array methods

Question 1

What statement could you use to triggers this result?

Joins two or more arrays, and returns a copy of the joined arrays

Answer 1

concat()

Question 2

What statement could you use to triggers this result?

Copies array elements within the array, to and from specified positions

Answer 2

copyWithin()

Question 3

What statement could you use to triggers this result?

Checks if every element in an array pass a test

Answer 3

every()

Question 4

What statement could you use to triggers this result?

Answer 4

fill()

Question 5

What statement could you use to triggers this result?

Creates a new array with every element in an array that pass a test

Answer 5

filter()

Question 6

What statement could you use to triggers this result?

Returns the value of the first element in an array that pass a test

Answer 6

find()

Question 7

What statement could you use to triggers this result?

Returns the index of the first element in an array that pass a test

Answer 7

findIndex()

Question 8

What statement could you use to triggers this result?

Calls a function for each array element

Answer 8

forEach()

Question 9

What statement could you use to triggers this result?

Search the array for an element and returns its position

Answer 9

indexOf()

Question 10

What statement could you use to triggers this result?

Checks whether an object is an array

Answer 10

isArray()

Question 11

What statement could you use to triggers this result?

Joins all elements of an array into a string

Answer 11

join()

Question 12

What statement could you use to triggers this result?

Search the array for an element, starting at the end, and returns its position

Answer 12

lastIndexOf()

Question 13

What statement could you use to triggers this result?

Creates a new array with the result of calling a function for each array element

Answer 13

map()

Question 14

What statement could you use to triggers this result?

Removes the last element of an array, and returns that element

Answer 14

pop()

Question 15

What statement could you use to triggers this result?

Adds new elements to the end of an array, and returns the new length

Answer 15

push()

Question 16

What statement could you use to triggers this result?

Reduce the values of an array to a single value (going left-to-right)

Answer 16

reduce()

https://www.w3schools.com/jsref/jsref_reduce.asp

Question 17

What function could you use to triggers this result?

Reduce the values of an array to a single value (going right-to-left)

Answer 17

reduceRight()

Question 18

What function could you use to trigger this result?

Reverses the order of the elements in an array

Answer 18

reverse()

Question 19

What function could you use to trigger this result?

Removes the first element of an array, and returns that element

Answer 19

shift()

Question 20

What function could you use to trigger this result?

Selects a part of an array, and returns the new array

Answer 20

slice()

Question 21

What function could you use to trigger this result?

Checks if any of the elements in an array pass a test

Answer 21

some()

Question 22

What function could you use to trigger this result?

Sorts the elements of an array

Answer 22

sort()

Question 23

What function could you use to trigger this result?

Adds/Removes elements from an array

Answer 23

splice()

Question 24

What function could you use to trigger this result?

Converts an array to a string, and returns the result

Answer 24

toString()

Question 25

What function could you use to trigger this result?

Adds new elements to the beginning of an array, and returns the new length

Answer 25

unshift()

Question 26

What function could you use to trigger this result?

Returns the primitive value of an array

Answer 26

valueOf()