html中直接使用

/**
* Skipped minification because the original files appears to be already minified.
* Original file: /npm/qrcode@1.5.1/build/qrcode.js
*
* Do NOT use SRI with dynamically generated files! More information: https://www.jsdelivr.com/using-sri-with-dynamic-files
*/
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f=ut(n,o);a(null,t(f,r,o))}catch(t){a(t)}}var lt=ut,vt=dt.bind(null,ft.render),pt=dt.bind(null,ft.renderToDataURL),wt=dt.bind(null,(function(t,r,e){return gt(t,e)})),mt={create:lt,toCanvas:vt,toDataURL:pt,toString:wt};return t.create=lt,t.default=mt,t.toCanvas=vt,t.toDataURL=pt,t.toString=wt,Object.defineProperty(t,"__esModule",{value:!0}),t}({});
<script>
QRCode.toDataURL(
"https://www.baidu.com/",
{ errorCorrectionLevel: "H" },
function (err, url) {
console.log("QRCode", url);
}
);
</script>

工程化项目中使用

安装

npm i qrcode

引入

import QRCode from "qrcode"; //引入

使用

qrcodeUrl= await QRCode.toDataURL(
"https://www.baidu.com"
);