When building software applications there are scenarios where you will want to upload and instantly preview the uploaded image(s). Before we delve into the code aspect, here are a few reasons why you might want to add the image preview functionality to your application.
<div class="container">
<h2>Upload Image:</h2>
<input type="file" onChange={handleChange} /><br />
<img src={file} style={{ maxWidth: '100%', height: 'auto' }}/>
</div>
Next, we want to define the handleChange function.
const [file, setFile] = useState();
function handleChange(e) {
console.log(e.target.files);
setFile(URL.createObjectURL(e.target.files[0]));
}
import { useState, useEffect } from 'react';
const Home = () => {
const [file, setFile] = useState();
function handleChange(e) {
console.log(e.target.files);
setFile(URL.createObjectURL(e.target.files[0]));
}
return(
<div class="container">
<h2>Upload Image:</h2>
<input type="file" onChange={handleChange} /><br />
<img src={file} style={{ maxWidth: '100%', height: 'auto' }}/>
</div>
)
}
export default Home
Next, we want to instantly preview uploaded image in React JS. Here’s what the code looks like:
We have done similar image upload and preview with PHP’s PDO and JQuery
Here is how to instantly preview uploaded image in React JS
In summary, incorporating image previews within an application contributes significantly to user satisfaction, error prevention, and overall usability, ensuring a smoother and more efficient user experience.
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