Express.js preguntas y respuestas de entrevista
Test your skills through the online practice test: Express.js Quiz Online Practice Test
Pregunta 26. Explain the concept of 'Promise' in the context of asynchronous operations in Express.js.
Promises in Express.js are used to handle asynchronous operations, providing a cleaner and more readable way to structure asynchronous code.
Es util?
Agregar comentario
Ver comentarios
Pregunta 27. What is the role of the 'express.json()' middleware?
'express.json()' is a middleware that parses incoming JSON requests, populating the 'req.body' property with the parsed data.
Es util?
Agregar comentario
Ver comentarios
Pregunta 28. Explain the purpose of the 'express.static()' middleware.
'express.static()' is a middleware that serves static files, such as images, CSS, and JavaScript files, from a specified directory.
Es util?
Agregar comentario
Ver comentarios
Pregunta 29. How can you handle query parameters in Express.js?
You can handle query parameters in Express.js using the 'req.query' object, which contains key-value pairs of the query parameters.
Es util?
Agregar comentario
Ver comentarios
Pregunta 30. Explain the purpose of the 'express.urlencoded()' middleware.
'express.urlencoded()' is a middleware that parses incoming requests with URL-encoded payloads and is based on the 'body-parser' library.
Es util?
Agregar comentario
Ver comentarios
Lo mas util segun los usuarios:
- How to handle errors in Express.js?
- What is Express.js?
- How to install Express.js?
- What is middleware in Express.js?
- What is the purpose of app.use() in Express.js?