Read
QrcodeStream Component
Learn how to read QRCodes live from a camera stream.
QrcodeStream
The QrcodeStream
component lets you read and decode QRCodes and various other barcodes from a live camera stream.
Scanned QRCodes:
<template>
<div>
<div v-if="!state.error">
<QrcodeStream
@error="onError"
@detect="onDetect"
/>
<div class="pt-4">
<h5>
Scanned QRCodes:
</h5>
<ul v-if="result" class="list-disc pl-4">
<li v-for="(r, i) in result" :key="i">
<span class="text-wrap wrap-anywhere">
{{ r }}
</span>
</li>
</ul>
</div>
</div>
<div v-else>
<h3>
{{ state.errorMsg }}
</h3>
<button @click="state.error = false">
reset
</button>
</div>
</div>
</template>
<script setup lang="ts">
import type { DetectedBarcode } from 'nuxt-qrcode'
const toast = useToast()
const result = ref<string[]>()
const state = reactive({
errorMsg: '',
error: false,
})
function onDetect(detectedCodes: DetectedBarcode[]) {
result.value = detectedCodes.map((code) => {
toast.add({
title: 'Detected',
description: `Value: ${code.rawValue}`,
actions: [
{
label: 'Copy',
onClick: () => {
navigator.clipboard.writeText(code.rawValue)
},
},
],
})
return code.rawValue
})
}
function onError(err: Error) {
state.error = true
state.errorMsg = `[${err.name}]: ${err.message}`
}
</script>