Skip to content
Learn tech systems

Learn tech systems

  • JS Education
  • Youtube
  • Twitter
  • Github
  • Linkedin
  • My resume
  • Search

Category: React hooks

React validate if an item exist in array and set a message to the user
Category ReactPosted on August 26, 2022August 26, 2022

React validate if an item exist in array and set a message to the user

Hi, in this post I’m going to add a new item(name) to an existent array(names) and I will check if the new item exist in the array and if exist then send a message to th…
Read more "React validate if an item exist in array and set a message to the user"
React add item and update the DOM
Category JavascriptPosted on August 26, 2022August 26, 2022

React add item and update the DOM

Hi, in this post I'm going to add the code to add a new item (name) to an existent array (names) and update the DOM automatically on the OnClick method. …
Read more "React add item and update the DOM"
Colocate state in React
Category ReactPosted on January 13, 2022January 13, 2022

Colocate state in React

Hi, in this post we are going to see what means "colocate state in React" and we are going to see an example. …
Read more "Colocate state in React"
useRef in React
Category ReactPosted on January 8, 2022January 8, 2022

useRef in React

Hi, in this post we are going to see how to use the "useRef" hook in an example. …
Read more "useRef in React"
What is lifting state in React?
Category ReactPosted on January 7, 2022January 7, 2022

What is lifting state in React?

Hi, in this post we are going to learn about what is lifting state in React and we are going to see an example. …
Read more "What is lifting state in React?"
What is a Custom hook in React?
Category ReactPosted on January 4, 2022January 4, 2022

What is a Custom hook in React?

Hi in this post we are going to know what is a custom hook in React and how this will help us in our code. …
Read more "What is a Custom hook in React?"
Optimizing useEffect in React
Category ReactPosted on December 31, 2021December 31, 2021

Optimizing useEffect in React

Hi, in this post we are going to see how to optimize the useEffect hook in React. …
Read more "Optimizing useEffect in React"
Learning useEffect: persistent state in React
Category ReactPosted on December 29, 2021December 29, 2021

Learning useEffect: persistent state in React

Hi, in this post we are going to lear about the useEffect in React, this method is part of the special functions that React handle in "hooks". …
Read more "Learning useEffect: persistent state in React"
Understanding React useState
Category ReactPosted on December 29, 2021December 29, 2021

Understanding React useState

Hi, in this post we are going to understand how the useState works and we are going to see some examples. …
Read more "Understanding React useState"
Why the key prop is necessary in React?
Category JSXPosted on December 28, 2021December 28, 2021

Why the key prop is necessary in React?

Hi, in this post I'm going to explain why React need a key prop to work and we are going to look that if we don't insert the "key" then we are going to have a warning i…
Read more "Why the key prop is necessary in React?"

Posts navigation

Page 1 Page 2 Page 3 Next

Recent Posts

Be a professional developer
Category Cross browsing testingPosted on February 17, 2023February 17, 2023

Be a professional developer

React validate if an item exist in array and set a message to the user
Category ReactPosted on August 26, 2022August 26, 2022

React validate if an item exist in array and set a message to the user

React delete item and update the DOM
Category JavascriptPosted on August 26, 2022August 26, 2022

React delete item and update the DOM

React add item and update the DOM
Category JavascriptPosted on August 26, 2022August 26, 2022

React add item and update the DOM

Categories

  • Algorithms (22)
  • Apache (1)
  • Apollo (2)
  • Array (1)
  • async (2)
  • Asynchronous (11)
  • await (1)
  • Browser (4)
  • Call stack (5)
  • Callback (2)
  • Cassandra (1)
  • Chrome (1)
  • Cloud computing (1)
  • Code (1)
  • Cross browsing (1)
  • Cross browsing testing (2)
  • Css (9)
  • Data (3)
  • data structure (1)
  • Database (7)
  • Developer (1)
  • DevOps (1)
  • DOM (9)
  • ES6 (36)
  • express (2)
  • Fetch (1)
  • Functional programming (4)
  • git (4)
  • Github (6)
  • GraphQL (22)
  • Hackerrank (3)
  • HTML (5)
  • Inheritance (2)
  • Interviews (1)
  • Javascript (150)
  • JSON (1)
  • JSX (2)
  • Memory heap (5)
  • MySQL (6)
  • nodejs (8)
  • NoSQL (1)
  • npm (1)
  • Object.prototype (1)
  • performance (4)
  • Promise (3)
  • prototype (2)
  • QA (1)
  • React (54)
  • React Fundamentals (24)
  • React hooks (21)
  • React Testing Library (9)
  • Redux (1)
  • Regression testing (3)
  • Server (1)
  • Software Engineer (1)
  • SQL (4)
  • Styles (2)
  • success (1)
  • Synchronous (7)
  • terminal (2)
  • Testing (19)
  • TypeScript (10)
  • Uncategorized (9)
  • Unit test (16)
  • Unit testing (16)
  • wep app (2)
  • Wordpress (2)
  • work (1)
Made with love by Cristina Rojas ©2020 All rights reserved