Generate Codabar Barcodes in JavaScript

Generate Codabar Barcodes Online: You can test the quality of Aspose.BarCode generation for Codabar barcodes and get the results online.

Overview

Aspose.BarCode for JavaScript via C++ enables generating barcode labels according to the Codabar standard, which supports encoding numerical digits and six punctuation signs. The number of digits to be encoded in a barcode is unlimited. A Codabar barcode may contain four optional alphabet characters (usually A, B, C, or D) that serve as start and stop digits. This symbology provides four types of start characters and four types of stop characters, allowing the generation of 16 distinct barcodes with different start and stop character combinations for the same encoded information.

Input text for Codabar barcodes follows the format below:

[Start Character "A/B/C/D"] [Data Digits from the charset: "0-9" and "–$./:+"] [Stop Character "A/B/C/D"]

If you need any clarifications, feel free to reach out to Aspose Technical Support: ask your questions at Aspose.Barcode Forum or contact the Aspose Paid Support Helpdesk.

Start and Stop Symbols

The library allows for encoding start and stop characters independently using any of the four supported characters: A, B, C, or D. To define the required format, you can configure the CodabarStartSymbol and CodabarStopSymbol properties, which are part of the Codabar group in the class BarcodeParameters.
By default, both start and stop characters are set to “A”.

Below are examples of barcode labels generated with different combinations of start and stop characters:

Start and Stop Characters	A+A	B+B	C+C	D+D

The following code snippet demonstrates how to configure different combinations of start and stop characters in Codabar barcodes:

How to get BarCodeInstance

var gen = new BarCodeInstance.BarcodeGenerator("Codabar", "-12345-");
gen.Parameters.Barcode.XDimention = "2px";
//set start A and stop A
gen.Parameters.Barcode.Codabar.CodabarStartSymbol = BarCodeInstance.CodabarSymbol.A;
gen.Parameters.Barcode.Codabar.CodabarStopSymbol = BarCodeInstance.CodabarSymbol.A;
document.getElementById("img").src = gen.GenerateBarCodeImage();
//set start B and stop B
gen.Parameters.Barcode.Codabar.CodabarStartSymbol = BarCodeInstance.CodabarSymbol.B;
gen.Parameters.Barcode.Codabar.CodabarStopSymbol = BarCodeInstance.CodabarSymbol.B;
document.getElementById("img").src = gen.GenerateBarCodeImage();
//set start C and stop C
gen.Parameters.Barcode.Codabar.CodabarStartSymbol = BarCodeInstance.CodabarSymbol.C;
gen.Parameters.Barcode.Codabar.CodabarStopSymbol = BarCodeInstance.CodabarSymbol.C;
document.getElementById("img").src = gen.GenerateBarCodeImage();
//set start D and stop D
gen.Parameters.Barcode.Codabar.CodabarStartSymbol = BarCodeInstance.CodabarSymbol.D;
gen.Parameters.Barcode.Codabar.CodabarStopSymbol = BarCodeInstance.CodabarSymbol.D;
document.getElementById("img").src = gen.GenerateBarCodeImage();

gen.delete();

Checksum Settings

By default, the Codabar symbology does not require a mandatory checksum, but it supports two optional checksum algorithms: Mod10 and Mod16, with Mod16 being the more commonly used.

To enable a checksum for Codabar barcodes, set the IsChecksumEnabled property to EnableChecksum.Yes. After enabling, choose the checksum algorithm by configuring the CodabarChecksumMode property. By default, the Mod16 checksum is applied.

Below are sample barcode images generated with different checksum calculation settings:

Checksum Calculation	No Checksum	Mod10 Checksum	Mod16 Checksum

The following code sample demonstrates how to enable different checksum algorithms, Mod10 and Mod16, for Codabar barcodes.

How to get BarCodeInstance

var gen = new BarCodeInstance.BarcodeGenerator("Codabar", "-12345-");
gen.Parameters.Barcode.XDimention = "2px";
//set None checksum
gen.Parameters.Barcode.IsChecksumEnabled = BarCodeInstance.EnableChecksum.Default;
document.getElementById("img").src = gen.GenerateBarCodeImage();

//set Mod10 checksum
gen.Parameters.Barcode.IsChecksumEnabled = BarCodeInstance.EnableChecksum.Yes;
gen.Parameters.Barcode.Codabar.CodabarChecksumMode = BarCodeInstance.CodabarChecksumMode.Mod10;
document.getElementById("img").src = gen.GenerateBarCodeImage();
//set Mod16 checksum
gen.Parameters.Barcode.IsChecksumEnabled = BarCodeInstance.EnableChecksum.Yes;
gen.Parameters.Barcode.Codabar.CodabarChecksumMode = BarCodeInstance.CodabarChecksumMode.Mod16;
document.getElementById("img").src = gen.GenerateBarCodeImage();

gen.delete();