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@ali1416/qrcode-encoder

v1.1.3

Published

二维码生成器JavaScript版

Downloads

17

Readme

QR Code Encoder For JavaScript 二维码生成器JavaScript版

License Node Support NPM Tag Repo Size

Node CI

简介

本项目迁移自ALI1416/QRCodeEncoder.Net,只编写了生成器部分,并对处理逻辑进行了大量优化,构建后qrcode-encoder.min.js文件仅16kb

注意:本项目不提供二维码绘制方法,如需绘制请看使用示例

其他语言项目

依赖导入

网页

https://unpkg.com/@ali1416/[email protected]/dist/qrcode-encoder.min.js

node

npm install @ali1416/[email protected]

方法和参数

二维码 QRCode

| 参数名 | 中文名 | 类型 | 默认值 | | ------------- | -------- | ------ | ---------- | | content | 内容 | string | (无) | | level | 纠错等级 | number | 0 | | mode | 编码模式 | number | (自动探测) | | versionNumber | 版本号 | number | (最小版本) |

版本 Version

| 参数名 | 中文名 | 类型 | 默认值 | | ------------- | ---------- | ------ | ---------- | | length | 内容字节数 | number | (无) | | level | 纠错等级 | number | (无) | | mode | 编码模式 | number | (无) | | versionNumber | 版本号 | number | (最小版本) |

掩模模板 MaskPattern

| 参数名 | 中文名 | 类型 | | ------- | -------- | --------- | | data | 数据 | boolean[] | | version | 版本 | Version | | level | 纠错等级 | number |

纠错等级 level

| 值 | 等级 | 纠错率 | | --- | ---- | ------ | | 0 | L | 7% | | 1 | M | 15% | | 2 | Q | 25% | | 3 | H | 30% |

编码模式 mode

| 值 | 模式 | 备注 | | --- | ---------------- | ---------------------------------------- | | 0 | NUMERIC | 数字0-9 | | 1 | ALPHANUMERIC | 数字0-9、大写字母A-Z、符号(空格)$%*+-./: | | 2 | BYTE(ISO-8859-1) | 兼容ASCII | | 3 | BYTE(UTF-8) | |

版本号 versionNumber

取值范围:[1,40]

使用示例

// node test-js.js
const QRCode = require("../dist/qrcode-encoder.js");
const content = "1234😀";
const qr = new QRCode(content);
console.log(QrMatrix2SvgPath(qr.Matrix, 10));

/**
 * 二维码boolean[][]转SVG路径
 * @param bytes boolean[][]
 * @param pixelSize 像素尺寸
 * @return string SVG
 */
function QrMatrix2SvgPath(bytes, pixelSize) {
  let length = bytes.length;
  let size = (length + 2) * pixelSize;
  let svg = "<svg width=\"" + size + "\" height=\"" + size + "\" viewBox=\"0 0 " + size + " " + size + "\" xmlns=\"http://www.w3.org/2000/svg\">\n";
  svg += "<path d=\"\n";
  for (let x = 0; x < length; x++) {
    for (let y = 0; y < length; y++) {
      if (bytes[x][y]) {
        let xx = (x + 1) * pixelSize;
        let yy = (y + 1) * pixelSize;
        svg += "M" + xx + " " + yy + "H" + (xx + pixelSize) + "V" + (yy + pixelSize) + "H" + xx + "z\n"
      }
    }
  }
  svg += "\"/>";
  svg += "</svg>\n";
  return svg;
}

更多请见测试

更新日志

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参考

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