instascan scanner as promise
I'am using instascan.min.js to use my webcam in FF. All working. How can i detect that a qrcode is read en then continue a script? I think it has something to do with promise but i can't figure it out.
steps are.
1. start scanner and wait for user to scan qrcode
2. Catch qrcode and save to sessionStorage
3. call another function
this is the sample code i've used:
function startScanner()
$('#preview').show();
let scanner = new Instascan.Scanner(
video: document.getElementById('preview'),
continuous: true,
mirror: false,
captureImage: false,
backgroundScan: true,
refractoryPeriod: 1000,
scanPeriod: 1
);
scanner.addListener('scan', function (content)
return content;
);
Instascan.Camera.getCameras().then(function (cameras)
if (cameras.length > 0)
scanner.start(cameras[0]);
else
console.error('No cameras found.');
).catch(function (e)
alert('No camera found which can be used.')
console.error(e);
);
i don't know how to catch the content var en make the script execute further.
javascript jquery html5
asked Nov 13 '18 at 16:30
WotikarWotikar
124
add a comment |
I'am using instascan.min.js to use my webcam in FF. All working. How can i detect that a qrcode is read en then continue a script? I think it has something to do with promise but i can't figure it out.
steps are.
1. start scanner and wait for user to scan qrcode
2. Catch qrcode and save to sessionStorage
3. call another function
this is the sample code i've used:
function startScanner()
$('#preview').show();
let scanner = new Instascan.Scanner(
video: document.getElementById('preview'),
continuous: true,
mirror: false,
captureImage: false,
backgroundScan: true,
refractoryPeriod: 1000,
scanPeriod: 1
);
scanner.addListener('scan', function (content)
return content;
);
Instascan.Camera.getCameras().then(function (cameras)
if (cameras.length > 0)
scanner.start(cameras[0]);
else
console.error('No cameras found.');
).catch(function (e)
alert('No camera found which can be used.')
console.error(e);
);
i don't know how to catch the content var en make the script execute further.
javascript jquery html5
asked Nov 13 '18 at 16:30
WotikarWotikar
124
add a comment |
I'am using instascan.min.js to use my webcam in FF. All working. How can i detect that a qrcode is read en then continue a script? I think it has something to do with promise but i can't figure it out.
steps are.
1. start scanner and wait for user to scan qrcode
2. Catch qrcode and save to sessionStorage
3. call another function
this is the sample code i've used:
function startScanner()
$('#preview').show();
let scanner = new Instascan.Scanner(
video: document.getElementById('preview'),
continuous: true,
mirror: false,
captureImage: false,
backgroundScan: true,
refractoryPeriod: 1000,
scanPeriod: 1
);
scanner.addListener('scan', function (content)
return content;
);
Instascan.Camera.getCameras().then(function (cameras)
if (cameras.length > 0)
scanner.start(cameras[0]);
else
console.error('No cameras found.');
).catch(function (e)
alert('No camera found which can be used.')
console.error(e);
);
i don't know how to catch the content var en make the script execute further.
javascript jquery html5
asked Nov 13 '18 at 16:30
WotikarWotikar
124
I'am using instascan.min.js to use my webcam in FF. All working. How can i detect that a qrcode is read en then continue a script? I think it has something to do with promise but i can't figure it out.
steps are.
1. start scanner and wait for user to scan qrcode
2. Catch qrcode and save to sessionStorage
3. call another function
this is the sample code i've used:
function startScanner()
$('#preview').show();
let scanner = new Instascan.Scanner(
video: document.getElementById('preview'),
continuous: true,
mirror: false,
captureImage: false,
backgroundScan: true,
refractoryPeriod: 1000,
scanPeriod: 1
);
scanner.addListener('scan', function (content)
return content;
);
Instascan.Camera.getCameras().then(function (cameras)
if (cameras.length > 0)
scanner.start(cameras[0]);
else
console.error('No cameras found.');
).catch(function (e)
alert('No camera found which can be used.')
console.error(e);
);
i don't know how to catch the content var en make the script execute further.
javascript jquery html5
javascript jquery html5
asked Nov 13 '18 at 16:30
WotikarWotikar
124
asked Nov 13 '18 at 16:30
WotikarWotikar
124
asked Nov 13 '18 at 16:30
WotikarWotikar
124
asked Nov 13 '18 at 16:30
WotikarWotikar
124
asked Nov 13 '18 at 16:30
WotikarWotikar
124
124
add a comment |
add a comment |
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