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Show more items in react

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by vsasikalabe dot icon Updated: Feb 21, 2023

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Users can buy the items online using some web application. There is a list of items present in the app. They can see more details about the product. When they click on any of the items, it will take them to that product page. Also, they can see the list of hardware parts used to make that product. For example, I have limited the hardware parts to 6 at a time, and then I have a button called 'Show More'. So, when the user clicks show more, other hardware parts will be shown.  


In React, displaying the object list items is very simple. This can be done using the map() method in React JSX. We can map a list of objects and display items in the React app. I want each element to have a "show more/less" functionality to expand and shorten the text to display a list of elements on my page. The show more button holds the listed items. The list of items is shown based on every click. The page looks very simple and clear to view using this method. We can use this code for more lists of items based on our needs.  

Set the onClick function to setShowMore(!showMore). When the user clicks the show more, it will rotate between hiding and showing the text. Now the button works and will expand and hide. Import the props with their key names. It tells the browser first to check if the readMore state variable is true. If it is, display the whole test coming from the body; if it's false, show only the first mentioned characters of the text. We will see the shortened text when opening the page since the readMore state variable is set to false at the beginning. 


Here is an example of how to create a show more button using Reactjs: 

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

Code:

In this solution we use the React library.

Show more items in react state when a button is clicked

JavaScriptdotLines of Code : 81dotLicense : Strong Copyleft (CC BY-SA 4.0)

class ShowSomeItems extends React.Component {
  constructor() {
    super()
    this.state = {
      cars: [
        { "name": "Audi", "country": "Germany" },
        { "name": "BMW", "country": "Germany" },
        { "name": "Chevrolet", "country": "USA" },
        { "name": "Citroen", "country": "France" },
        { "name": "Hyundai", "country": "South Korea" },
        { "name": "Mercedes-Benz", "country": "Germany" },
        { "name": "Renault", "country": "France" },
        { "name": "Seat", "country": "Spain" },
        { "name": "Dodge", "country": "USA" },
        { "name": "BMW", "country": "Germany" },
        { "name": "Tesla", "country": "USA" },
        { "name": "Volkswagen", "country": "Germany" },
        { "name": "Hyundai", "country": "South Korea" },
        { "name": "Jaguar", "country": "United Kingdom" },
        { "name": "GMC", "country": "USA" },
        { "name": "Bentley", "country": "United Kingdom" },
      ],
      numberOfitemsShown: 5,
    }
  }


  showMore = () => {
    if (this.state.numberOfitemsShown + 3 <= this.state.cars.length) {
      this.setState(state => ({ numberOfitemsShown: state.numberOfitemsShown + 3 }));
    } else {
      this.setState({ numberOfitemsShown: this.state.cars.length })
    }
  }

  render() {

    const itemsToShow = this.state.cars
      .slice(0, this.state.numberOfitemsShown)
      .map(car => <li key={car.name}>{car.name}</li>);

    return (
      <div>
        <ul>
          {itemsToShow.length ? itemsToShow : "Loading..."}
        </ul>
        <button onClick={this.showMore}>
          show more
        </button>
      </div>
    );
  }
}

const Items = props => {
  if (props.cars.length === 0) {
    return "Loading..."
  }
  return props.cars
    .slice(0, props.numberOfitemsShown)
    .map(car => <li key={car.name}>{car.name}</li>)
}

class ShowSomeItems extends React.Component {
//rest excluded for brevity

  render() {

    return (
      <div>
        <ul>
          <Items cars={this.state.cars} numberOfitemsShown={this.state.numberOfitemsShown} />
        </ul>
        <button onClick={this.showMore}>
          show more
        </button>
      </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 App.js file(remove the earlier code from App.js).
  6. Import React library.
  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 Show more items in 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 VS Code 1.73.1 version.
  2. The solution is tested on Nodejs 16.14.2 version.
  3. react 18.2.0 version.


Using this solution, we are able to show more items in 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 show more items in react.

Dependent Libraries

create-react-appby facebook

JavaScript doticonstar image 100082 doticonVersion:v5.0.1doticon
License: Permissive (MIT)

Set up a modern web app by running one command.

Support
    Quality
      Security
        License
          Reuse

            create-react-appby facebook

            JavaScript doticon star image 100082 doticonVersion:v5.0.1doticon License: Permissive (MIT)

            Set up a modern web app by running one command.
            Support
              Quality
                Security
                  License
                    Reuse

                      You can search for any dependent library on kandi like react.

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