React.js and Angular are two popular open-source JavaScript frameworks used for front-end development.

React.js is a JavaScript library created by Facebook for building user interfaces. It uses a component-based structure, which allows developers to break down complex user interfaces into smaller, more manageable pieces. React.js offers more flexibility than traditional Model-View-Controller (MVC) frameworks, allowing developers to create custom components for their projects.

Angular is a full-featured MVC framework from Google. It allows developers to create single page web applications by combining data from a Model layer with components from a View layer. Angular's component-based architechture insulates developers from many of the complexities of modern web programming, allowing them to easily create, update and delete objects.

Both React.js and Angular offer different approaches to web development, and thus are suitable for different use cases. For some projects, React.js might be a better choice due to its flexibility, while Angular could be a better choice in other cases due to its robust architecture. Ultimately, the decision on which framework to use should come down to the project at hand and developers' preferences.

For more information, see the following link: https://developer.telerik.com/topics/web-development/angular-vs-react-which-framework-should-you-choose-your-next-project/

In React, you can use the import statement to import an image from a file. For example, if you have an image located at src/image.jpg, you can import it into a React component like so:

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import MyImage from './src/image.jpg'

You can then use the image in the component's render method as follows:

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  render() {
   return (
       <div>
         <img src={MyImage} alt="My Image" />
       </div>
   )
  }

You can find more information on importing images in the React Documentation here.

You can change an HTML element text inside React using setState(). This can be done by calling the function and then setting the new value for HTML elements like h2 as shown in the example below.

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class App extends React.Component {
  constructor(props) {
    super(props);
    this.state = { 
        text: 'Hello world!'
    }
  }

  handleTextChange = () => {
      this.setState({text: 'This is my new text!'});
  }

  render() {
    return (
      <div>
        <h2>{this.state.text}</h2>
        <button onClick={this.handleTextChange}>Change text</button>
      </div>
    )
  }
}

You can read more about this use case in this article.

You can create a column in React using Bootstrap's <Col> component. The <Col> component is a utility for getting the correct number of cols for the Bootstrap grid based on your screen size. For example, you can use the code below in a React component to create a column with the size of 6:

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import { Col } from 'react-bootstrap';

<Col md={6}>
  Column Content
</Col>

For more information on setting up and using the <Col> component in React, please refer to the React Bootstrap documentation on Grid Components.