JavaScript Tutorials

What is npm init?

The npm init command in the JSON language creates a package.json file for your project’s frontend. A package.json file is a file that contains information about the project’s packages and dependencies. It also contains metadata for the project such as…

JavaScript Try Catch: A Step-By-Step Guide

JavaScript try catch blocks are error handlers. The “try” block contains the code you want to test. “catch” contains code that will run if the code in your “try” block cannot execute successfully. When developers are testing their programs, it’s…

JavaScript Array Length: A Complete Guide

The JavaScript array length property states the number of items in an array. To find the length of an array, reference the object array_name.length. The length property returns an integer. You’ll often want to know how many values are in…

How to Use React useEffect

The development team at React introduced the concept of Hooks in React version 16.8. A React Hook allows the use of state and other React features in a function component. With the hook useState, a function component can set its…

React Lifecycle: An Overview

A lifecycle in React can be thought of in three different phases: mounting, updating, and unmounting. Mounting occurs when the React component renders to the DOM (Document Object Model). When changes are made to that component, it enters the updating…

A Closer Look at jQuery Selectors

Selectors are the foundation of the jQuery library. They will always be used when using jQuery to manipulate the DOM. Selectors operate as a function to return a matching element. They come with the jQuery library and are ready to…

What is JSON?

JSON is an acronym for JavaScript Object Notation. It is a JavaScript object that organizes data in key/value pairs. Storing data in this manner makes these objects lightweight and language independent. This means JSON can be read by most programming…

JavaScript: Go to URL: A Complete Guide

The window.location value represents the current URL you are viewing in your browser. You can replace this value to go to another URL In JavaScript. This is useful if you want to redirect a user to another page. You can…

JavaScript JSON: A Guide

JSON, short for JavaScript Object Notation, is a way of storing data. In JSON objects, values are mapped to labels called keys. JSON objects can store any data type, including strings, integers, and other JSON values. JSON is a standard…

JavaScript: Object.values(): A Complete Guide

The JavaScript Object.values() method retrieves a list of the values in an object. You can iterate over the result of the values() method to see the contents of each value in the object. Objects contain keys and values. Sometimes, you…

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