Typescript Basics

How would you describe Typescript as a programming language?

• Strongly Typed

• Weakly Typed

• Dynamically Typed

• Statistically Typed

Which file extension is commonly used for TypeScript files?

• .js

• .tx

• .ts

• .tys

TypeScript code is ultimately compiled into which language?

• C++

• Java

• Python

• JavaScript

What command correctly represents build/compiling Typescript to JavaScript

• build

• tsc

• node tsc

• build tsc

const student = 'Usman';

The implicit type here is a?

• Number

• String

• Boolean

• Object

Which of the following correctly define an explicit type?

• let a = true

• let a: boolean = true

• let a = true:bolean

• let boolan: a = true

At what time does checks in Typescripts occur?

• Run time

• Compile time

• Code time

• Dev Time

Rasheed wants to create an array of only strings, which syntax should he use?

• names = [ ]

• names: any = [ ]

• names: string = [ ]

• names: string[] = [ ]

Using this function:

const addNum = (num1: number, num2: number, num4?:number, num3: number = 10) => {}

num3 represents?

• Optional parameters

• Default parameters

• Return type

• None of the options

Using this function:

const addNum = (num1: number, num2: number, num4?:number, num3: number = 10) => {}

num4 represents?

• Optional parameters

• Default parameters

• Return type

• None of the options