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Generate 1D and 2D barcodes
npm install barcode
Set it up and specify your type and options. The following 3 are the only required ones.
var barcode = require('barcode');
var code39 = barcode('code39', {
data: "it works",
width: 400,
height: 100,
});
Next choose from the three methods below how you want to output your barcode.
Stream
Get a stream of the final image data. you can collect this and save out a new PNG (default type), pipe it elsewhere, or save it to a CDN.
code39.getStream(function (err, readStream) {
if (err) throw err;
// 'readStream' is an instance of ReadableStream
readStream.pipe(CdnWriteStream);
});
File to disk
Save an image out to the file system, pretty simple. Just be sure to specify your outfile.
var outfile = path.join(__dirname, 'imgs', 'mycode.png')
code39.saveImage(outfile, function (err) {
if (err) throw err;
console.log('File has been written!');
});
Base64 encoded img
src
Often times, barcodes are single use for a single print or whatever. With this method, we can create one on the fly and just send the base64 encoded image to the browser through the HTML.
code39.getBase64(function (err, imgsrc) {
if (err) throw err;
// if we're using HTTP or another framework
res.end('<img src="' + imgsrc + '">');
});
Much of this will be due for a rewrite in the near future. 2.0 might make some API changes, but I will keep it as close to the original as possible.
Some goals for the rewrite:
I hope to eventually make it more maintainable this way instead of the endless amounts of spaghetti code.
FAQs
Generate 1D and 2D barcodes
The npm package barcode receives a total of 456 weekly downloads. As such, barcode popularity was classified as not popular.
We found that barcode demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
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