JavaScript is a core programming language for web development. If you are preparing for a JavaScript interview, knowing common questions can help you perform better. Here are a few essential ones:
What is JavaScript?
JavaScript is a lightweight, interpreted programming language used to make web pages interactive.
Difference between var, let, and const?
var is function-scoped, let and const are block-scoped. const cannot be reassigned.
What is a callback function?
A callback is a function passed as an argument to another function and executed later.
What is the difference between == and ===?
== checks for value equality, === checks for both value and type equality.
What is the DOM?
The Document Object Model (DOM) represents the structure of a web page, allowing JavaScript to manipulate HTML elements.
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