Creating a multiline textarea with ellipsis using ReactJS

Question

Creating a multiline textarea with ellipsis using ReactJS

Looking to create a component with a multiline textfield that displays ellipsis (...) for text overflow beyond 2 lines. How can I achieve this through CSS only without modifying the actual stored text?

Utilizing the React component found at: link

Appreciate any assistance, thank you.

javascript css reactjs ecmascript-6 material-ui

Answer 1

Answer №1

After some experimentation, I successfully found a solution for handling this in React.

As mentioned by Khodor, using line-clamp is the way to go. However, since it's not officially supported in CSS yet, a workaround like -webkit-line-clamp can be used. I had some difficulty figuring out the correct syntax for React at first. Eventually, I managed to uncover it by examining the source code of the NPM package react-lines-ellipses and searching for 'webkit' within the GitHub repository.

The Custom CSS for React

const textStyle = {
    maxWidth: '100%',
    display: '-webkit-box',
    WebkitBoxOrient: 'vertical',
    WebkitLineClamp: 3,
    overflow: 'hidden',
    textOverflow: 'ellipsis',
  };

I specified the maxWidth to ensure the text fills the entire width of the displaying element, though this step is optional.

overflow: 'hidden' conceals any surplus text beyond the set 3 lines (I arbitrarily selected 3).

textOverflow: 'ellipsis' appends an ellipsis (...) to indicate where the text has been truncated.

The JSX Implementation

<div
    onClick={toggleTruncate}
    style={calculateTextStyle()}
>
This area contains my lengthy text.
</div>


// The following function determines the appropriate style for the above div.
 function calculateTextStyle() {
    return truncate ? textStyle : null;
  }

// By using React Hooks, I established a state variable to control whether the text should be truncated or displayed in full.
  const [truncate, setToggleTruncate] = React.useState(true);

// This function toggles the state variable 'truncate', providing a mechanism to expand or truncate the text with each click on the div element.
  function toggleTruncate() {
    setToggleTruncate(!truncate);
  }

Answer 2

After some experimentation, I successfully found a solution for handling this in React.

As mentioned by Khodor, using line-clamp is the way to go. However, since it's not officially supported in CSS yet, a workaround like -webkit-line-clamp can be used. I had some difficulty figuring out the correct syntax for React at first. Eventually, I managed to uncover it by examining the source code of the NPM package react-lines-ellipses and searching for 'webkit' within the GitHub repository.

The Custom CSS for React

const textStyle = {
    maxWidth: '100%',
    display: '-webkit-box',
    WebkitBoxOrient: 'vertical',
    WebkitLineClamp: 3,
    overflow: 'hidden',
    textOverflow: 'ellipsis',
  };

I specified the maxWidth to ensure the text fills the entire width of the displaying element, though this step is optional.

overflow: 'hidden' conceals any surplus text beyond the set 3 lines (I arbitrarily selected 3).

textOverflow: 'ellipsis' appends an ellipsis (...) to indicate where the text has been truncated.

The JSX Implementation

<div
    onClick={toggleTruncate}
    style={calculateTextStyle()}
>
This area contains my lengthy text.
</div>


// The following function determines the appropriate style for the above div.
 function calculateTextStyle() {
    return truncate ? textStyle : null;
  }

// By using React Hooks, I established a state variable to control whether the text should be truncated or displayed in full.
  const [truncate, setToggleTruncate] = React.useState(true);

// This function toggles the state variable 'truncate', providing a mechanism to expand or truncate the text with each click on the div element.
  function toggleTruncate() {
    setToggleTruncate(!truncate);
  }

Answer 3

Answer №2

If you're looking to achieve a text truncation effect using just CSS, one option is to utilize the line-clamp property. Keep in mind that this feature may not be fully supported across all browsers.

For a practical demonstration, refer to this CodePen example.

  display: block; /* Fallback for non-webkit */
  display: -webkit-box;
  max-width: 400px;
  height: $font-size*$line-height*$lines-to-show; /* Fallback for non-webkit */
  margin: 0 auto;
  font-size: $font-size;
  line-height: $line-height;
  -webkit-line-clamp: $lines-to-show;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;

Answer 4

If you're looking to achieve a text truncation effect using just CSS, one option is to utilize the line-clamp property. Keep in mind that this feature may not be fully supported across all browsers.

For a practical demonstration, refer to this CodePen example.

  display: block; /* Fallback for non-webkit */
  display: -webkit-box;
  max-width: 400px;
  height: $font-size*$line-height*$lines-to-show; /* Fallback for non-webkit */
  margin: 0 auto;
  font-size: $font-size;
  line-height: $line-height;
  -webkit-line-clamp: $lines-to-show;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;

Answer 5

Answer №3

To achieve this functionality in JavaScript, you can use the following code snippet. It involves splitting the input value into lines and wrapping additional lines in parentheses if there are more than one.

If you are working with a React component that includes an onChange prop, you may consider implementing a similar approach for handling user input.

const textAreaElement = document.getElementById('t')

textAreaElement.addEventListener('keyup', () => {
  const value = textAreaElement.value.replace(/[\(\)]/g, '')
  const splitLines = value.split(/(?:\r\n|\r|\n)/)
  
  const newValue = splitLines.length > 1 ?
    `${splitLines[0]}\n(${splitLines.slice(1, splitLines.length).join('\n')})` : splitLines[0]
  
  textAreaElement.value = newValue;
  
});

<textarea id="t"></textarea>

Answer 6

To achieve this functionality in JavaScript, you can use the following code snippet. It involves splitting the input value into lines and wrapping additional lines in parentheses if there are more than one.

If you are working with a React component that includes an onChange prop, you may consider implementing a similar approach for handling user input.

const textAreaElement = document.getElementById('t')

textAreaElement.addEventListener('keyup', () => {
  const value = textAreaElement.value.replace(/[\(\)]/g, '')
  const splitLines = value.split(/(?:\r\n|\r|\n)/)
  
  const newValue = splitLines.length > 1 ?
    `${splitLines[0]}\n(${splitLines.slice(1, splitLines.length).join('\n')})` : splitLines[0]
  
  textAreaElement.value = newValue;
  
});

<textarea id="t"></textarea>

Answer 7

Answer №4

If you're looking for an easy way to implement multi-line ellipsis, consider utilizing the antd typography component. Simply add a prop called ellipsis and specify the number of rows after which the text should be truncated.

<Paragraph ellipsis={{ rows: 3, expandable: true }}>
  Ant Design, a design language for background applications, is refined by Ant UED Team.
  Ant Design, a design language for background applications, is refined by Ant UED Team.
  Ant Design, a design language for background applications, is refined by Ant UED Team.
  Ant Design, a design language for background applications, is refined by Ant UED Team.
  Ant Design, a design language for background applications, is refined by Ant UED Team.
  Ant Design, a design language for background applications, is refined by Ant UED Team.
</Paragraph>

Answer 8

If you're looking for an easy way to implement multi-line ellipsis, consider utilizing the antd typography component. Simply add a prop called ellipsis and specify the number of rows after which the text should be truncated.

<Paragraph ellipsis={{ rows: 3, expandable: true }}>
  Ant Design, a design language for background applications, is refined by Ant UED Team.
  Ant Design, a design language for background applications, is refined by Ant UED Team.
  Ant Design, a design language for background applications, is refined by Ant UED Team.
  Ant Design, a design language for background applications, is refined by Ant UED Team.
  Ant Design, a design language for background applications, is refined by Ant UED Team.
  Ant Design, a design language for background applications, is refined by Ant UED Team.
</Paragraph>

Creating a multiline textarea with ellipsis using ReactJS

Answer №1

The Custom CSS for React

The JSX Implementation

Answer №2

Answer №3

Answer №4

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