TypeScript for Beginners - Map in action

This video tutorial guides viewers through setting up a new project in Visual Studio Code, creating and initializing a map in TypeScript, and using various map methods such as get, set, and delete. It also covers compiling TypeScript code and testing it in the console. The tutorial concludes with a demonstration of map operations, including checking the size, clearing entries, and verifying the presence of keys.

What is the first step in setting up a new project in Visual Studio Code?

• Create a new project and call it 'map'

• Create a new HTML file

• Install a new plugin

• Open an existing project

How do you initialize a map with entries in JavaScript?

• Using curly braces

• Using a JSON object

• Using a for loop

• Using the new operator and passing entries in square brackets

Which method is used to retrieve a value from a map using a key?

• getValue

• fetch

• retrieve

• get

What method is used to add a new entry to a map?

• push

• set

• add

• insert

How can you check the number of entries in a map?

• Using the size property

• Using the entries method

• Using the count method

• Using the length property

Which method would you use to remove all entries from a map?

• deleteAll

• clear

• removeAll

• reset

What is the purpose of the 'has' method in a map?

• To retrieve a value from the map

• To add a new key-value pair to the map

• To verify if a specific key exists in the map

• To check if a map is empty