react-barcode-reader

Introduction

A React component for reading barcode an QR codes from devices that are represent as keyboard to the system.

Demo

kybarg.github.io/react-barcode-reader/

Install

npm install --save react-barcode-reader

Example

import React, { Component } from 'react'
import BarcodeReader from 'react-barcode-reader'
 
class Test extends Component {
  constructor(props){
    super(props)
    this.state = {
      result: 'No result',
    }
 
    this.handleScan = this.handleScan.bind(this)
  }
  handleScan(data){
    this.setState({
      result: data,
    })
  }
  handleError(err){
    console.error(err)
  }
  render(){
 
    return(
      <div>
        <BarcodeReader
          onError={this.handleError}
          onScan={this.handleScan}
          />
        <p>{this.state.result}</p>
      </div>
    )
  }
}

Props

Prop	Type	Default Value	Description
onScan	func		Callback after detection of a successfull scanning (scanned string in parameter)
onError	func		Callback after detection of a unsuccessfull scanning (scanned string in parameter)
HonReceive	func		Callback after receiving and processing a char (scanned char in parameter)
onKeyDetect	func		Callback after detecting a keyDown (key char in parameter) - in contrast to onReceive, this fires for non-character keys like tab, arrows, etc. too!
timeBeforeScanTest	number	100	Wait duration (ms) after keypress event to check if scanning is finished
avgTimeByChar	number	30	Average time (ms) between 2 chars. Used to do difference between keyboard typing and scanning
minLength	number	6	Minimum length for a scanning
endChar	[number]	[9, 13]	Chars to remove and means end of scanning
startChar	[number]	[]	Chars to remove and means start of scanning
scanButtonKeyCode	number		Key code of the scanner hardware button (if the scanner button a acts as a key itself)
scanButtonLongPressThreshold	number	3	How many times the hardware button should issue a pressed event before a barcode is read to detect a longpress
onScanButtonLongPressed	func		Callback after detection of a successfull scan while the scan button was pressed and held down
stopPropagation	bool	false	Stop immediate propagation on keypress event
preventDefault	bool	false	Prevent default action on keypress event
testCode	string		Test string for simulating

Dev

Install dependencies

npm install

Build

npm run build

Demo

npm run storybook

Test

npm test

Linting

npm run lint

License

The MIT License (MIT)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.