Technical Question Bank · Peer-Reviewed
Search and filter frequently asked interview questions across technical, programming, and behavioral domains. Tailor your interview preparation by difficulty for freshers or experienced developers (2,728 available).
Control flow functions provide mechanisms to coordinate and handle asynchronous operations, ensuring that certain actions occur before or after others. They help to maint...
No, you cannot directly access the DOM in Node.js. Node.js is a runtime environment for running JavaScript outside of web browsers, and it does not have a built-in DOM im...
In the client-side/browser environment, if variables and functions are declared in the global scope (window), they can be accessed and shared by all scripts on the page. ...
The `instanceof` operator checks whether the prototype property of a constructor appears anywhere in the prototype chain of an object. In other words, the `instanceof` op...
Prototypal inheritance also has some drawbacks. First, it can be more difficult to understand than class-based inheritance. Second, it can be more difficult to debug. Thi...
When using regular expressions, common problems include incorrect pattern matching, performance issues with large data or complex patterns, difficulty in readability and ...
The "var" keyword in JavaScript has limitations. Variables declared with "var" are function-scoped, accessible throughout the entire function. It lacks block-level scopin...
The "this" keyword in JavaScript has limitations. Its value depends on the function invocation, leading to confusion and unexpected behavior. In arrow functions, "this" b...
The "delete" operator in JavaScript has drawbacks. It can be slow and impact performance when deleting object properties. It does not affect the prototype chain, leading ...
Closures in JavaScript allow for encapsulation, data privacy, and the creation of private variables and functions that are inaccessible from the outside scope.
HireXTech uses essential storage to remember your study preferences and third-party advertising cookies via Google AdSense in compliance with GDPR. You can choose to enable essential cookies only or accept all cookies. Read our Privacy Policy.