new Vue({//爷爷 el:"#example-2", components: { 'u-component': {//儿子 template: '<div><mini-child v-bind:display="display" v-bind:message="message"></mini-child>A custom component!</div>', data:{ display:true, message:"Message in parent" }, components:{ "mini-child": {//孙子 template:'<div>一个孙子<p v-if="display">!!!!</p>{{message}}</div>', props:["display","message"] } } } } })
vue.js:435 [Vue warn]: The "data" option should be a function that returns a per-instance value in component definitions.warn @ vue.js:435 vue.js:435 [Vue warn]: Property or method "display" is not defined on the instance but referenced during render. Make sure to declare reactive data properties in the data option. found in ---> <UComponent> <Root>warn @ vue.js:435 vue.js:435 [Vue warn]: Property or method "message" is not defined on the instance but referenced during render. Make sure to declare reactive data properties in the data option. found in ---> <UComponent> <Root>
求帮帮,这个是什么问题呢?
暴躁的代码
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