TypeScript perguntas e respostas de entrevista
Diferencas relacionadas
Pergunta 21. What are type guards in TypeScript?
Type guards are expressions that help TypeScript narrow down the type of a variable within a certain code block.
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Pergunta 22. How do you declare and use a class in TypeScript?
Classes in TypeScript are declared using the 'class' keyword, and objects are created using the 'new' keyword.
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Pergunta 23. What is the 'for...of' loop in TypeScript?
The 'for...of' loop in TypeScript is used to iterate over the values of an iterable object, such as an array or a string.
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Pergunta 24. What is the 'keyof' operator in TypeScript?
The 'keyof' operator in TypeScript is used to obtain the union type of all possible keys of an object type.
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Pergunta 25. How do you use the 'import' statement in TypeScript?
The 'import' statement in TypeScript is used to import modules or exports from other files.
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Mais uteis segundo os usuarios:
- What is TypeScript?
- Explain the difference between 'let' and 'const' in TypeScript.
- What are the basic data types in TypeScript?
- How do you define an interface in TypeScript?
- What is the 'any' type in TypeScript?