Create and Use Objects and Arrays in JavaScript
In JavaScript, objects and arrays are used to store collections of data. Objects store data as key-value pairs, while arrays are ordered lists of elements.
Syntax:
An object is defined using curly braces {}, and within the braces are the keys and values. An array is defined using square brackets [].
- Object:
const person = { name: "Juan", age: 30 }; - Array:
const numbers = [1, 2, 3];
Purpose:
- Organize and store related data.
- Allow manipulation of data collections, such as adding, deleting, or modifying elements.
- Make it more efficient to work with sets of complex information.
Exercises
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JavaScript Concepts and Reference
Functions
Objects in JavaScript
Arrays
DOM (Document Object Model)
Error Handling
Promises and Asynchronicity
Modules in JavaScript
ES6 and Advanced Features
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