Quasar q-checkbox get target value if checked - vue.js

Question

I'm using QUASAR and I want to get the state of my q-checkbox whether if it's checked or not. I've used event.target.checked and event.target.value but they are all undefined.
my checkbox:
<q-checkbox
v-on:click="addServices(full_service, $event)"
v-model="form.selected_full_services"
:val="full_service" />
my method:
addServices(full_service, event) {
console.log(event.target.checked)
console.log(event.target.value)
}
console:
output undefined

Answer 1

If I understood you correctly, maybe you don't need function at all :
const { ref } = Vue
const app = Vue.createApp({
setup () {
const full_services = ref( ['aaa', 'bbb', 'ccc'] )
const form = ref( { selected_full_services: [] } )
return { form, full_services }
}
})
app.use(Quasar)
app.mount('#q-app')
<link href="https://fonts.googleapis.com/css?family=Roboto:100,300,400,500,700,900|Material+Icons" rel="stylesheet" type="text/css">
<link href="https://cdn.jsdelivr.net/npm/quasar#2.10.1/dist/quasar.prod.css" rel="stylesheet" type="text/css">
<div id="q-app">
{{form}}
<div v-for="full_service in full_services">
<q-checkbox
:label="full_service"
v-model="form.selected_full_services"
:val="full_service" />
</div>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue#3/dist/vue.global.prod.js"></script>
<script src="https://cdn.jsdelivr.net/npm/quasar#2.10.1/dist/quasar.umd.prod.js"></script>