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@xiaoxili/react-better-image-cc

v0.1.1

Published

Webp图片压缩、图片懒加载组件

Downloads

5

Readme

@xiaoxili/react-better-image-cc

Webp图片压缩、图片懒加载组件

NPM JavaScript Style Guide

基础原理

目前版本是基于七牛云、腾讯云数据万象的图片压缩及图片转换方法。

各厂商均已支持图片压缩和图片格式转换。

Install

npm install --save @xiaoxili/react-better-image-cc

注意点

图片懒加载组件依赖 IntersectionObserver 来判断是否在视图之内,这个方法在老旧浏览器中不支持,需要在 app.js 中导入 intersection-observer

npm install --save intersection-observer
// app.js
import 'intersection-observer'

Usage

图片懒加载组件

import React, { Component } from 'react'

import BetterImage from '@xiaoxili/react-better-image-cc'

class Example extends Component {
  render() {
    return (
      <>
        {/* 图片比例确定,宽高不定,需要覆盖的样式较多。 */}
        <div className="image">
          <BetterImage ratio={9 / 16} src={'图片地址'} maxImageWidth={1200} />
        </div>
        {/* 图片区域宽高确定 */}
        <div className='image'>
          <BetterImage width={200} height={112} src={'图片地址'} maxImageWidth={800} />
          <BetterImage ratio={9 / 16} src={'图片地址'} maxImageWidth={1200} />
        </div>
      </>
    )
  }
}

Webp 图片压缩及判断 Webp 的方法

  • getWebpByWidth('图片地址', 1000) :自动获取 Webp 格式图片,并且按照宽度缩放
  • getImgByWidth('图片地址', 1000) :只支持按照宽度缩放
  • getWebpSupport() 判断是否支持 Webp 图片格式,需要注意的是,通过加载一张 Base64 Webp 图片,有一定的延迟。
  • checkCanvasWebP() 判断是否支持 Webp 图片格式,但在 Safari 最新版本浏览器中无效。
import { checkCanvasWebP, getWebpByWidth, getWebpSupport } from '@xiaoxili/react-better-image-cc'

const a = getWebpByWidth('图片地址', 1000);
const b = getImgByWidth('图片地址', 1000);

console.log('是否支持Webp', getWebpSupport())
console.log('是否支持Webp', checkCanvasWebP())

License

MIT © https://github.com/shenghanqin/