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@kylelwm/react-ui-scrollspy

v1.1.1

Published

Simple, Easy To Use and Customisable ScrollSpy component for react with callback, typescript and throttle support among others

Downloads

15

Readme

ScrollSpy Demo

React UI ScrollSpy

npm npm License MIT PRs Welcome

React TypeScript NPM

Make sure you ⭐️ this repository if you find it helpful or interesting :)

✨ Installation

React 18

npm install --save react-ui-scrollspy

OR

yarn add react-ui-scrollspy

React 17 and below

npm install --save [email protected]

OR

yarn add [email protected]

🎞 Demo

Try it your self here!

| Demo 1 | Demo 2 | | :-------------------------------------------- | :--------------------------------------------- | | ScrollSpy Demo | ScrollSpy Demo |

⚙️ Usage

  1. In your navigation component
<div>
  <p data-to-scrollspy-id="first">Section 1</p>
  <p data-to-scrollspy-id="second">Section 2</p>
</div>
  1. Wrap the elements you want to spy on in the <ScrollSpy> component.
import ScrollSpy from "react-ui-scrollspy";

<ScrollSpy>
  <div id="first">
    Lorem ipsum dolor sit amet consectetur adipisicing elit. Aut dolores
    veritatis doloremque fugit. Soluta aperiam atque inventore deleniti,
    voluptatibus non fuga eos magni natus vel, rerum excepturi expedita.
    Tempore, vero!
  </div>
  <div id="second">
    Lorem ipsum dolor sit amet consectetur adipisicing elit. Aut dolores
    veritatis doloremque fugit. Soluta aperiam atque inventore deleniti,
    voluptatibus non fuga eos magni natus vel, rerum excepturi expedita.
    Tempore, vero!
  </div>
</ScrollSpy>
  1. Write styles for when the navigation element which is active in your index.css
.active-scroll-spy {
  background-color: yellowgreen;
  border-radius: 15px;
}

📝 Notes

Incase the ScrollSpy is not working the way you expected, you can try the following:

  • Reduce the value of scrollThrottle.

  • If your page contains a navbar a header consider adding the following CSS

html {
  scroll-padding-top: 120px; /* height of your navbar */
}

💡 Props

🔧 Children

| Attributes | Type | Description | Default | Required | | :--------- | :---------- | :------------------------------------------------- | :------ | :------- | | children | ReactNode | Each direct child Element should contain an id | - | yes |

🔧 Refs

| Attributes | Type | Description | Default | Required | | :------------------------- | :------------------------------------------------ | :------------------------------------------------------------------------------------------------------ | :------ | :------- | | navContainerRef | MutableRefObject<HTMLDivElement | null> | ref to your navigation container containing items with data-to-scrollspy-id attributes | - | no | | parentScrollContainerRef | MutableRefObject<HTMLDivElement | null> | If you want to spy only on a particular scrollable container (Element) then pass its ref to this prop | - | no |

🔧 Throttle

| Attributes | Type | Description | Default | Required | | :--------------- | :------- | :-------------------------------------------------------------------------------------------------------------------------- | :------ | :------- | | scrollThrottle | number | In milliseconds to throttle the onscroll event. Lower the number, better the response time, higher the performance cost | 300 | no |

🔧 Callback

| Attributes | Type | Description | Default | Required | | :----------------- | :--------------------- | :--------------------------------------------------------------------------------------------------------------------------------- | :------ | :------- | | onUpdateCallback | (id: string) => void | Executes this function whenever you scroll to a new ScrollSpy child Element, callback returns the id of that Element as well | - | no |

🔧 Offsets

| Attributes | Type | Description | Default | Required | | :------------- | :------- | :-------------------------------------------------------------------------------------------------------------- | :------ | :------- | | offsetTop | number | Spy will be fired when it has been scrolled offsetTop beyond 50% to the top of the containing element | 0 | no | | offsetBottom | number | Spy will be fired when it has been scrolled offsetBottom beyond 50% to the bottom of the containing element | 0 | no |

🔧 Customize Attributes

| Attributes | Type | Description | Default | Required | | :----------------- | :-------- | :-------------------------------------------------------------------------------------------------------- | :-------------------- | :------- | | useDataAttribute | string | To customize the string after data- | "to-scrollspy-id" | no | | activeClass | string | To customize the class added when the Element in view | "active-scroll-spy" | no | | useBoxMethod | boolean | Set to false if you want your spy to be active only if more than 50% of that div is in the viewport | true | no | | updateHistoryStack | boolean | Set to false to disable the URL getting automatically updated when scrolling | true | no

📝 Authors