Skip to main content

How to use the Chrome BarcodeDetector from Chrome Shape Detection API in Angular?

I tried first using the BarcodeDetector in a plain JS project and it works just fine, but when trying to implement it in Angular it's not working. I get an error that the BarcodeDetector cannot be found. I would really appreciate it if someone can give me some guidance on how to approach this. I couldn't find any good example online

This is my plain js implementation:

let barcodeImg = document.querySelector('img');

let detectFunc = async() => {
    if (!('BarcodeDetector' in window))  {
        console.log("It's not");
    } else {
        console.log("Barcode supported");

        const barcodeDetector  = new BarcodeDetector();

        try {
            barcodeDetector.detect(barcodeImg)
            .then(detectedCodes  => {
                console.log(detectedCodes);
            })
        } catch (e) {
            console.log("Barcode detection failed");
        }
    }
} 

This is my Angular implementation:

export class AppComponent {

  BarcodeDetector: any;
  @ViewChild("barcodeImg") barcodeImg!: ElementRef;
  hasBarcodeDetector = '';

  constructor() {
    try {
      this.hasBarcodeDetector = 'BarcodeDetector' in window ? 'true' : 'false';
      const barcodeDetector = new BarcodeDetector();
      barcodeDetector.detect(this.barcodeImg.nativeElement).then(detectedCodes => {
        console.log(detectedCodes);
      })
    } catch (e) {
      console.log(e);
    }
  }
};
Via Active questions tagged javascript - Stack Overflow https://ift.tt/hWwKnml

Comments

Popular posts from this blog

How to show number of registered users in Laravel based on usertype?

i'm trying to display data from the database in the admin dashboard i used this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count(); echo $users; ?> and i have successfully get the correct data from the database but what if i want to display a specific data for example in this user table there is "usertype" that specify if the user is normal user or admin i want to user the same code above but to display a specific usertype i tried this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count()->WHERE usertype =admin; echo $users; ?> but it didn't work, what am i doing wrong? source https://stackoverflow.com/questions/68199726/how-to-show-number-of-registered-users-in-laravel-based-on-usertype

Why is my reports service not connecting?

I am trying to pull some data from a Postgres database using Node.js and node-postures but I can't figure out why my service isn't connecting. my routes/index.js file: const express = require('express'); const router = express.Router(); const ordersCountController = require('../controllers/ordersCountController'); const ordersController = require('../controllers/ordersController'); const weeklyReportsController = require('../controllers/weeklyReportsController'); router.get('/orders_count', ordersCountController); router.get('/orders', ordersController); router.get('/weekly_reports', weeklyReportsController); module.exports = router; My controllers/weeklyReportsController.js file: const weeklyReportsService = require('../services/weeklyReportsService'); const weeklyReportsController = async (req, res) => { try { const data = await weeklyReportsService; res.json({data}) console

How to split a rinex file if I need 24 hours data

Trying to divide rinex file using the command gfzrnx but getting this error. While doing that getting this error msg 'gfzrnx' is not recognized as an internal or external command Trying to split rinex file using the command gfzrnx. also install'gfzrnx'. my doubt is I need to run this program in 'gfzrnx' or in 'cmdprompt'. I am expecting a rinex file with 24 hrs or 1 day data.I Have 48 hrs data in RINEX format. Please help me to solve this issue. source https://stackoverflow.com/questions/75385367/how-to-split-a-rinex-file-if-i-need-24-hours-data