I have a component in common between two other components A,B. This shared Comp has a button and its name changes depending on the component i use. How do I set the name dynamic?
I thought v-model solved the problem
What am I missing?
App.vue:
<test-a></test-a>
<test-b></test-b>
sharedComp.vue:
<template>
<div>
{{ btnValue }}
<input type="button" v-model="btnValue" />
</div>
</template>
<script>
export default {
data() {
return {
btnValue: "",
};
},
};
</script>
CompA.vue
<template>
<div>
<shared-comp
v-for="(item, index) in 3"
:key="index"
:value="'A'"
></shared-comp>
</div>
</template>
<script>
import SharedComp from "./SharedComp.vue";
export default {
components: { SharedComp },
};
</script>
CompB.vue
<template>
<div>
<shared-comp :value="'B'"></shared-comp>
</div>
</template>
<script>
import SharedComp from "./SharedComp.vue";
export default {
components: { SharedComp },
};
</script>
You have to define the properties you pass to your component inside of the 'sharedComp'.
Try something like:
<template>
<div>
{{ value }}
<input type="button" v-model="value" />
</div>
</template>
<script>
export default {
props: ['value'],
};
</script>
For further information on Props in Vue check the documentation page: https://v2.vuejs.org/v2/guide/components-props.html
Related
As a beginner in Vue.js,I am trying to create a Todo app, but problems seems to passing a variable to another component when looping.
i want to pass item to another embedded component.
Here what I have with all the components:
in main.js:
import Vue from "vue";
import App from "./App.vue";
import Todo from "./components/Todo";
import itemComponent from "./components/itemComponent";
Vue.config.productionTip = false;
Vue.component('todo', Todo);
Vue.component('itemcomponent', itemComponent);
new Vue({
render: h => h(App)
}).$mount("#app");
in App.vue:
<template>
<div id="app">
<todo></todo>
<img alt="Vue logo" src="./assets/logo.png" width="25%" />
<!-- <HelloWorld msg="Hello Vue in CodeSandbox!" /> -->
</div>
</template>
<script>
export default {
name: "App",
components: {
},
};
</script>
in Todo.vue:
<template>
<div>
<input type="text" v-model="nameme" />
<button type="click" #click="assignName">Submit</button>
<div v-for="(item, index) in result" :key="item.id">
<itemcomponent {{item}}></itemcomponent>
</div>
</div>
</template>
<script>
import { itemcomponent } from "./itemComponent";
export default {
props:['item'],
data() {
return {
nameme: "",
upernameme: "",
result: [],
components: {
itemcomponent,
},
};
},
methods: {
assignName: function () {
this.upernameme = this.nameme.toUpperCase();
this.result.push(this.nameme);
this.nameme = "";
},
},
};
</script>
in itemComponent.vue:
<template>
<div>
<input type="text" value={{item }}/>
</div>
</template>
<script>
export default {
props: {
item: String,
},
data() {
return {};
},
};
</script>
what is my mistake? thanks for help.
Quite a bunch of mistakes:
You should import single page components inside their parent components and register them there, not in main.js file. EDIT: Explaination to this is given in docs
Global registration often isn’t ideal. For example, if you’re using a build system like Webpack, globally registering all components means that even if you stop using a component, it could still be included in your final build. This unnecessarily increases the amount of JavaScript your users have to download.
You have a component registration in Todo.vue, but you have misplaced it inside data so its is just a data object that is not getting used, move into components.
In your loop you have item.id, but your item is just a plain string, it does not have an id property. Either change item to object with id property, or simply use the index provided in loop (not recommended).
Pass your item as a prop, not mustache template. So in Todo.vue replace {{ item }} with :item="item"
In your ItemComponent.vue you have mustache syntax once again in the attribute. Change value={{item }} to :value="item"
So here's the final code:
main.js
import Vue from "vue";
import App from "./App.vue";
Vue.config.productionTip = false;
new Vue({
render: h => h(App)
}).$mount("#app");
in App.vue:
<template>
<div id="app">
<todo></todo>
<img alt="Vue logo" src="./assets/logo.png" width="25%" />
<!-- <HelloWorld msg="Hello Vue in CodeSandbox!" /> -->
</div>
</template>
<script>
import Todo from './components/Todo.vue';
export default {
name: "App",
components: {
Todo,
},
};
</script>
in Todo.vue:
<template>
<div>
<input type="text" v-model="nameme" />
<button type="click" #click="assignName">Submit</button>
<div v-for="(item, index) in result" :key="index">
<itemcomponent :item="item"></itemcomponent>
</div>
</div>
</template>
<script>
import { itemcomponent } from "./itemComponent";
export default {
props:['item'],
data() {
return {
nameme: "",
upernameme: "",
result: [],
};
},
methods: {
assignName: function () {
this.upernameme = this.nameme.toUpperCase();
this.result.push(this.nameme);
this.nameme = "";
},
},
components: {
itemComponent,
}
};
</script>
itemComponent.vue:
<template>
<div>
<input type="text" :value="item"/>
</div>
</template>
<script>
export default {
props: {
item: String,
},
data() {
return {};
},
};
</script>
I'm using Vue 3. In the example below I have 3 simple components, Name Component, Phone Component and Submit Component. How do I get in the respective properties of the Submit Component, what was entered in the inputs?
Name Component:
<template>
<div>
<input type="text" v-bind="name">
</div>
</template>
Phone Component:
<template>
<div>
<input type="text" v-bind="phone">
</div>
</template>
Submit Component:
<template>
<name></name>
<phone></phone>
</template>
<script>
export default {
data() {
return {
name: '',
phone: '',
}
}
}
</script>
<template>
<section>
<childComponent ref="nameOfRef" />
</section>
</template>
methods: {
submit() {
let Data = this.$refs.nameOfRef.$data; // nameOfRef.data or nameOfRef.$data or nameOfRef.phone or nameOfRef.name
}
},
Check I think it will help to catch your parent component data.
After doing some digging, it seems that from child to parent you should update data by emitting events (not by v-model). This is my attempt of doing that (to no avail).
App.vue
<template>
<div>
<HelloWorld :count="count" #update:count="count= $event" />
</div>
</template>
<script>
import HelloWorld from "./components/HelloWorld.vue";
export default {
name: "App",
data() {
return {
count: 10
};
},
components: {
HelloWorld
}
};
</script>
HelloWorld.vue
<template>
<div class="hello">
<input
type="number"
min="0"
:value="count"
#input="$emit('input', $event.target.value)"
style="width:6em"
/>
</div>
</template>
<script>
export default {
name: "HelloWorld",
props: {
count: Number
}
};
</script>
Where am I going wrong? Ideally, I would like that changes in the input field of the child component would change the deposit field of the parent. Thanks!
I think that doesn't work because you're missing emits: ['update:count'] option in child component, But I recommend to name the prop as modelValue in child component and use v-model directive in parent instead of #update:count event :
<template>
<div>
<HelloWorld v-model="count" />
</div>
</template>
<script>
import HelloWorld from "./components/HelloWorld.vue";
export default {
name: "App",
data() {
return {
count: 10
};
},
components: {
HelloWorld
}
};
</script>
HelloWorld.vue :
<template>
<div class="hello">
<input
type="number"
min="0"
:value="count"
#input="$emit('update:modelValue', $event.target.value)"
style="width:6em"
/>
</div>
</template>
<script>
export default {
name: "HelloWorld",
props: {
modelValue: Number
},
emits: ['update:modelValue'],
};
</script>
This allows you to create a custom input
Good day,
I'm trying to pass a value from child to parent using the props but I'm having an error that says,
Avoid mutating a prop directly since the value will be overwritten whenever the parent component re-renders. Instead, use a data or computed property based on the prop's value. Prop being mutated: "search"
Here are my sample codes:
Parent component
<template>
<div>
<child :search="search" />
</div>
</template>
<script>
export default(){
data: ()=>({
search: ''
})
}
</script>
Child component
<template>
<div>
<input type="text" v-model="search" />
</div>
</template>
<script>
export default{
props: ['search']
watch:{
search(val){
this.$emit('search', val);
}
}
}
</script>
I hope somebody can help me.
You're binding v-model to search. So if you type into your input vue to mutates the property. And it's just a warning which says that the data will be lost on next update, because then the property will passed again and your last value will be overwritten.
You could do something like this:
Child:
<template>
<div>
<input type="text" v-model="search" />
</div>
</template>
<script>
export default{
mounted () {
this.searchForResult= this.search;
},
props: ['search'],
data() {
searchForResult: ''
},
watch:{
searchForResult(val){
this.$emit('search', val);
}
}
}
</script>
Parent:
<template>
<div>
<child :search="search" />
</div>
</template>
<script>
export default(){
data: ()=>({
search: ''
})
}
</script>
There is also the possibility to add a search method which you can call from parent.
Parent component
<template>
<div>
<div>received: {{childResult}}
<child :search="search" #change="change" />
</div>
</template>
<script>
export default(){
data(){
return {
search: 'some content',
childResult: ''
}
},
methods:{
change(data){
this.childResult = data;
}
}
}
</script>
Child component
<template>
<div>
<input type="text" v-model="result" />
</div>
</template>
<script>
export default{
props: {
search: String
},
data(){
return {
result: this.search
};
},
watch:{
result(val){
this.$emit('change', val);
}
}
}
</script>
I have a component with certain slots.
<v-split-container ref="splitContainer" class="panel-panel">
<template slot="left">
Test
</template>
<template slot="right">
<router-view></router-view> //Show Compontent A
</template>
<template slot="bottom"> //Slot B
Hello
</template>
</v-split-container>
Can I, from component A, change the contents of slot B by calling a function inside the component?
Hi you can do it with Scoped Slot. I have created an example for you how to do it. Please not that I am using v-slots(Some context here) only usable from vue v2.6.
Please take a look at the code example: https://codesandbox.io/s/2030jo20j0?fontsize=14
Child Component
<template>
<div>
<div>
<slot name="msgSlot">{{msg}}</slot>
</div>
<br>
<slot name="bottom" :updateMsg="updateMsg"></slot>
</div>
</template>
<script>
export default {
name: "HelloWorld",
data: () => ({
msg: "Default Message"
}),
methods: {
updateMsg(text) {
this.msg = text;
}
}
};
</script>
Parent Component
<template>
<div id="app">
<HelloWorld>
<template v-slot:msgSlot></template>
<template v-slot:bottom="{updateMsg}">
<input type="text" v-model="msg">
<button #click="updateMsg(msg)">Change Msg</button>
</template>
</HelloWorld>
</div>
</template>
<script>
import HelloWorld from "./components/HelloWorld";
export default {
name: "App",
data: () => ({
msg: ""
}),
components: {
HelloWorld
}
};
</script>