One interesting interview question that tests your understanding of object creation control is: Design a class such that only 5 objects can be created. If you try to create a 6th object, it should throw an error. In this blog…
Understanding JavaScript Scopes: A Comprehensive Guide JavaScript is a powerful and flexible programming language that plays a crucial role in modern web development. One of the fundamental concepts that every JavaScript developer must master is “scope.” Scope determines the accessibility…
Question 1 Answer: The result will be number and 10. Explanation: This is because of hoisting. Because of hoisting, the function declaration moves to the top. This is followed by the var declaration. And then the value is assigned. Here…
Answer: Explanation
Answer undefined Explanation return always end in single line or has automatic semicolon, unless there is a block of multiline code.
Answer: Explanation:
Map Filter Find Reduce
Function Syntax This Reference Here because of normal function, the method attached with the object picks up this as the person object. However, if there is another normal function then it will not pick up this as the person object but rather global object…
Certainly! Here are some short code examples for the methods available on the Object object in JavaScript:
Factory Function Factory functions in JavaScript are a way to create objects by encapsulating the object creation logic within a function. These functions act as factories that produce instances of objects with shared properties and methods. Here’s an explanation with…