<script>
? ....
? import CustomerModal from './modules/CustomerModal'
? export default {
? ? name: "CustomerList",
? ? mixins:[JeecgListMixin],
? ? components: {
? ? ? JDate,
? ? ? CustomerModal,
? ? ? JDictSelectTag
? ? },
? ? ...
? }
</script>

<customer-modal ref="modalForm" @ok="modalFormOk"></customer-modal>
// ref屬性值指定了從$refs中獲取組件的名稱

this.$refs.modalForm.add();

this.$refs.modalForm.title = "新增";

<component-a :num.sync="number">這是子組件</component-a>

<template>
  <div>
    <p @click="change">子屬性{{num}}</p>
  </div>
</template>
<script>
    export default {
        name: "ComponentA",
        props: {
          num: Number
        },
        methods: {
          change(){
            this.$emit('update:num', 10)
          }
        }
    }
</script>