react-change-highlight

react-change-highlight

React Change Highlight is a react component to highlight changes in the wrapped component to enhance the UX and grap the focus of the user into the changed value of some parts like the cart in an e-commerce application for example.

This is a real use case we are using in our company

You can play around with it on this sandbox codesandbox.io/react-change-highlight

Install

yarn add react-change-highlight

or

npm install react-change-highlight

Usage

Basically you need to wrap the components you want to highlight on change inside ChangeHighlight element (default import) then add ref attribute to each child in this component which you want to highlight when they got their content changed.

In the following example the count variable comes from state, so when ever that function setCount() is called with any different value the background of that wrapped div will be changed as a default action, but actually it can be any kind of animation you make into the class you will pass to highlightStyle attribute.

import ChangeHighlight from "react-change-highlight";

export default () => {
  const [count, setCount] = useState(0);

  return (
    <ChangeHighlight>
      <div ref={React.createRef()}>{count}</div>
    </ChangeHighlight>
  );
};

Default styling for highlighting in case the user didn't use a custom styling using the highlightStyle property is rc-highlight class and it is as follow:

.rc-highlight {
  background-color: #f8ffb4;
  transition: all 0.5s ease-in-out;
}

SSR (server-side rendering)

In case of using this module in a server-side rengering app, you should make sure to create and pass your own className to the highlightStyle attribute, and to make some hint for you, add ssr attribute to the ChangeHighlight element, so it can give you a hint to add a class in your console as a warning like this.

⚠️ "react-change-highlight", As you're using server-side rendering, it's a must to create and pass your css class to the highlightStyle attribute for "ChangeHighlight" component

Props

Property	Type	Default	Description
showAfter	number	500	number of milli seconds before start highlighting
hideAfter	number	2500	number of milli seconds before ending highlighting
containerClassName	string		className for component container
highlightStyle	string		className for highlighing content (a must in case of SSR)
disabled	boolean	false	weather you need to disable highlighting
ssr	boolean	false	you need to pass this in case of using it with server-side rendering. (gives a hint for adding style)

Contributors ✨

Thanks goes to these wonderful people (emoji key):

Medhat Dawoud 💻 📝 📖

Islam ElHakmi 💻

Mohamed Gamal 🐛 💻

This project follows the all-contributors specification. Contributions of any kind welcome!

Changelog

v1.2.2 (20 Nov 2019)

• Fix issue with elements with no ref.