Saturday, December 3, 2022

How to Re-render View on Browser Resize with React?

Various top-range programming languages are useful for creating different types of digital solutions. In terms of custom mobile app development, React is a high-rated choice due to the high-quality usability it holds. It is easy to conduct different front-end and UI design computing work with React, but sometimes, a few issues can arise. 

One common problem many people experience is appropriately changing the view rendering after resizing the browser window. That is what we will cover in this article; read ahead to know the right steps to take. 

Why re-rendering the view is necessary?

Before you hire React developer from for the re-rendering process and building business productive web and mobile applications, knowing when that is necessary first is vital.

During app development, developers can individually focus on adding components or blocks to the pages. However, that can get complicated and increase overall development time when one manually completes the same action. At this time, having the software re-render its view automatically as the browser window size changes are useful. 

It is possible to do it with jQuery, but it can take some extra steps with programming with React for users who do not know it. However, there are ways available to re-render the view efficiently. 

What does the re-rendering view mean?

Re-rendering in the context of coding in React refers to the component renewing or rendering its action again. During this process, the program slightly delays as the image re-conditions. 

In React, the re-render function triggers after the component’s states have changed. For example, it can happen due to the setState modification or when there is a notable props change. The component turns into the updated state, and then the React framework re-renders its component. 

Rendering/Re-rendering- how does it work in React?

Notably, React does not completely render the codes after the state modifies. In case of state change in components, it and its subtypes go under the re-rendering process. While the setState is active, it can mark a component as necessary for re-render or “dirty”. The framework itself avoids comparing the state data. 

When the rendering process works in React, it moves through the supplied React Element. Then, it prepares any corresponding DOM node for the Node it travelled through. Notably, the functional components via Render always re-render when the setState() is acquired within the component or its off-spring components. 

How to re-render the view function via React for browser resizing?

One can follow particular steps for the browser window component changes in size to re-render the view efficiently. Some of the most usable solutions are explained here. 

  • Opt for the ‘useLayoutEffect’ approach

One of the right options to re-render the view is using the approach of “useLayoutEffect” with React. With this, it is possible to add an event listener element to the page while the window goes through a resizing process.

With the event handler for window resize functionality, a React developer would run the code for setState changing to allow view re-rendering. 

For the coding to run, you can use a customized “useWindowSize” hook that comes with a specialized “size” state. As for the callback of the “useLayoutEffect” hook, a developer you hire from the team can prepare the new “updateSize” function. This would call the “setSize” and set its “size” state with “window.innerHeight” and “window.innerWidth” alongside the arrange. The two terms mentioned here refer to the height and width of the resized browser window.   

After this, there is a call for the “window.addEventListener” code and the “resize” component. The developers do this to set the “updateSize” hook as the event listener (window resize). 

The developer here can return the function in the “window.removeEventListener” code. This works to clear out the resize event listener during the component unmounting process. 

In the end, the “size” is returned at the final section of the hook function. Then, within the “App” component, the developer destructures the height and width amount that the “useWindowSize” hook returns to the code. After that, the rendering takes place within the span, and the size of the view can change when the browser window resizes. 

  • Use the ‘componentDidMount’ approach 

Another simple solution you can use to first code force update the action using the following command:

resize = () => this.forceUpdate()

Following that, you have to include the following “componentDidMount” commands to rerender the view. Make sure to throttle the action of force updating to avoid any glitches in the next process:

componentDidMount() {

  window.addEventListener(‘resize’, this.resize)


componentWillUnmount() {

  window.removeEventListener(‘resize’, this.resize)


Notably, this process is useful in case the force update action was applied conditionally during the throttling action. Alternatively, you should throttle the resize event firing in case of resizing the browser window instead of “forceUpdate”, as per some experts. 

Additionally, it would be best to get rid of the listener while calling the “componentWillUnmount ()” action. 

Final Words 

Overall, re-rendering the view as a component through React is possible. But activating the re-rendering action for the browser size change requires specific state changes first. Therefore, you should hire trained high-profile React developers for this action to get the best results, like the experienced team at BOSC Tech. They can carry out diverse programming fixes carefully, with high-quality and quick results, and later limited bug issues.