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mg-react-scrollspy

v1.0.9

Published

Scroll reveal by css transition props only

Downloads

2

Readme

mg-react-scrollspy

Description

This is a scrollspy wrapper for react components

Usage

import {ScrollSpy, TriggerMode } from "mg-react-scrollspy";
import {
  animationNames,
  animationTypes,
  createAnimatedComponent,
} from "./lib/animation";

const Card = function (props) {
  return <div style={props.style}>{props.name}</div>;
};

const Spied = createAnimatedComponent(() => (
  <Card style={{ color: "blue" }} name='Spied Card'/>
));

ReactDOM.render(
  <ScrollSpy
        render={({triggerIn, triggerOut, scrollMode}) => { console.log("scrollMode", scrollMode); return (
          <Spied
            duration={2}
            delay={1}
            type={animationTypes.ENTRANCE}
            name={animationNames.TOP}
            start={triggerOut}
          />
        )}}
        triggerMode={TriggerMode.BOTH}
      />,
  document.getElementById("root")
);

API

The api is simple

  1. Props

    1. render : function

    this is the function which is called to render the coponent you want to spy for scroll event it is called with the following object

    {triggerIn, triggerOut, scrollMode}
    1. triggerMode

    to indicate when you intend to trigger an action

    triggerMode = TriggerMode.IN // trigger when scrolling down and the coponent is gets into the viewport
    triggerMode = TriggerMode.OUT // trigger when scrolling up and the component is getting out of the viewport
    // default is 'in'
    1. thresholdDown

    this is the threshold in pixel to trigger when scrolling down default is 15

    Note. Strings are not valid here. only int e.g '10px' is invalid 10 is valid
    1. thresholdUp

    this is the threshold in pixel to trigger when scrolling up default is 15

    Note. Strings are not valid here. only int e.g '10px' is invalid 10 is valid