Q1231. What is Node.js?
Node.js is a JavaScript runtime for server-side applications. It lets you run JavaScript outside of web browsers, handle network requests, access databases, and build sca...
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Q1232. What is a PWA?
PWAs (Progressive Web Apps) are web applications that use JavaScript, HTML, and CSS to provide a mobile app-like experience. They work offline, send push notifications, a...
Q1233. What is the difference between undeclared & undefined?
Undeclared variables are those that do not exist in a program and are not declared. If the program tries to read the value of an undeclared variable, then a runtime error...
Q1234. What is statically typed and dynamically typed language and is JavaScript a statically typed or a dynamically typed language?
Dynamically-typed languages perform type checking at runtime, while statically typed languages perform type checking at compile time.Javascript is a dynamically typed lan...
Q1235. What is function currying?
Function currying is a process in which we convert a function with multiple parameters to a chain of functions with a single parameter. ``` // Normal function function su...
Q1236. What is control flow function?
A control flow function in JavaScript refers to a function that controls the flow of execution within a program, particularly when dealing with asynchronous operations.