JS String

Question 0

string.length

Answer 0

Return’s string’s length

Question 1

string.constructor

Answer 1

Returns string’s constructor function

Question 2

string.prototype

Answer 2

Allows you to add properties and methods to an object

Question 3

string.charAt(index)

Answer 3

Returns character at the specified index

Question 4

string.charCodeAt(index)

Answer 4

Returns Unicode of character at specified index

Question 5

string.concat(string 1, string 2, …, stringX)

Answer 5

Joins two or more strings and returns new joined string.

Question 6

string.fromCharCode(n1, n2, …, nX)

Answer 6

Converts Unicode values to characters

Question 7

string.indexOf(searchvalue, start)

Answer 7

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

Question 8

string.lastIndexOf(searchvalue, start)

Answer 8

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

Question 9

string.localeCompare(compareString)

Answer 9

Compares two strings in current locale

Question 10

string.match(regexp)

Answer 10

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

Question 11

string.replace(searchvalue, newvalue)

Answer 11

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

Question 12

string.search(searchvalue)

Answer 12

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

Question 13

string.slice(start, end)

Answer 13

Extracts a part of a string and returns a new string

Question 14

string.split(separator, limit)

Answer 14

Splits a string into an array of substrings

Question 15

string.substr(start, length)

Answer 15

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

Question 16

string.toLocaleLowerCase()

Answer 16

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

Question 17

string.toUpperCase()

Answer 17

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

Question 18

string.toLowerCase()

Answer 18

Converts a string to lowercase letters

Question 19

string.toString()

Answer 19

Returns the value of a String object

Question 20

string.toUpperCase()

Answer 20

Converts a string to uppercase letters

Question 21

string.trim()

Answer 21

Removes whitespace from both ends of string

Question 22

string.valueOf()

Answer 22

Returns the primitive value of a string object