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react-roll-container

v1.0.1

Published

采用比IScroll更加轻量的JRoll封装的React组件,可以作为移动端DOM内部CSS3滚动的组件。

Readme

react-roll-container

采用比IScroll更加轻量的JRoll封装的React组件,可以作为移动端DOM内部CSS3滚动的组件。

它是为了解决移动端body中有多层滚动重叠导致的卡顿和点击穿透问题,比如支付宝app里面的饿了么网站,就存在双层滚动时候的穿透问题。

常用在以下地方:

1、弹框内部的滚动

2、多列表的滚动

3、类似京东移动端垂直固定导航的滚动: https://so.m.jd.com/category/all.html

4、其他可能的场景

安装

npm i --save react-roll-container

用法

1、整个页面采用CSS3垂直滚动

import MyJRoll from 'react-roll-container'

class Component extends React.Component {
    state = {
        height: '100vh'
    }
    render() {
        const { height } = this.state
        return (
            <MyJRoll height={height + 'px'}>
                {/*子组件*/}
            </MyJRoll>
        )
    }
}

2、组件内部的子组件采用CSS3垂直滚动

import MyJRoll from 'react-roll-container'

class Component extends React.Component {
    state = {
        height: 0
    }
    componentDidMount() {
        this.getScrollHeight()
    }
    getScrollHeight = () => {
        //主要是求出滚动区域的实际高度,如果已知实际高度是个固定值,则不需要设置state
        //如果实际高度需要根据一些特定的加减法求出来的,则通过state设置
        
        //例如:
        const header = document.querySelector('.header')
        this.setState(() => ({height: getClientHeight - header.offsetHeight}))
    }
    render() {
        const { height } = this.state
        return (
            <div>
                <Header>
                    头部信息
                </Header>
                <MyJRoll height={height + 'px'}>
                    <NavList />         
                </MyJRoll>
            </div>
        )
    }
}

3、弹框组件采用CSS3垂直滚动

我们知道,在移动端做弹框内部的滚动的时候,会有点击穿透问题,如果采用MyJRoll组件来包装弹框,则不会有这个问题

4、更多使用场景需自行发现

可配置信息

height:这个是最重要的配置,因为浏览器需要知道你的滚动区域的实际高度,有时候js执行后计算高度不准确,可能是因为你的DOM还没有渲染完成,就像使用JQuery的时候要ready才能保证安全

maxHeight:通常你不需要管它

bgColor:用来设置滚动区域的背景色,默认是 '#f6f6f6'