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Programmatically Select Text on Component Click using React

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by Abdul Rawoof A R dot icon Updated: Feb 20, 2023

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In JavaScript code, to highlight the text given by the user, there are many built-in functions in mark.js, but we are using only two functions for our requirement: the mark() and unmark() functions. In these functions, the mark() function is used to highlight the search text, and unmark() function is used to remove the highlighted text that is highlighted before. 


The main purpose of the highlighting method is to draw attention to important information or data in a text. It first asks the reader to pick out the important parts, and then it gives an effective way to review that information later so that it is called effective highlighting. Sometimes, we may want to select information or data in a text programmatically on a web page. It limits us to highlighting one sentence or phrase per paragraph and looks for the sentence that best expresses the main concept. The effect of highlighting is to make better text memory when re-rendering it, and better comprehension as students evaluate the importance of individual passages while reading. 


Here is an example of how you can programmatically select text on a component click using React: 

Fig : Preview of the output that you will get on running this code from your IDE.

Code

In this solution we're using React library.

React, how to programmatically select text on component click

JavaScriptdotLines of Code : 39dotLicense : Strong Copyleft (CC BY-SA 4.0)

class App extends React.Component {
  state = {
    highlightOn: false,
    smallPortionHighlight: false
  };

  render() {
    return (
      <div>
        <span
          style={{ backgroundColor: this.state.highlightOn ? "red" : "white" }}
          onClick={() => this.setState({ highlightOn: true })}
        >
          Click Me!
        </span>

        <br />
        <br />
        <span onClick={() => this.setState({ smallPortionHighlight: true })}>
          Here is a long text but just highlight this{" "}
          <span
            style={{
              backgroundColor: this.state.smallPortionHighlight
                ? "red"
                : "white"
            }}
          >
            Click Me!
          </span>
        </span>
      </div>
    );
  }
}

ReactDOM.render(<App />, document.getElementById("root"));
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.6.3/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.6.3/umd/react-dom.production.min.js"></script>
<div id="root"></div>

Instructions

Follow the steps carefully to get the output easily.

  1. Install the Node.js and React on your IDE(preferable Visual Studio Code).
  2. Create React Application using npx create-react-app foldername.
  3. cd foldername.
  4. Open the folder in IDE.
  5. Copy the code using "copy" button above and paste it in index.js file(remove the earlier code from index.js) then paste the script tag in index.html file.
  6. Import React and ReactDOM in index.js file.
  7. Open the terminal from IDE.
  8. npm start to run the file.


I hope you found this useful. I have added the link to dependent libraries, version information in the following sections.


I found this code snippet by searching for 'how to programmatically select text on component click using React' in kandi. You can try any such use case!

Environment Tested

I tested this solution in the following versions. Be mindful of changes when working with other versions.

  1. The solution is created in Visual Studio Code 1.73.1.
  2. The solution is tested on node v18.12.1 and npm v8.19.2.
  3. React version-18.2.0.


Using this solution, we are able to programmatically select text on component click using React with simple steps. This process also facilities an easy way to use, hassle-free method to create a hands-on working version of code which would help us to programmatically select text on component click using React.

Dependent Library

reactby facebook

JavaScript doticonstar image 209050 doticonVersion:v18.2.0doticon
License: Permissive (MIT)

The library for web and native user interfaces

Support
    Quality
      Security
        License
          Reuse

            reactby facebook

            JavaScript doticon star image 209050 doticonVersion:v18.2.0doticon License: Permissive (MIT)

            The library for web and native user interfaces
            Support
              Quality
                Security
                  License
                    Reuse

                      You can also search for any dependent libraries on kandi like 'react' .

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