Mastering JavaScript Array Methods

What method would you use to add one or more elements to the end of an array?

• Use the 'unshift' method.

• Use the 'shift' method.

• Use the 'push' method.

• Use the 'splice' method.

Which method creates a new array with all elements that pass the test implemented by the provided function?

• map

• reduce

• forEach

• filter

How do you remove the last element from an array?

• Use array.delete() in Python

• Use array.pop() in JavaScript or array.pop() in Python.

• Use array.shift() in both JavaScript and Python

• Use array.remove() in JavaScript

What method would you use to find the index of a specific element in an array?

• Use the 'find' method in JavaScript

• Use the 'search' method in Python

• Use the 'locate' method in JavaScript

• Use the 'indexOf' method in JavaScript or the 'index' method in Python.

Which method can be used to combine two or more arrays?

• arrayJoin() function

• concat() or '+' operator

• combineArrays() method

• merge() function

What is the purpose of the `map` method in JavaScript arrays?

• The `map` method merges two arrays into one.

• The `map` method sorts the elements of an array in ascending order.

• The purpose of the `map` method is to transform each element of an array and return a new array with the transformed elements.

• The `map` method filters elements of an array based on a condition.

How can you reverse the order of elements in an array?

• Remove all elements and add them back in the original order.

• Use the 'reverse()' method or iterate from the end to the beginning.

• Use the 'shuffle()' method to randomize the array.

• Use the 'sort()' method to arrange elements alphabetically.

What method would you use to sort the elements of an array?

• Use a random number generator.

• Apply a filter function to remove duplicates.

• Use a sorting algorithm or built-in sort function.

• Reverse the array elements.

How do you create a shallow copy of an array?

• Use the spread operator, slice method, or Array.from method.

• Use the filter method

• Use the push method

• Use the concat method

Which method removes the first element from an array?

• shift

• remove

• pop

• slice