Mastering Cascader: How to Turn Off Filter Highlighting

<Cascader 
  options={options} 
  onChange={(value, selectedOptions) => console.log(selectedOptions)} 
  filter={(search, item) => item.label.includes(search)} 
/>

<Cascader 
  options={options} 
  onChange={(value, selectedOptions) => console.log(selectedOptions)} 
  filter={(search, item) => item.label.includes(search)} 
  renderFormItem={(option, index) => <div>{option.label}</div>} 
/>

` element with the label text, effectively disabling the default highlighting behavior.

Alternative Solutions for Custom Highlighting

While turning off filter highlighting is a simple solution, you may want to implement custom highlighting logic that better suits your application’s requirements.

One approach is to use a custom highlighting function that wraps the matched text in a specified element, such as a ``. You can then use CSS to style the highlighted text.

<Cascader 
  options={options} 
  onChange={(value, selectedOptions) => console.log(selectedOptions)} 
  filter={(search, item) => item.label.includes(search)} 
  renderFormItem={(option, index) => {
    const label = option.label;
    const match = label.match(new RegExp(search, 'gi'));
    return <div>
      {match ? <span>{match[0]}</span> : label}
    </div>;
  }} 
/>

In the code snippet above, the `renderFormItem` prop uses a custom highlighting function to wrap the matched text in a `` element. You can then use CSS to style the highlighted text.

Another approach is to use a third-party library, such as react-highlight-words, to provide a more advanced highlighting functionality.

<Cascader 
  options={options} 
  onChange={(value, selectedOptions) => console.log(selectedOptions)} 
  filter={(search, item) => item.label.includes(search)} 
  renderFormItem={(option, index) => 
    <Highlight>
      <Highlighter 
        highlightClassName="highlight" 
        searchWords={[search]} 
        caseSensitive={false} 
      >
        {option.label}
      </Highlighter>
    </Highlight>
  } 
/>

In the code snippet above, the `react-highlight-words` library is used to highlight the matched text with a custom class name.

Best Practices for Custom Highlighting

When implementing custom highlighting logic, keep the following best practices in mind:

1. Keep it simple: Avoid complex highlighting logic that can affect performance.

2. Use semantic HTML: Use HTML elements that provide meaning to the structure of your content, such as `` or ``, to wrap the highlighted text.

3. Style with CSS: Use CSS to style the highlighted text, rather than relying on inline styles or JavaScript.

4. Test thoroughly: Test your custom highlighting logic with different search queries and edge cases to ensure it works as expected.

Conclusion

Turning off filter highlighting in Cascader is a straightforward process, but it’s just the beginning. By implementing custom highlighting logic, you can provide a more tailored experience for your users and enhance the overall usability of your application.

Remember to keep your custom highlighting logic simple, semantic, and well-tested to ensure a seamless user experience.

Final Thoughts

If you’re looking for more advanced filtering and highlighting features, consider exploring other libraries and frameworks that provide more extensive functionality.

Do you have any questions or concerns about turning off filter highlighting in Cascader? Share your thoughts in the comments below!

• Learn more about Cascader
• Explore custom highlighting libraries
• Join the discussion on GitHub

Happy coding!

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Frequently Asked Questions

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