<component>
Misol
Dinamik komponent yaratish uchun is atributiga ega o‘rnatilgan <component> elementidan foydalanish.
<template>
<h1>Dynamic Components</h1>
<p>App.vue switches between which component to show.</p>
<button @click="toggleValue = !toggleValue">Switch component</button>
<component :is="activeComp"></component>
</template>
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Quyida ko‘proq misollarni ko‘ring.
Ta’rif va qo‘llanilishi
O‘rnatilgan <component> elementi o‘rnatilgan is atributi bilan birgalikda HTML elementi yoki Vue komponentini yaratish uchun ishlatiladi.
HTML elementi: <component> elementi yordamida HTML elementi yaratish uchun is atributiga biz yaratmoqchi bo‘lgan HTML elementining nomi beriladi: yoki to‘g‘ridan-to‘g‘ri (1-misol), yoki v-bind yordamida dinamik tarzda (2-misol).
Vue komponenti: <component> elementi yordamida Vue komponentini render qilish uchun is atributiga biz yaratmoqchi bo‘lgan Vue komponentining nomi beriladi: yoki to‘g‘ridan-to‘g‘ri (3-misol), yoki dinamik komponent yaratish uchun v-bind yordamida dinamik tarzda (4-misol).
Dinamik komponent yaratishda faol bo‘lmagan komponentlarning state’ini eslab qolish uchun <component> elementini o‘rnatilgan <KeepAlive> komponenti bilan o‘rab olish mumkin. (5-misol)
Dinamik komponentdagi faol komponentni is atributida ternar ifoda ishlatib ham almashtirish mumkin. (6-misol)
Eslatma: v-model direktivasi <component> elementi yordamida yaratilgan oddiy (native) HTML forma kiritish teglari (masalan, <input> yoki <option>) bilan ishlamaydi. (7-misol)
Props
| Prop | Tavsif |
|---|---|
| is | Majburiy. Faol bo‘lishi kerak bo‘lgan komponentga yoki yaratiladigan HTML elementiga teng qilib o‘rnatiladi. |
Ko‘proq misollar
1-misol
<div> elementini yaratish uchun o‘rnatilgan <component> elementidan foydalanish.
<template>
<h2>Example Built-in 'component' Element</h2>
<p>The component element is rendered as a div element with is="div":</p>
<component is="div">This is a DIV element</component>
</template>
<style scoped>
div {
border: solid black 1px;
background-color: lightgreen;
}
</style>
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2-misol
Tartiblangan ro‘yxat va tartiblanmagan ro‘yxat o‘rtasida almashish uchun o‘rnatilgan <component> elementidan foydalanish.
<template>
<h2>Example Built-in 'component' Element</h2>
<p>Using the component element to toggle between an ordered list (ol), and an unordered list (ul):</p>
<button v-on:click="toggleValue = !toggleValue">Toggle</button>
<p>Animals from around the world</p>
<component :is="tagType">
<li>Kiwi</li>
<li>Jaguar</li>
<li>Bison</li>
<li>Snow Leopard</li>
</component>
</template>
<script>
export default {
data() {
return {
toggleValue: true
}
},
computed: {
tagType() {
if (this.toggleValue) {
return 'ol'
}
else {
return 'ul'
}
}
}
}
</script>
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3-misol
is atributiga komponent nomini berish orqali komponentni render qilish uchun o‘rnatilgan <component> elementidan foydalanish.
App.vue:
<template>
<h2>Example Built-in 'is' Attribute</h2>
<p>The component element below is set to be a component by the use of 'is="child-comp"'.</p>
<component is="child-comp"></component>
</template>
ChildComp.vue:
<template>
<div>
<h3>ChildComp.vue</h3>
<p>This is the child component</p>
</div>
</template>
<style scoped>
div {
border: solid black 1px;
background-color: lightgreen;
padding: 10px;
max-width: 250px;
margin-top: 20px;
}
</style>
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4-misol
Ikki komponent o‘rtasida almashinishimiz mumkin bo‘lgan dinamik komponentni yaratish uchun o‘rnatilgan <component> elementidan foydalanish.
<template>
<h1>Dynamic Components</h1>
<p>App.vue switches between which component to show.</p>
<button @click="toggleValue = !toggleValue">Switch component</button>
<component :is="activeComp"></component>
</template>
<script>
export default {
data () {
return {
toggleValue: true
}
},
computed: {
activeComp() {
if(this.toggleValue) {
return 'comp-one'
}
else {
return 'comp-two'
}
}
}
}
</script>
<style>
#app {
width: 350px;
margin: 10px;
}
#app > div {
border: solid black 2px;
padding: 10px;
margin-top: 10px;
}
</style>
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5-misol
Komponentlar almashtirilganda kiritilgan qiymatlarni eslab qolish uchun <component> elementi o‘rnatilgan <KeepAlive> komponenti bilan o‘rab olinadi.
<template>
<h1>Dynamic Components</h1>
<p>App.vue switches between which component to show.</p>
<p>With the <KeepAlive> tag the components now remember the user inputs.</p>
<button @click="toggleValue = !toggleValue">Switch component</button>
<KeepAlive>
<component :is="activeComp"></component>
</KeepAlive>
</template>
<script>
export default {
data () {
return {
toggleValue: true
}
},
computed: {
activeComp() {
if(this.toggleValue) {
return 'comp-one'
}
else {
return 'comp-two'
}
}
}
}
</script>
<style>
#app {
width: 350px;
margin: 10px;
}
#app > div {
border: solid black 2px;
padding: 10px;
margin-top: 10px;
}
h2 {
text-decoration: underline;
}
</style>
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6-misol
Qaysi komponent faol bo‘lishini almashtirish uchun is atributli <component> elementi va ternar ifodadan foydalanish.
<template>
<h1>Dynamic Components</h1>
<p>Refresh the page and there is a chance the dynamic component will toggle.</p>
<component :is="Math.random() > 0.5 ? 'comp-one' : 'comp-two'"></component>
</template>
<style>
#app {
width: 350px;
margin: 10px;
}
#app > div {
border: solid black 2px;
padding: 10px;
margin-top: 10px;
}
</style>
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7-misol
v-model direktivasi <component> elementi yordamida yaratilgan <input> elementlari bilan ishlamasligini namoyish qilish.
<template>
<h1>Dynamic Components</h1>
<p><mark>The v-model directive does not work with input element created with the component element.</mark></p>
<hr>
<p>Does not work, not updating:</p>
<component is="input" type="number" v-model="inpVal1"></component> (try to change value)
<p class="pResult1">inpVal1: {{ inpVal1 }}</p>
<hr>
<p>How it should work, updates:</p>
<input type="number" v-model="inpVal2"> (try to change value)
<p class="pResult2">inpVal2: {{ inpVal2 }}</p>
</template>
<script>
export default {
data() {
return {
inpVal1: 4,
inpVal2: 7,
}
}
}
</script>
<style>
#app {
width: 350px;
margin: 10px;
}
.pResult1 {
background-color: lightpink;
font-family: 'Courier New', Courier, monospace;
font-weight: bold;
padding: 5px;
}
.pResult2 {
background-color: lightgreen;
font-family: 'Courier New', Courier, monospace;
font-weight: bold;
padding: 5px;
}
</style>
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Tegishli sahifalar
Vue darsligi: Vue komponentlari
Vue darsligi: Dinamik komponentlar
Vue darsligi: Vue forma kiritish maydonlari
Vue darsligi: Vue v-model direktivasi
Vue ma’lumotnomasi: Vue is atributi
Vue ma’lumotnomasi: Vue v-bind direktivasi
Vue ma’lumotnomasi: Vue v-model direktivasi
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