturing group immediately terminates when it finds a match for the given subpattern.
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---
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Placeholder distractor 3
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The non-capturing group is considered an optional match, so only a successful match is added on the result.
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#### --answer--
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Placeholder answer
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The non-capturing group attempts to match using the given subpattern, and continues without memorizing the result.
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### --question--
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#### --text--
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Placeholder question
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What happens when a backreference (`\1`, `\2`, etc.) is used in a regular expression?
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#### --distractors--
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Placeholder distractor 1
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The backreference imports a different regular expression as a sub-pattern.
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---
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Placeholder distractor 2
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The backreference copies the sub-pattern used in a previous capturing group.
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---
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Placeholder distractor 3
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The backreference implicitly includes the match from a previous capture group to prevent the regular expression from failing.
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#### --answer--
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Placeholder answer
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The backreference includes the result from a capture group as part of a pattern/sub-pattern to match.
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### --question--
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#### --text--
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Placeholder question
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Which part of the following regular expression causes errors?
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```js
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/(?:Expense|Asset) \$\d+\.\d{2} \1 \$\d+\.\d{2}/
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```
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#### --distractors--
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Placeholder distractor 1
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The regular expression does not make use of the whitespace character class `\s`.
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---
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Placeholder distractor 2
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The regular expression allows 1 or more numbers after the $.
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---
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Placeholder distractor 3
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The regular expression escapes the `.` and `$`.
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#### --answer--
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Placeholder answer
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The regular expression is attempting to use a backreference to a non-capturing group.
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Reference in New Issue
Block a user