While learning full stack web development, you may be wondering the Difference between render and return in reactJS
Well, to put it simply, the render method returns a single child component to be rendered by the parent, while the return method will return whatever value is passed into it to be returned up to its caller.
This may not seem like much of a difference, but it can become important when you’re working with higher-order components, stateless functional components, or memorization.
This article will explore these two methods in more detail and show you how to use them in your projects or how it works while learning full stack web development. So keep reading!
What Is The Render Method In ReactJS?
The render method is a vital part of ReactJS, as it determines what gets displayed on the screen. It takes in the app’s state and renders it to a DOM node. This makes it easy to track what’s going on in your app, as the render method will always show the latest state.
The render method is called automatically by ReactJS, so you don’t need to call it yourself. However, you can call it manually if you need to. The render method is also where you should do any processing that doesn’t need to happen every time the state changes.
For example, if you have an extensive list of items, you might want only to render the part of the list that’s visible on the screen. Your app will be more efficient and won’t slow down as the state changes.
What Is Return In ReactJS?
The return method in React is a way to return data from a component. It returns the data that was passed into the component, which the parent component can then use. The return method is generally used when you want to return a single value from a component.
For example, if you want to return the text of a button from a Component, you would use the return method.
What Is The Use Of Render Method in ReactJS?
The render method in ReactJS functional component is the default lifecycle method that returns a single child component to be rendered by the parent. It’s important to use this method when you want to return a component from a parent to a child. This will ensure that the child receives the correct data and state from the parent.
When Not To Use The Render Method?
There may be times when you don’t want to use the render method. For example, if you’re working with higher-order components, stateless functional components, or memorization there, you may not need to use it.
You can simply return whatever value is passed into the return method in these cases.
When To Use The Return Method?
The return method can be used in a few different situations. One example would be when you want to return a default value from a function. Another instance would be when you wish to return a value from a component used as a stateless functional component.
You can also use the return method to return values from higher-order components.
When To Not Use The Return Method?
The return method should not be used when you need to return multiple values from a function. In this case, the render method should be used instead. Additionally, the return method should not be used when you need to call a function that is not in the same component.
In this case, the lifecycle method should be used instead.
How Do They Differ?
|Render Method||Return Method|
|The render method will always return a single child component.||The return method can return any value.|
|The render method sets up the child component’s initial state and lifecycle methods.||The return method returns a value.|
|The render method is used when you want to create a new component.||The return method is used when you want to reuse an existing component.|
|The render method is more common.||The return method is less commonly used.|
Which Should You Use And Why?
When working with React, you’ll often need to choose between two different methods: the render method and the return method. The render method is the default lifecycle method and returns a single child component to be rendered by the parent. In contrast, the return method will return whatever value is passed into it to be returned up to its caller.
Now, the question arises: which should you use and why?
Well, that depends on what you’re trying to do. The render method is generally a better choice when working with higher-order components, stateless functional components, or memorization. It allows for more efficient code that’s easier to read and understand.
On the other hand, the return method may be a better choice when you’re working with simple components or when you need to return multiple values.
So, which should you use?
If you want to acquire good React JS front end developer skills, you should know how to use them. Since the render method is probably the safest choice if you’re not sure. But if you have a specific reason to use the return method, go for it!
When it comes to Learn full stack web development online using React, understanding the difference between the render and return methods is essential. Knowing which one to use can make a big difference in your codebase, so be sure to understand when each should be used.
In this article, we have mentioned the critical differences between the two. In most cases, you’ll likely want to use the render method. However, there are some scenarios where the return method might be better. Be sure to understand each one before making a decision.