TypeScript for Beginners - Using Default Values

The video tutorial explains how to assign default values to function parameters using the equal sign. It demonstrates that if a parameter is not provided, the default value is used, eliminating the need to check for undefined values. The tutorial shows how to test this by refreshing a web browser to see the default role as 'normal user' and how passing a different role, like 'admin', overrides the default. This approach simplifies code by reducing conditional checks.

What is the purpose of assigning a default value to parameters?

How does the default value affect the function when a parameter is not passed?

What happens if a role value is passed when invoking the function?

Explain the significance of the statement 'the default value will be used only if you don't pass in a parameter value'.

What is the default value assigned to the role type in the discussed context?