React can swap components or elements using regular JavaScript conditional logic. In this video, learn how to use these to cope with the possibility of slow responses from external APIs.
- [Instructor] When you're working with an API … or other external data, … ideally it's going to be super fast and no one will notice. … But in reality, connections can be slow, … so it's a good idea to plan for that. … In this video, we're going to look at conditional rendering, … setting up a loader animation that will display … while our page waits for its live data. … Right now, when we load this page. … I'll refresh it. … And it's pretty much instantaneously showing … the information from our API. … We never even see what's here before these messages appear. … Back in our code, … let's jump down to the StatusMessageList component, … using Command + Shift + O. … StatusMessageList, here we go. … Right now, the way this works is … we have the static data, … here in stubStatuses, … which is used first. … And then after the component renders, … we retrieve our status messages. … Let's get rid of these stubStatuses. … We're going to stop using them … and just use the data from the API. …
Author
Joe Chellman
Released
6/5/2019- Installing React on an existing site
- Thinking about a design in terms of components
- Creating fully-featured function components using Hooks
- Storing and retrieving data from an external RESTful API
- Employing third-party components for CSS animation
- Using conditional rendering
Skill Level Intermediate
Duration
Views
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Introduction
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Using the exercise files1m 2s
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1. Introducing React
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2. First Project: Customizer
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Attaching a data source3m 20s
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Implement props4m 28s
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Solution3m 4s
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3. Second Project: Directory Browser
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Scaffold initial components5m 58s
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Functional components6m 37s
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Build the filters form5m 41s
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Wire up the filters form10m 57s
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4. Third Project: Status Updater
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Using conditional rendering4m 36s
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Let form post to the API3m 25s
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Conclusion
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Video: Using conditional rendering