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Assalamu alaykum ! Vue.js da
emithodisalari yordamida komponentlar o'rtasida ma'lumot almashish imkoniyati mavjud. Emit hodisalari yordamida bola komponent ota komponentga ma'lumot yuborishi mumkin. Quyidaemithodisalari haqida batafsil ko'rib chiqamiz.
emit Hodisalarini Aniqlash (event handler)
emit hodisalarini aniqlash va ishlatish uchun defineEmits funksiyasidan foydalaniladi.
Gooo:
*Eventlarni aniqlash (event handler) *:
defineEmitsfunksiyasidan foydalanib, komponentda chiqariladigan eventlarni ahndel qilsihimiz mumkin.Eventlarni chiqarish:
Eventlarni kerakli joydaemitfunksiyasi yordamida chiqarish mumkin.
Quyida batafsil msiloda ko'ramiz:
Misol 1: Oddiy Event
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Bola Komponent:
ChildComponent.vue
<template>
<button @click="notifyParent">Click me</button>
</template>
<script setup>
import { defineEmits } from 'vue'
// Eventlarni aniqlash
const emit = defineEmits(['myEvent'])
const notifyParent = () => {
emit('myEvent', 'Assalamu alaykuuuum bratanim')
}
</script>
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Ota Komponent:
ParentComponent.vue
<template>
<div>
<ChildComponent @myEvent="handleMyEvent" />
</div>
</template>
<script setup>
import ChildComponent from './ChildComponent.vue'
const handleMyEvent = (message) => {
console.log(message) // Output: Assalamu alaykuuuum bratanim
}
</script>
Misol 2: Argumentlar bilan Event
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Bola Komponent:
ChildComponent.vue
<template>
<button @click="sendData">Send Data</button>
</template>
<script setup>
const emit = defineEmits(['sendData'])
const sendData = () => {
emit('sendData', { id: 1, name: 'Jonibek Davronov' })
}
</script>
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Ota Komponent:
ParentComponent.vue
<template>
<div>
<ChildComponent @sendData="receiveData" />
</div>
</template>
<script setup>
import ChildComponent from './ChildComponent.vue'
const receiveData = (data) => {
console.log(data) // Output: { id: 1, name: 'Jonibek Davronov' }
}
</script>
Misol 3: Validatsiya bilan Event
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Bola Komponent:
ChildComponent.vue
<template>
<button @click="sendData">Send Validated Data</button>
</template>
<script setup>
const emit = defineEmits({
// Event nomi va uni qabul qiladigan argumentlar uchun validatsiya
sendData: (payload) => {
if (typeof payload.id === 'number' && typeof payload.name === 'string') {
return true
} else {
console.warn('Invalid payload')
return false
}
}
})
const sendData = () => {
emit('sendData', { { id: 1, name: 'Jonibek Davronov' })
}
</script>
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Ota Komponent:
ParentComponent.vue
<template>
<div>
<ChildComponent @sendData="handleValidatedData" />
</div>
</template>
<script setup>
import ChildComponent from './ChildComponent.vue'
const handleValidatedData = (data) => {
console.log(data) // Output: { id: 1, name: 'Jonibek Davronov' }
}
</script>
Xulosa o'laroq:
Vue.js da emit hodisalari yordamida komponentlar o'rtasida ma'lumot almashish mumkin ekan. defineEmits funksiyasidan foydalanib eventlarni aniqlash va emit funksiyasi yordamida eventlarni chiqarish mumkin (ota componentaga) . Bu hodisalar yordamida bola komponent ota komponentga ma'lumot yuborishi yoki xabar berishi mumkin. Eventlarni validatsiya qilish orqali, yuborilgan ma'lumotlarni to'g'ri ekanligiga ishonch hosil qilishimiz mumkin ekan.
Bizni tarmoqlarda kuzatishingiz mumkin va maqola foydali bo'lsa izoh va Vuechi do'stlaringizga ulashing. 🫡
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