Скачать или смотреть How to Render Content on Button Click in React JS

Learn how to effectively use a button to fetch and render content from an external API in React JS with ease.
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How to Render Content on Button Click in React JS

When working with React JS and external APIs, it’s common to want to control when the data is fetched and displayed. You might have a scenario where you fetch data from an API, but you want to render that data only after a user interacts with the UI, such as clicking a button. If you're grappling with the question of how to implement rendering results on a button click, then you're in the right place! In this guide, we'll guide you through a simple way to achieve this functionality using hooks and axios.

Understanding the Problem

Imagine you have an input form where a user can enter a pincode and a date. Currently, you fetch data directly when the component returns, which means the results are rendered as soon as those conditions change. However, you want to refactor the code so that the results are only fetched and displayed after the user clicks a submit button. This gives the user a better experience as it allows them to control when the data is fetched.

Step-by-step Solution

Let's break down the solution into easy-to-follow steps.

1. Setting Up State Variables

First, you want to set up your state variables using the useState hook from React:

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

In this setup:

vpincode will hold the value entered by the user for the pincode.

vdate will hold the selected date.

results will store the data fetched from the API.

2. Creating the Fetch Function

Next, let's create an asynchronous function that fetches data from the API. This function will be called when the user clicks the submit button:

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

3. Rendering the Results

Once the data is fetched, we want to render it. You already have a map function ready for this:

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

4. Adding the Button

Now that we have a function to fetch and render the data, let’s add a button to the component. The button will call fetchApiContent on click:

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

5. Complete Component Code

Here’s how your entire component will look after adding the button and refactoring the fetching logic:

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

Conclusion

By following the steps outlined in this guide, you can effectively control when data is fetched and rendered in your React application by using a simple submit button. Not only does this improve user experience, but it also optimizes the usage of your API calls. Implementing features like these enhances your application's interactivity and responsiveness.

Now, you just need to test this implementation, and you’ll have a fully functional component ready to render results upon button click! Happy coding!