如何在Vue.js中将子组件的输入数据传递给父组件并存储到数组中？

Question

** 例如，在这里，当我单击按钮时，我将多一个组件，这意味着它将有新数据，所以我想在按下“保存数据”按钮时将所有信息收集到一个数组中，我希望，很容易理解

<Child v-for="count in btnNumber" :key="count" @showData="getElements" />

<v-btn
  color="primary"
  elevation="10"
  class="space"
  large
  @click="duplicateEl"
  >Add Categ & Key</v-btn
>
v-btn
      color="secondary"
      elevation="13"
      class="btnEl"
      dark
      large
      @click="getResult"
      >Save Data</v-btn

** 它使用 Emit 从我的子组件获取数据

methods:{
               getElements(emitPayload) {
              this.selectedChildCategory = emitPayload.selectedCateg;
              this.selectedChildKey = emitPayload.selectedKey;
              this.selectedChildLanguage = emitPayload.selectedLang;
              this.selectedChildContent = emitPayload.selectedCon;
        }
    }
 duplicateEl() {
  this.btnNumber++;
}

Answer 1

尝试将发出事件的数据（从获取元素）保存到新的数据变量数组，并使用该数组

Answer 2

您可以在父组件上保存数据，请查看以下代码片段：

Vue.component('Child', {
  template: `
  
  `,
  props: ['conte'],
  data() {
    return {
      content: this.conte,
      categories: ['first', 'second', 'third'],
      keys: [1,2,3],
      langs: ['g', 'h', 'j'],
      contents: ['aaa', 'bbb', 'ccc']
    }
  },
  methods: {
   setD() {
      this.$emit('show', this.content);
    },
  },
})

new Vue({
  vuetify: new Vuetify(),
  el: "#app",
  data() {
    return {
      contentFields: [{id: 0, cat: '', key: '', lang: '', cont: ''}],
      showData: false
    }
  },
  methods: {
    addInput() {
      let newI = this.contentFields.length 
      this.contentFields.push({id: newI, cat: '', key: '', lang: '', cont: ''})
    },
    getElements(e){
      const newData = this.contentFields.map(obj => {
        if(obj.id === e.id) 
           return { ...obj }
        return obj
      });
    },
    getResult() {
      this.showData = !this.showData
    }
  }
})

  [email protected]/css/materialdesignicons.min.css" rel="stylesheet">
  [email protected]/dist/vuetify.min.css" rel="stylesheet">
  

    Add Categ & KeySave Data
{{ contentFields }}