CSS? ???? React?? ??? ??? ? ??? ???? ??

React? ??? UI ???? ?? ??? ????. ? ??????? CSS??? React?? ???? ?? ??? ? ?? ??? ??? ??? ?????.

1??: React ???? ??

React ????? ???? ??? ?????. create-react-app? ???? ?? ??? ? ????.

npx create-react-app drag-and-drop

2??: App.js ? App.css ????

???? App.js ??? ???? ???? ??? ?? ????? ????.

import './App.css';

function App() {
  return (
    <div className="App">
      <h2 className="heading">Select Image:</h2>
      <div className="image-area"></div>
    </div>
  );
}

export default App;

App.css?? ??? ???? ?????.

.App {
  text-align: center;
  width: 100vw;
  height: 100vh;
}

.heading {
  font-size: 32px;
  font-weight: 500;
}

3??: ImageContainer ?? ?? ??

? ?? ImageContainer.js? ??? ?? ??? ? ?? ????? ?????.

import React from 'react';

const ImageContainer = () => {
  return (
    <div className="image-container"></div>
  );
};

export default ImageContainer;

ImageContainer.css?? ? ????? ???? ?????.

.image-container {
  width: 60%;
  height: 90%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px dashed rgba(0, 0, 0, .3);
}

4??: ??? ??? ?? ??

???? ?? ?? ?? ? ??? ???? ImageContainer? ?????.

import React from 'react';
import './ImageContainer.css';

const ImageContainer = () => {
  const [url, setUrl] = React.useState('');

  const onChange = (e) => {
    const files = e.target.files;
    if (files.length > 0) {
      setUrl(URL.createObjectURL(files[0]));
    }
  };

  return (
    <div className="image-container">
      <div className="upload-container">
        <input
          type="file"
          className="input-file"
          accept=".png, .jpg, .jpeg"
          onChange={onChange}
        />
        <p>Drag & Drop here</p>
        <p>or</p>
        <p>Click</p>
      </div>
    </div>
  );
};

export default ImageContainer;

??? ???? ???? ?????.

.image-container {
  width: 60%;
  height: 90%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px dashed rgba(0, 0, 0, .3);
}

.upload-container {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-color: white;
}

.upload-container > p {
  font-size: 18px;
  margin: 4px;
  font-weight: 500;
}

.input-file {
  display: block;
  border: none;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0;
}

5??: ??? ????

???? ???? ??? ? ?? ??? ???? ?????? ????? ?????.

import React from 'react';
import './ImageContainer.css';

const ImageContainer = () => {
  const [url, setUrl] = React.useState('');

  const onChange = (e) => {
    const files = e.target.files;
    if (files.length > 0) {
      setUrl(URL.createObjectURL(files[0]));
    }
  };

  return (
    <div className="image-container">
      {url ? (
        <img className="image-view">



<h3>
  
  
  Step 6: Import and Run the Application
</h3>

<p>Finally, import ImageContainer into App.js and run the app.<br>
</p>

<pre class="brush:php;toolbar:false">import './App.css';
import ImageContainer from './ImageContainer';

function App() {
  return (
    <div className="App">
      <h2 className="heading">Select Image:</h2>
      <div className="image-area">
        <ImageContainer />
      </div>
    </div>
  );
}

export default App;

?? ?? ???? React? CSS? ??? ??? ? ?? ??? ??? ???.

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? ??????? React? ???? ???? ?? ?? ??? ? ?? ??? ????, ?? ?? ? CSS? ???? ???? ????, ??? ????? ???? ??? ????.

? ??? React?? ??? ??? ? ??? ???? ??? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!