微信创建二维码_如何创建二维码
QR codes aren't 's cup of tea but I quite like them. If I see I want to or check out later, when on the road, it's super easy to take a quick -- it's much than to a URL and much than it in on a tiny .
If you need to QR codes, for a or , there's a nice : node-. Let's look at the wys and you can use to a QR code!
如果您需要为客户或您自己生成QR码，那么有一个非常不错项目： node- 。 让我们看看可用于创建QR码的不同wys和输出格式！
Start by the :
首先安装库：
yarn add
yarn add
创建QR码图像数据 ( QR Code Image Data)
With the QR code , you can a data URI for the QR code which you can use with an
:
使用可用的QR码实用程序，可以为QR码生成数据URI，可以将其与
元素一起使用：
const generateQR = async text => {try {console.log(await QRCode.toDataURL(text))} catch (err) {console.error(err)}
}generateQR("https://davidwalsh.name");/*
data:image/png;base64,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
*/
在终端中创建QR码 ( a QR Code in )
If you want to see the QR code in the via Node.js, you can do so by a :
如果您想通过Node.js在终端中查看QR码，可以通过传递一个对象来实现：
const generateQR = async text => {try {console.log(await QRCode.toString(text, {type: 'terminal'}))} catch (err) {console.error(err)}
}
创建二维码图像 ( a QR Code Image)
You can a PNG, SVG, or UTF8 image for the QR code:
您可以为QR码生成PNG，SVG或UTF8图像：
const generateQR = async text => {try {await QRCode.toFile('./davidwash-qr-code.png', text);} catch (err) {console.error(err)}
}
在画布上创建QR码 ( a QR Code on )
If you use a like and , you can use on the side:
如果使用和之类的实用程序，则可以在客户端使用 ：
var canvas = document.getElementById('canvas');
const generateQR = async text => {try {await QRCode.toCanvas(canvas, text)} catch (err) {console.error(err)}
}generateQR("https://davidwalsh.name");
This QR code also you to much more than I've shown here, data and with a of . If you need to a QR code, look no than node-qr code!
这个很棒的QR代码库还允许您创建比我在这里显示的更多的内容，包括二进制数据和多种选择。 如果您需要创建QR码，请不要超过node-qr码！
翻译自:
微信创建二维码
