自定义组件使用v-model

<template>
  <div class="custom-input">
    <span>我的输入框：</span>
    <input type="text" :value="value" @input="valueChanged">
  </div>
</template>

<script>
export default {
  props: {
    value: {
      type: String,
      default: ""
    }
  },
  created() {},
  methods: {
    valueChanged(e) {
      this.$emit("input", e.target.value);
    }
  }
};
</script>

<template>
  <div>
    <custom-input v-model="inputvalue"></custom-input>
    <span>{{inputvalue}}</span>
  </div>
</template>

<script>
import CustomInput from "./components/custom-input.vue";

export default {
  name: "App",
  components: {
    CustomInput
  },
  data: function() {
    return {
      inputvalue: "A"
    };
  }
};
</script>