react top loading bar

When creating a loading bar or progress bar with React, the basic steps are as follows: 1. Create the container to hold the progress bar.

javascript
<div class="progress-bar-container"></div>

2. Create a child component that will display the progress bar.

javascript
const ProgressBar = () => { return ( <div> <div class="progress-bar"></div> </div> ); }

3. Set a state value to control the width of the progress bar.

javascript
class ProgressBarContainer extends React.Component { constructor(props) { super(props); this.state = { width: 0 }; } }

4. Increment the width value in the state with a timer. The timer can be set to a specific interval, or it can be based on an external event.

javascript
componentDidMount() { this.timerID = setInterval( () => this.incrementWidth(), 500 ); } incrementWidth() { this.setState({ width: this.state.width + 5 }); }

5. Pass the width value of the state to the ProgressBar component.

javascript
render() { return ( <div class="progress-bar-container"> <ProgressBar width={this.state.width} /> </div> ); }

6. Finally, use the width value to control the width of the progress bar.

javascript
const ProgressBar = (props) => { return ( <div> <div class="progress-bar" style={{ width: `${props.width}%` }}></div> </div> ); }

With the steps above, a basic React progress bar is created. There are various other ways to create a progress bar with React, such as using libraries or creating more complex components. However, the steps discussed above will create a simple and efficient progress bar.

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