Quiz: TypeScript. Basic Types and Variable Declarations.

Descrição

Information Technology Quiz sobre Quiz: TypeScript. Basic Types and Variable Declarations., criado por Levon Badalian em 25-04-2017.
Levon Badalian
Quiz por Levon Badalian, atualizado more than 1 year ago
Levon Badalian
Criado por Levon Badalian mais de 7 anos atrás
15
0

Resumo de Recurso

Questão 1

Questão
Please select correct basic types that are available in TypeScript:
Responda
  • number, null, binary, string, boolean
  • string, boolean, enum, null, never
  • boolean, char, string, number
  • boolean, number, int, enum, void

Questão 2

Questão
Please select correct TypeScript variable declarations. Choose all that apply.
Responda
  • x = "My String";
  • let z = "My String";
  • let a: string = "My String";
  • let myAge: int = 25;
  • let c as string = "My String";
  • let b = ("My String" as string);

Questão 3

Questão
let variable declaration is accessible anywhere within their containing function, module, namespace, or global scope.
Responda
  • True
  • False

Questão 4

Questão
Please use drag and drop to make sure that variable sentence contains the following string: "Hello, my name is Joe Bloggs. I'm 44 years old." let myName = "Joe Bloggs"; let myAge: number = 44; let sentence: string = `Hello, my name is [blank_start]${myName}[blank_end]. I'm [blank_start]${myAge}[blank_end] years old.`;
Responda
  • {myName}
  • {$myName}
  • ${myName}
  • $myName
  • $myAge.toString()
  • ${myAge}
  • {$myAge.toString()}
  • {$myAge}

Questão 5

Questão
The following code will output in the console: enum make { Audi = 100, BMW = 200, Citroen=300, Ford, Holden, Hyundai, Jaguar, Kia, Lada } let myCarMake: make = make.Ford; console.info(myCarMake.toString());
Responda
  • Ford
  • 400
  • 301
  • syntax error

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