Скачать или смотреть Tackling the Chartist Graph Redraw Issue in React.js

Learn how to prevent Chartist graphs from being re-drawn with every interaction in React.js by controlling animations properly and optimizing your component.
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This video is based on the question https://stackoverflow.com/q/61609116/ asked by the user 'Aldor' ( https://stackoverflow.com/u/12702403/ ) and on the answer https://stackoverflow.com/a/63451455/ provided by the user 'Mehdi Shakeri' ( https://stackoverflow.com/u/11604867/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Tackling the Chartist Graph Redraw Issue in React.js

If you are a web developer working with React.js and Chartist.js, you might have encountered a frustrating issue: your graphs get re-drawn every time you click a button or resize your window. This can lead to performance problems and a poor user experience. In this guide, we’ll explore the underlying issue and how you can address it to achieve smoother graph interactions.

The Problem

In the initial setup, every event, whether it’s a button click or a window resize, triggers a complete re-render of the chart. This can be annoying for both developers and users, as the graphs continually flicker or reset, leading to a jarring experience.

Understanding the Cause

The root cause of this behavior lies in how the Chartist library handles animations. Specifically, when the animation logic is placed directly in the drawing process, it causes the chart to redraw repeatedly whenever any state change occurs in your React component.

Our Solution

To keep your Chartist graphs from being re-drawn every time an event occurs, we can manage the animations smartly. Here is a step-by-step breakdown of how to solve this problem:

Step 1: Control the Animation

The first change we need to implement is to move the animation control out of the drawing process. Instead of allowing the animation to initiate every time the graph is drawn, we'll use a simple counter mechanism. This way, we can trigger the animation conditionally based on the chart’s state.

Step 2: Update Your Code

Here’s how you can modify your chart creation code:

Declare a Global Animation Counter: Introduce a counter variable that will keep track of the animation state.

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Use Conditionals for Animation: Wrap your animation logic in an if statement inside the draw function, ensuring that animation only plays when certain conditions are met.

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Example Code

Here is how your updated chart creation code block might look after applying this solution:

[[See Video to Reveal this Text or Code Snippet]]

Final Integration

Upon implementing these changes and re-rendering your chart, you should notice that interactions such as button clicks and window resizing no longer cause the chart to redraw unnecessarily. The animations will appear smoother and be much more user-friendly.

Conclusion

In summary, dealing with redraw issues in Chartist.js while using React.js can be overcome by managing your animations intelligently and conditionally controlling when they occur. By creating a simple counter for your animation states, you can provide a much better experience for users interacting with your charts.

Next time you face a similar issue with Chartist, remember this approach to enhance performance and user experience. Happy coding!