Found 6 articles tagged with #objects

How to use destructuring assignment in JavaScript

A feature in JavaScript that allows you to extract values from objects or arrays and assign them to variables in a more concise and readable way.

Check if object has a specific property in JavaScript

Method hasOwnProperty is often preferred when you want to check only the object itself, while the in operator is useful when you want to check the entire prototype chain.

What is array-like object in JavaScript

An object that has numeric indices and a length property.

How to convert an object to an array in JavaScript

Whether you need to extract keys, values, or key-value pairs, Object.keys(), Object.values(), and Object.entries(), each serving a unique purpose in converting objects into arrays.

Check if object property is undefined in JavaScript

There is no definitive answer to when you should check if an object property is null, undefined, or exists, as it depends on the context and the purpose of your code.

How to clone an object in JavaScript

Cloning an object is harder than you think as you have to handle reference types, circular references, functions, special objects, hidden properties.