vue2.0动态添加组件

Posted 2020-10-17 小小猫钓小小鱼

方法一、
<template>
    <input type="text" v-model=‘componentName‘>
    <button @click=‘add‘>click me to add a component</button>
</template>

<script>
    // 引入要添加的所有组件
    import component1 from ‘./components/component1.vue‘
    import component2 from ‘./components/component2.vue‘
    export default {
        data: function() {
            return {
                allComponents: [],
                componentName: ‘‘
            }
        },
        components: {
                // 注册所有组件
                component1,
                component2
        }
        methods: {
            add: function() {
                this.allComponents.push(this.componentName)
                // 重置输入框
                this.componentName = ‘‘
            },
            render: function(h) { // h 为 createElement 函数，接受三个参数
                // tag 
                // data
                // children 具体看文档吧
                return h(‘div‘,this.allComponents.map(function(componentName) {
                    return h(componentName)
                }))
            }
        }
    }
</script>

方法二、

html

  <div id="app">
    <button @click="add(‘a-component‘, ‘test‘)">Add A</button>
    <button @click="add(‘b-component‘, ‘test‘)">Add B</button>
    <ul>
      <li :is="item.component" :text="item.text" v-for="item in items"></li>
    </ul>
  </div>

javascript

var AComponent = Vue.extend({
  props: [‘text‘],
  template: ‘<li>A Component: {{ text }}</li>‘
})

var BComponent = Vue.extend({
  props: [‘text‘],
  template: ‘<li>B Component: {{ text }}</li>‘
})


new Vue({
  el: ‘#app‘,
  components: {
    ‘a-component‘: AComponent,
    ‘b-component‘: BComponent,
  },
  data: {
    items: []
  },
  methods: {
    add(component, text) {
      this.items.push({
        ‘component‘: component,
        ‘text‘: text,
      })
    }
  }
})

方法三、

我是写在父组件中的:

Vue.component(‘mycontent‘, {
        props: [‘content‘],
        data() {
            return {
                coms: [],
            }
        },
        render: function(h) {
            this.coms = [];
            for(var i = 0; i < this.content.length; i++) {
                this.coms.push(h(this.content[i], {}))
            }
            return h(‘div‘, {},
                this.coms)
        },
    });

调用的时候

    <mycontent v-bind:content="content"></mycontent>

那么父组件中的content变化时,就会动态加载组件了