Question

我有这个组件：InputField.vue

<template>
  <div class="w-full">
    <label class="sr-only" :for="name"></label>
    <input
      :placeholder="label"
      :name="name"
      class="border-b border-black w-full appearance-none w-full py-4 px-3 text-grey-darker leading-tight"
    />
  </div>
</template>
<script>
export default {
  props: {
    label: {
      type: String,
      required: true,
      default: 'label', /* <--------- Always prints default */
    },
    name: {
      type: String,
      required: true,
      default: 'name', /* <--------- Always prints default */
    },
  },
  data() {
    return {}
  },
}
</script>

这就是我从另一个组件中使用它的方式：

<inputField :label="Hola" :name="nombre" />

但是label和name始终是组件声明中定义的默认值，

知道我想念什么吗？

Answer 1

我将利用Utlime编写的代码段，但该答案中存在很多问题，实际上您不能删除“：”，因为它是将其绑定为道具的东西，实际上会让组件的多个实例具有其“自己的”道具状态，如果您使用的是硬编码值，则可以像:aProp="'something'"那样调用它，如果您要传递变量，则可以使用:aProp='variable' 正确的示例是：

Vue.component('InputField', {
  template: `
    <div class="w-full">
    <label class="sr-only" :for="name"></label>
    <input
      :placeholder="label"
      :name="name"
      class="border-b border-black w-full appearance-none w-full py-4 px-3 text-grey-darker leading-tight"
    />
  </div>
  `,

  props: {
    label: {
      type: String,
      required: true,
      default: 'label', /* <--------- No longer prints default if props are given */
    },
    name: {
      type: String,
      required: true,
      default: 'name',
    },
  },
});

new Vue({
  el: '#app',
})

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
  <input-field :label="'Hola'" :name="'nombre'"></input-field>
  <input-field :label="'Que tal Toni'" :name="'toni'"></input-field>
</div>

Answer 2

您需要删除:

<inputField label="Hola" name="nombre" />

Passing Static or Dynamic Props

Vue.component('InputField', {
  template: `
    <div class="w-full">
    <label class="sr-only" :for="name"></label>
    <input
      :placeholder="label"
      :name="name"
      class="border-b border-black w-full appearance-none w-full py-4 px-3 text-grey-darker leading-tight"
    />
  </div>
  `,

  props: {
    label: {
      type: String,
      required: true,
      default: 'label', /* <--------- Always prints default */
    },
    name: {
      type: String,
      required: true,
      default: 'name', /* <--------- Always prints default */
    },
  },
});

new Vue({
  el: '#app',
})

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
  <input-field label="Hola" name="nombre" /></input-field>
</div>

将prop值传递给组件

2 个答案: