README.md

scroll-load-component

基于IntersectionObserver实现的React滚动加载组件

Installation

$ npm i --save scroll-load-component

Usage

import React from 'react'
import ScrollLoadComponent from 'scroll-load-component'

class MyComponent extends React.Component {
    render() {
        return (
            <div style={{ width: '100vw', height: '100vh', textAlign: 'center', overflow: 'auto' }} id="myComponent">
                {
                    Array(100).fill(1).map((v, i) =>
                        <ScrollLoadComponent
                            root={document.getElementById('myComponent')}
                            loading={<div style={{ height: '500px' }}>loading</div>}>
                            <div>
                                <img width={400} height={400} alt="img" src={"https://api.dujin.org/bing/1920.php"}></img>
                            </div>
                        </ScrollLoadComponent>)
                }
            </div>
        )
    }
}

export default MyComponent

Props

Prop	Type	Need	Description
root	Element	yes	The Element or Document whose bounds are used as the bounding box when testing for intersection. If no root value was passed to the constructor or its value is null, the top-level document's viewport is used.
rootMargin	string	no	An offset rectangle applied to the root's bounding box when calculating intersections, effectively shrinking or growing the root for calculation purposes. The value returned by this property may not be the same as the one specified when calling the constructor as it may be changed to match internal requirements. Each offset can be expressed in pixels (px) or as a percentage (%). The default is "0px 0px 50% 0px".
threshold	number	no	A list of thresholds, sorted in increasing numeric order, where each threshold is a ratio of intersection area to bounding box area of an observed target. Notifications for a target are generated when any of the thresholds are crossed for that target. If no value was passed to the constructor, 0 is used.
children	JSX.Element	yes	Children Dom.
loading	JSX.Element、React.ReactNode	no	Loading Dom. It is best to set a fixed height for it. The default is <p>loading...</p>.