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 (572 available).
In regular expressions, the caret (`^`) and dollar sign (`$`) are known as **anchor characters**. They do not match any actual characters; instead, they assert positions ...
Regular expressions (RegEx) are indispensable across software development for parsing, validating, and transforming textual data: ### 1. Form Input Validation Enforcing s...
To match a specific number of characters in a regular expression, you can use quantifiers such as {n} to match exactly n occurrences of a pattern, or {n,m} to match betwe...
To match a specific character that has a special meaning in a regular expression, you can use an escape character () before the special character.
Lookarounds in regular expressions allow you to look ahead or behind the current position in the string without including the matched text in the result. Positive lookahe...
You can compare two dates in JavaScript using the , =, ==, and != operators, which compare the numeric values of the Date objects (i.e., their timestamps). ``` let date1 ...
You can get the current timestamp in JavaScript using the `getTime()` method of the Date object, which returns the number of milliseconds since January 1, 1970, 00:00:00 ...
You can add or subtract days to a date in JavaScript using the `setDate()` method of the Date object, which allows you to set the day of the month for a given date. ``` l...
In JavaScript, an iterator is an object that provides a way to access elements of a collection or a custom data structure in a sequential manner. It allows you to loop ov...
A lambda function, also known as an arrow function in JavaScript, is a concise and shorthand way of defining a function. It uses the => arrow syntax to indicate a functio...
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.