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jr-qrcode

v1.2.1

Published

qrcode generator

Downloads

1,432

Readme

二维码js生成库

把字符串生成二维码,并以Base64 URL形式输出。 支持白色二维码,即反色二维码。

兼容性

插件使用了H5的canvas特性进行二维码绘制,最后输出base64 url,因此本插件要求运行环境支持canvas特性即可。

安装

npm install jr-qrcode

插件引用

传统引用

<script type="text/javascript" src="dist/jr-qrcode.js"></script>

<script>
  var imgBase64 = jrQrcode.getQrBase64('hello world');
</script>

模块化引用(比如:webpack)

// 方法1:全局引用(window.jrQrcode)
require('jr-qrcode');

// 方法2:变量引用
var jrQrcode = require('jr-qrcode');

// import 引入
import jrQrcode from "jr-qrcode";

用法

方法调用,传入字符串,获取 base64 编码的图片 URL

比如:

var imgBase64 = jrQrcode.getQrBase64('hello world');

接口定义:

var imgBase64 = jrQrcode.getQrBase64(text, options);

/**
@param: text: 要生成二维码的字符,支持中文
@param: options: {
  padding       : 10,   // 二维码四边空白(默认为10px)
  width         : 256,  // 二维码图片宽度(默认为256px)
  height        : 256,  // 二维码图片高度(默认为256px)
  correctLevel  : QRErrorCorrectLevel.H,    // 二维码容错level(默认为高)
  reverse       : false,        // 反色二维码,二维码颜色为上层容器的背景颜色
  background    : "#ffffff",    // 二维码背景颜色(默认白色)
  foreground    : "#000000"     // 二维码颜色(默认黑色)
}
@return: 生成的二维码Base64 URL
*/

二维码容错级别

QRErrorCorrectLevel = {
  L : 1,
  M : 0,
  Q : 3,
  H : 2
};

Typescript 支持

该项目已支持 TS 的引用,类型声明你可以在这里找到:jr-qrcode.d.ts

Use cases

If you are using jrQrcode in production, just tell us.