Comments (2)
I think you need to make sure the call to .removeFrom( htmlElement )
is done when .appendTo( htmlElement )
has finished executing, seems to happen async. Calling one right after the other and putting log calls in the browser support cache file like below shows the scanner
is undefined
. That was my issue.
function $stopWebcam(scanner){
console.log(scanner);
if (scanner.videoStream) {
var stream = scanner.videoStream;
stream.stop?stream.stop():stream.getTracks && stream.getTracks().forEach(function(track){
track.stop();
}
);
scanner.videoStream = null;
}
}
from jsqrscanner.
This is how I am doing it with Jquery Attached to modal shown and hide
jb_scanner = '';
//this function will be called when JsQRScanner is ready to use
$('#qrcode').on('shown.bs.modal', function JsQRScannerReady() {
//create a new scanner passing to it a callback function that will be invoked when
//the scanner succesfully scan a QR code
var jbScanner = new JsQRScanner(onQRCodeScanned);
//var jbScanner = new JsQRScanner(onQRCodeScanned, provideVideo);
//reduce the size of analyzed image to increase performance on mobile devices
jbScanner.setSnapImageMaxSize(300);
jbScanner.setScanInterval(300);
var scannerParentElement = document.getElementById("scanner");
if (scannerParentElement) {
//append the jbScanner to an existing DOM element
jbScanner.appendTo(scannerParentElement);
}
jb_scanner = jbScanner;
});
$('#qrcode').on('hide.bs.modal', function() {
if($('.qrPreviewVideo').length){
$('.qrPreviewVideo').remove();
var scannerParentElement = document.getElementById("scanner");
if(scannerParentElement){
jb_scanner.removeFrom(scannerParentElement);
jb_scanner.stopScanning();
}
}
})
from jsqrscanner.
Related Issues (20)
- iOS - Works in Browser but Does Not Work From Home Screen HOT 3
- Can't figure out how to use .removeFrom HOT 3
- Example page silently fails when served via unsecured connection (http) HOT 4
- Feature request: Code 128 and others HOT 12
- Does not seem to read QR-codes generated by https://www.qr-code-generator.com HOT 1
- QR Scaner Web
- It doesn't read a .club domain :( HOT 1
- how to use?
- Front facing camera HOT 1
- switch for flashlight
- Problem remembering selection HOT 1
- iOS - safari - front camera
- QR scanner?
- IE 11
- Scanner Doesnt Work On Chrome HOT 5
- Could not start video source on Samsung Note 10+ HOT 4
- [Violation] Avoid using document.write(). Warning HOT 3
- How to set css ?
- Scan with camera id
- License not applied correctly
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from jsqrscanner.