String Methods

Question 1

charAt()

Answer 1

Returns the character at the specified index (position)

Question 2

charCodeAt()

Answer 2

Returns the Unicode of the character at the specified index

Question 3

concat()

Answer 3

Joins two or more strings, and returns a new joined strings

Question 4

endsWith()

Answer 4

Checks whether a string ends with specified string/characters

Question 5

fromCharCode()

Answer 5

Converts Unicode values to characters

Question 6

includes()

Answer 6

Checks whether a string contains the specified string/characters

Question 7

indexOf()

Answer 7

Returns the position of the first found occurrence of a specified value in a string

Question 8

lastIndexOf()

Answer 8

Returns the position of the last found occurrence of a specified value in a string

Question 9

localeCompare()

Answer 9

Compares two strings in the current locale

Question 10

match()

Answer 10

Searches a string for a match against a regular expression, and returns the matches

Question 11

repeat()

Answer 11

Returns a new string with a specified number of copies of an existing string

Question 12

replace()

Answer 12

Searches a string for a specified value, or a regular expression, and returns a new string where the specified values are replaced

Question 13

search()

Answer 13

Searches a string for a specified value, or regular expression, and returns the position of the match

Question 14

slice()

Answer 14

Extracts a part of a string and returns a new string

Question 15

split()

Answer 15

Splits a string into an array of substrings

Question 16

startsWith()

Answer 16

Checks whether a string begins with specified characters

Question 17

substr()

Answer 17

Extracts the characters from a string, beginning at a specified start position, and through the specified number of character

Question 18

substring()

Answer 18

Extracts the characters from a string, between two specified indices

Question 19

toLocaleLowerCase()

Answer 19

Converts a string to lowercase letters, according to the host’s locale

Question 20

toLocaleUpperCase()

Answer 20

Converts a string to uppercase letters, according to the host’s locale

Question 21

toLowerCase()

Answer 21

Converts a string to lowercase letters

Question 22

toString()

Answer 22

Returns the value of a String object

Question 23

toUpperCase()

Answer 23

Converts a string to uppercase letters

Question 24

trim()

Answer 24

Removes whitespace from both ends of a string

Question 25

valueOf()

Answer 25

Returns the primitive value of a String object