vue中computed的作用以及用法
// 父组件
<template>
<div>
<navbar :ctype="ctype"></navbar>
</div>
</template>
<script>
import navbar from '@/components/navbar'
export default {
components: {navbar},
data () {
return{
ctype:1
}
}
}
</script>
// 子组件
<template>
<div>
<div>{{thistype}}</div>
</div>
</template>
<script>
export default {
props:['ctype'],
computed: {
normalizedSize: function () {
return this.().toLowerCase()
}
},
data(){
return{
thistype:this.ctype
}
}
}
</script>