| onDecodeResult |
function |
|
Called when a barcode is decoded. Receives a
DetectedBarcode
.
|
| onDecodeError |
function |
|
Called when decoding throws an error. Empty frames (no barcode found) do not trigger this callback.
|
| onError |
function |
|
Called when camera or WASM setup fails, e.g. missing permissions or an insecure context.
|
| formats |
BarcodeFormat[] |
all formats |
Barcode symbologies to scan. See
barcode-detector
for supported values.
|
| wasmUrl |
string |
jsDelivr CDN |
URL of zxing_reader.wasm for self-hosting. Passed to
prepareWasm() before scanning starts.
|
| trySkew |
boolean | number[] |
false |
Retry decoding at rotation angles when a frame fails. Pass
true to use the default angles, or an array of angles in degrees.
|
| timeBetweenDecodingAttempts |
number |
300 |
Milliseconds to wait between decoding attempts.
|
| constraints |
MediaStreamConstraints |
{ video: { facingMode: 'environment' }, audio: false } |
Constraints passed to getUserMedia.
|
| deviceId |
string |
|
Explicit camera device ID to stream from.
|
| paused |
boolean |
false |
Stops the camera stream when true.
|