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use-scan-detection
Advanced tools
Readme
A react hook for detecting barcode scanners in the DOM.
npm i use-scan-detection
useScanDetection({
onComplete: (code) => { console.log(code) }
});
Parameters are supplied by a config object:
Parameter | Description |
---|---|
averageWaitTime | Average time between characters in milliseconds. Used to determine if input is from keyboard or a scanner. Defaults to 50 . |
timeToEvaluate | Time to evaluate the buffer after each character. |
startCharacter | Optional. Character that barcode scanner prefixes input with. Buffer only starts if this character is read first. |
endCharacter | Optional. Character that barcode scanner suffixes input with. Buffer is evaluated early if this character is read. Defaults to line return and escape. |
onComplete | Function that is called when a complete barcode is scanned. Function is called with a single string which is the complete code. |
onError | Optional. Function that is called when an incomplete barcode is scanned. Function is called with a single string which is the incomplete code. |
minLength | Minimum number of characters for a barcode to successfully read. Should be greater than 0. Defaults to 1 . |
ignoreIfFocusOn | Optional. DOM element that if focused prevents codes from being read. |
stopPropagation | Whether to call stopPropagation on each key event. Defaults to false . |
preventDefault | Whether to call preventDefault on each key event. Defaults to false . |
container | DOM element to listen for keydown events in. Defaults to document . |
This hook returns nothing.
import React, { useState } from 'react';
import useScanDetection from 'use-scan-detection';
const Input = () => {
const [value, setValue] = useState("");
useScanDetection({
onComplete: setValue,
minLength: 13 // EAN13
});
return (
<input
value={value}
type="text"
/>
);
};
export default Input
MIT Licensed
FAQs
A react hook for detecting barcode scanner input.
The npm package use-scan-detection receives a total of 1,093 weekly downloads. As such, use-scan-detection popularity was classified as popular.
We found that use-scan-detection demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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Research
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