TypeScript for Beginners - Array Functions

The video tutorial covers various methods available for arrays in TypeScript, including tostring, join, slice, splice, push, and pop. It explains how to use these methods to manipulate arrays, such as converting arrays to strings, slicing parts of arrays, inserting and deleting elements, and performing stack operations. The tutorial provides examples and demonstrates the output in a web browser console.

What does the 'toString' method do when applied to an array?

• Returns a string representation of the array, separated by commas

• Removes duplicate elements from the array

• Converts the array into a JSON object

• Sorts the array in ascending order

How does the 'join' method differ from 'toString'?

• It sorts the array before converting it to a string

• It removes the first element of the array

• It allows specifying a custom separator for the elements

• It converts the array into a JSON object

What is the primary function of the 'slice' method?

• To add new elements to the array

• To extract a portion of the array without altering the original

• To modify the original array by removing elements

• To sort the array in descending order

When using the 'slice' method with two parameters, what do they represent?

• The indices to sort the array

• The number of elements to remove and add

• The start and end indices for slicing the array

• The elements to be replaced in the array

What is a key difference between 'slice' and 'splice' methods?

• 'Slice' modifies the original array, while 'splice' does not

• 'Splice' can insert elements, while 'slice' cannot

• 'Splice' is used for sorting arrays

• 'Slice' can only be used on strings, not arrays

How does the 'push' method affect an array?

• It converts the array into a string

• It sorts the array in ascending order

• It adds new elements to the end of the array

• It removes the first element of the array

What happens when the 'pop' method is used on an array?

• The first element is removed

• The last element is removed and returned

• The array is reversed

• A new element is added to the beginning