InterviewPro: Master Tech Fundamentals

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JavaScript Fundamentals for Interviews

JavaScript Fundamentals for Interviews: Quick, concise guides covering essential JS topics. Perfect for last-minute interview prep and mastering core concepts in a short time.

Articles in this series

Variables (var, let, const)

Jan 19, 20243 min read

Expert-Level Explanation In JavaScript, variables are containers for storing data values. There are three ways to declare a variable: using var, let,...

Variables (var, let, const)

Data Types (String, Number, Boolean, null, undefined, Symbol, BigInt)

Jan 19, 20244 min read

Expert-Level Explanation JavaScript provides several data types to hold different kinds of values. Here are the main types: String: represents...

Data Types (String, Number, Boolean, null, undefined, Symbol, BigInt)

Functions (Function Declaration, Function Expression, Arrow Functions)

Jan 19, 20242 min read

Expert-Level Explanation Functions in JavaScript are blocks of code designed to perform a particular task. Function Declaration: Defines a named...

Functions (Function Declaration, Function Expression, Arrow Functions)

Scope (Global, Local, Block)

Jan 19, 20241 min read

Expert-Level Explanation Scope in JavaScript refers to the visibility of variables. Global Scope: Variables declared globally (outside of any...

Scope (Global, Local, Block)

Closures in JavaScript

Jan 19, 20241 min read

Expert-Level Explanation A closure in JavaScript is a function that remembers its outer variables and can access them. In JavaScript, every time a...

Closures in JavaScript

Object Literals

Jan 19, 20241 min read

Expert-Level Explanation Object literals in JavaScript are a way to create objects. They are collections of key-value pairs, where keys are strings...

Object Literals