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qrcode-generator-es

v1.0.3

Published

ES二维码生成模块

Downloads

17

Readme

qrcode-generator-es

介绍

基于 qr-code-generator-library 的二维码生成器,支持 tree-shaking

安装

npm install qrcode-generator-es --save

使用

import {
  QRCodeRender,
  renderToSvg,
  renderToTable,
  renderToCanvas,
  renderToImg,
} from "./index";

const $canvas = document.getElementById("canvas");
const qrcode = new QRCodeRender({
  renderFn: renderToCanvas,
  text: "Hello World!!!",
  el: $canvas,
});
qrcode.render();

参数

| 参数名 | 类型 | 默认值 | 说明 | 必填 | | ---- | ---- | ---- | ---- | ---- | | text | string | - | 二维码内容, 如果不传, 则需要手动调用 addData 函数 | 否 | | size | number | 100 | 生成的二维码大小 | 否 | | level | string | L | 二维码纠错等级, L (默认)、MQH | 否 | | fill | string | #000000 | 二维码填充色 | 否 | | background | string | #ffffff | 二维码背景色 | 否 | | el | HTMLElementstring | - | 渲染的元素, 可以是 canvas 或者 img 元素, 或者 选择器 | 否 | | renderFn | function | - | 渲染函数 | 是 | | icon | { src: string, size?: number } | - | 二维码中间的图标 | 否 |

渲染函数

  1. renderToSvg: 渲染到 svg 元素
  2. renderToTable: 渲染到 table 元素
  3. renderToCanvas: 渲染到 canvas 元素
  4. renderToImg: 渲染到 img 元素

添加二维码内容

如果二维码内容初始化了后,后续会根据接口动态变化的时候,可以根据 API 手动调整

1. 添加二维码内容

import {
  QRCodeRender,
  renderToCanvas
} from "./index";

const qrcode = new QRCodeRender({
  renderFn: renderToCanvas,
  text: "Hello",
  el: '#canvas',
});
qrcode.render();

qrcode.addData(' World')

重置二维码内容

添加二维码内容调用的是 addData 函数,重置则调用 resetData 函数

qrcode.resetData('new data')

addDataresetData 函数不需要手动调用 render 函数,会自动调用