In my project, I am working with 2 components that have a shared parent. My goal is to pass data from one child component to the other effectively. (I am specifically using vueJS 2 for this task)
In my project, I am working with 2 components that have a shared parent. My goal is to pass data from one child component to the other effectively. (I am specifically using vueJS 2 for this task)
For effective communication, the parent component should manage it in the following manner:
this.$emit('myVarChanged', this.myVar);
<ChildOneComponent @myVarChanged="updateMyVar" />
data() { return { myVar:null } }
methods: {
updateMyVar(val){
this.myVar = val;
}
}
<ChildTwoComponent :myVar="myVar" />
prop:props: ['myVar']
Demonstration:
const child1 = Vue.component('child1', {
template: '#child1',
data() { return { count:0 } },
methods: {
updateParent() { this.$emit('myvarchanged', this.count++); }
}
});
const child2 = Vue.component('child2', {
template: '#child2',
props: ['myvar']
});
new Vue({
el:"#app",
components: { child1, child2 },
data() { return { myvar:null } },
methods: {
updateMyVar(val) { this.myvar = val; }
}
});<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<template id="child1">
<div>
<h1>Child 1</h1>
<button @click="updateParent">Click to send to child 2</button>
</div>
</template>
<template id="child2">
<div>
<h1>Child 2</h1>
<p>Prop from child 1: {{myvar}}</p>
</div>
</template>
<div id="app">
<div><child1 @myvarchanged="updateMyVar" /></div>
<div><child2 :myvar="myvar" /></div>
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