JavaScript Strings 2

Question 1

What does `String.prototype.padStart()` do?

Accepted Answer

Pads the beginning of a string with a specified string until it reaches a target length

Answer

`padStart(targetLength, padString)` pads the beginning of the current string with a given string (repeated if needed) so that the resulting string reaches a given length.

Question 2

What does `String.prototype.repeat()` do?

Accepted Answer

Returns a new string consisting of the original string repeated a specified number of times

Answer

`repeat(count)` constructs and returns a new string containing the specified number of copies of the string it is called on, concatenated together.

Question 3

What does `String.prototype.matchAll()` return?

Accepted Answer

An iterator of all regex match results (including capture groups)

Answer

`matchAll(regexp)` returns an iterator of all results matching the regex (which must have the `g` flag), including capture groups. Unlike `match()`, each result includes full match information.

Question 4

What does `String.prototype.startsWith()` do?

Accepted Answer

Determines whether a string begins with the characters of a specified string

Answer

`startsWith(searchString, position)` returns `true` if the string begins with the specified characters (starting at the given position, default 0), otherwise `false`. It's case-sensitive.

Question 5

What does the `String.raw` tagged template do?

Accepted Answer

Returns the raw string form of a template literal, without processing escape sequences

Answer

`String.raw` is a tag function for template literals that returns a string where escape sequences (like `
`, `	`) are NOT processed — you get the raw characters instead.

JavaScript Practice Test

JavaScript Practice Test

JavaScript Strings 2