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JavaScript API Reference - BarcodeReader Decode Methods

Method Description
decode Decode barcodes from images, binary data, URLs, and more.
decodeBase64String Decode barcodes from a base64 encoded string.
decodeBuffer Decode barcodes from raw buffer.
decodeUrl Decode barcodes from a URL.

decode

Decode barcodes from various sources, including binary data, images, base64 (with MIME type), URLs, etc.

decode(source) returns Promise

Parameters

source *Blob Buffer ArrayBuffer Uint8Array Uint8ClampedArray HTMLImageElement HTMLCanvasElement HTMLVideoElement string*

Return Value

Promise<TextResult[]>

Sample

Read barcodes from live camera

decodeBase64String

Decode barcodes from a base64 string with or without MIME type. For example, with MIME type specified: data:image/jpg;base64,Xfjshekk... and without: Xfjshekk....

decodeBase64String(base64) returns Promise

Parameters

base64 string

Return Value

Promise<TextResult[]>

Sample

Read barcodes from live camera

decodeBuffer

Decode barcodes from raw buffer.

decodeBuffer(buffer, width, height, stride, format, config) returns Promise

Parameters

buffer Uint8Array | Uint8ClampedArray | ArrayBuffer | Blob | Buffer
width number
height number
stride number
format EnumImagePixelFormat
configoptional any

Return Value

Promise<any>

Sample

Read barcodes from live camera

decodeUrl

Decode barcodes from URLs. The URL source must be in the same domain or allows Cross-Origin Resource Sharing (CORS).

decodeUrl(url) returns Promise

Parameters

url string

Return Value

Promise<TextResult[]>

Sample

Read barcodes from live camera

This page is compatible for:

Version 7.5

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