React Slot Counter 🎰 - Make Your UI Count! ✨

🚀 Elevate Your UI with Dynamic, Eye-Catching Counters - React Slot Counter

Make Your Numbers Pop 🌟: Simple and Dynamic Counters for Your UI

🚀 What's New in 3.0.0?

Key Changes

• New Prop: speed: Adjust animation speed more intuitively with the new speed prop.
• New Prop: delay: Each column's animation start can now be delayed using the delay prop.

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💡 Why React Slot Counter?

React Slot Counter is your go-to solution for adding animated, interactive counters to your web applications. With customizable animations, diverse input compatibility, and easy integration, it's designed to make your numbers not just visible but visually striking.

🌟 Key Features

• Versatile Inputs: Beyond numbers—strings, JSX elements, and more.
• Animation on Demand: Updates animate only the changed elements.
• Sequential Animation: For that extra touch of order and purpose.
• Total Customizability: Tailor the look and feel to fit your app perfectly.

📦 Quick Installation

npm install react-slot-counter

🛠 Easy Usage

Import SlotCounter and use it in your component. Here's a simple example:

import React from 'react';
import SlotCounter from 'react-slot-counter';

function App() {
  return (
    <>
      <SlotCounter value={123456} />
      <SlotCounter value={36.5} />
      <SlotCounter value="1,234,567" />
      <SlotCounter value={['1', '2', '3', '4', '5', '6']} />
      <SlotCounter value="??????" />
    </>
  );
}

export default App;

🎥 Live Demo

Explore more at the demo page.

📝 Comprehensive Props

Detailed props for customizing SlotCounter to fit your UI needs:

• value (required): Display numbers, strings, or JSX elements.
• duration: Control the speed of the animation.
• animateUnchanged: Choose to animate all or only changed characters.
• And many more!

See full props list

Prop	Type	Default	Description
value (required)	number | string | string[] | JSX.Element[]		The value to be displayed. It can be a number or a string with numbers and commas.
startValue	number | string | string[] | JSX.Element[]		The initial value to be displayed before the animation starts. It sets the beginning of the slot machine animation.
startValueOnce	boolean	false	If set to true, the animation starts from the startValue only for the first render. For subsequent animations, it starts from the last value.
duration	number	0.7	The duration of the animation in seconds.
speed	number	1.4	The speed of counter when running.
delay	number		The delay time of each columns
dummyCharacters	string[] | JSX.Element[]	Defaults to random numbers from 0 to 9	An array of dummy characters to be used in the animation.
dummyCharacterCount	number	6	The number of dummy characters to be displayed in the animation before reaching the target character.
autoAnimationStart	boolean	true	Determines whether the animation should start automatically when the component is first mounted.
animateUnchanged	boolean	false	Determines whether to animate only the characters that have changed.
hasInfiniteList	boolean	false	Determines whether the list should appear as continuous, with the end of the target character seamlessly connected to the beginning.
containerClassName	string		The class name of container.
charClassName	string		The class name of each character.
separatorClassName	string		The class name of the separator character (. or ,).
valueClassName	string		The class name for the value of the slot, making it possible to customize the styling and visibility of the value.
numberSlotClassName	string		The class name for the number slot, allowing you to customize the styling of the number slot.
numberClassName	string		The class name for the number, allowing you to customize the styling of the number.
sequentialAnimationMode	boolean	false	Determines if the animation should increment or decrement sequentially from the startValue to value instead of random animation.
useMonospaceWidth	boolean	false	Ensures that all numeric characters occupy the same horizontal space, just like they would in a monospace font.
direction	'bottom-top' | 'top-bottom'	'bottom-top'	Sets the direction of the slot machine animation. Accepted values are 'bottom-top' and 'top-bottom'.
debounceDelay	number	0	Specifies the delay in milliseconds for debouncing animations. When the value changes rapidly, it allows the animation to execute smoothly.
animateOnVisible	boolean | rootMargin: string, triggerOnce: boolean	false | rootMargin: '0px', triggerOnce: false	Activates the animation when the component is visible in the viewport. rootMargin sets the margin around the viewport for triggering the animation, while triggerOnce determines if the animation should occur only once (true) or every time the component becomes visible (false).
startFromLastDigit	boolean	false	Determines the order in which the digits animate. When set to true, the animation will start from the last digit and progress backward to the first digit. When false, the animation will start from the first digit and proceed forward.

🤖 Advanced Ref Usage

Manipulate the behavior with refreshStyles and startAnimation methods.

Learn more

Method	Type	Description
refreshStyles	() => void	Recalculates the styles for the SlotCounter component. Useful for scenarios where the font size changes or the window is resized, forcing a re-render to apply the new styles.
startAnimation	(options?: Options) => void	Initiates the animation of the component with optional customization parameters.
reload	() => void	Forces a complete re-render of the SlotCounter component. Useful for scenarios where you need to reset the component's state or refresh its appearance after dynamic style changes.

Options for startAnimation Method

Property	Type	Optional	Default	Description
duration	number	Yes	None	A number representing the duration of the animation in seconds. Overrides the duration prop if provided.
dummyCharacterCount	number	Yes	None	A number indicating how many dummy characters should be shown before the target character. Overrides the dummyCharacterCount prop if provided.
direction	string	Yes	'bottom-top'	Sets the direction of the slot machine animation. Accepted values: 'bottom-top', 'top-bottom'. Overrides the direction prop if provided.

Ref Example:

import React, { useRef } from 'react';
import SlotCounter from 'react-slot-counter';

function App() {
  const counterRef = useRef(null);

  const handleStartClick = () => {
    counterRef.current?.startAnimation();
  };

  return (
    <>
      <SlotCounter value={123456} ref={counterRef} />
      <button onClick={handleStartClick}>Start</button>
    </>
  );
}

export default App;

📜 Stay Updated

Check out our CHANGELOG.md for the latest updates.

👨‍💻 Join the Community

Your contributions are welcome! Let's make this project even better together.

✨ Contributors

Thanks go to these wonderful people:

Max

Nick - Ngoc Pham

Vincent Huang

larsjuvik

Bảo Hà.

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📄 License

This project is proudly licensed under the MIT License.