React is a Javascript frontend library and if you want to get started with React first, you have to learn Javascript, the programming language that powers React. Javascript itself is a huge language, and it’s not possible for you to learn all of it before learning React. But fear not, this article explains 10 Javascript concepts you must learn before moving on to React. Thanks for reading! Topics covered:

Accessing by value or by reference In JavaScript, a variable may store two types of data: primitive and reference. JavaScript provides six primitive types as undefined, null, boolean, number, string, and symbol , and a reference type object. When you assign a variable a value, the JavaScript engine must determine whether the value is a primitive…

Github….facebook for developers. Giving this name to this amazing site is not injustice. Afterall this site not only helps you to host your code with version control, but it is also helpful in making networks with other great developers across the world. A lot of developers love to spend time…

mapStateToProps When learning Redux, we are first introduced to mapStateToProps. A little confusing at first, but upon closer inspection, it is just a simple function (no imported library) that simply returns a specified part of the current state. const mapStateToProps = (state) => { return { things: state.things } }; …

The reason why the application did not re-render previously is because our React and Redux libraries could not properly communicate to each other correctly to specify that a change in the store’s state occurred. Luckily, we can use the React Redux library to get React and Redux talking to one another. Run npm install react-redux --save to install it and add to our package.json. The React Redux library gives access to a component called the Provider. The Provider is a component that comes from our React Redux library. It wraps around our App component. It does two things for us. The first is that it will alert our Redux app when there has been a change in state, and this will re-render our React app.

What’s a Container Component? “Container components are components that are aware of Redux” — the internet So, what does that mean? Well, a container component is a component that is responsible for retrieving data, and in order to get that data, the component needs to use Redux’s connect and mapStateToPropsfunctions. A container component will…