Vue开发组件如何将数据和视图分离_vue死数据分离处理

一、函数组建

<script>
export default {
	props: {
		value: {
			type: Array,
		},
	},
 
	data() {
		return {
			newTag: '',
		}
	},
 
	methods: {
		addTag() {
			if (this.newTag.trim().length === 0 || this.value.includes(this.newTag.trim())) {
				return
			}
			this.$emit('input', [...this.value, this.newTag.trim()])
			this.newTag = ''
		},
		removeTag(tag) {
			this.$emit('input', this.value.filter(t => t !== tag))
		},
	},
 
	render() {
		return this.$scopedSlots.default({
			tags: this.value,
			addTag: this.addTag,
			removeTag: this.removeTag,
			inputEvents: {
				input: e => {
					this.newTag = e.target.value
				},
				keydown: e => {
					if (e.keyCode === 13) {
						e.preventDefault()
						this.addTag()
					}
				},
			},
			inputAttrs: {
				value: this.newTag,
			},
		})
	},
}
</script>
 

二、消费组建

<template>
  <div id="app layout">
    <tagsInput v-model="tags">
      <div class="input-tags-wrap" slot-scope="{inputAttrs,inputEvents,tags,removeTag}">
          <span class="tag" v-for="tag in tags" :key="tag">
            <span>{{tag}}</span>
            <button class="tag-input-remove" @click="removeTag(tag)">x</button>
          </span>
          <input type="text" class="tag-input" v-bind="inputAttrs" v-on="inputEvents" placeholder="Add tag..." >
      </div>
    </tagsInput>
 
     <tags-input v-model="tags" style="margin-top:50px;margin-bottom:50px;">
          <div class="input-tags-wrap" slot-scope="{inputAttrs,inputEvents,tags,removeTag,addTag}">
              <div class="tags-wrap-header">
                <input type="text"  v-bind="inputAttrs" v-on="inputEvents" placeholder="Add tag..." ><button class="tag-input-add" @click="addTag">添加</button>
              </div>
               <div>
                <dl>
                  <dd v-for="tag in tags " :key="tag">{{tag}}
                    <button class="tag-input-remove" @click="removeTag(tag)">x</button>
                  </dd>
                </dl>
               </div>
          </div> 
     </tags-input>
     
    <button @click="submit">提交</button>
  </div>
</template>
 
<script>
import tagsInput from './components/tagsInput.vue'
 
export default {
  name: 'app',
  data(){
    return {
      tags:['Helllo World','Lange']
    }
  },
  components: {
    tagsInput
  },
  methods:{
    submit(){
      console.log(this.tags)
    }
  }
 
}
</script>
 
<style>
  .layout{
    width: 100%;
    display: flex;
    justify-content: center;
    height: 100vh;
  }
  .input-tags-wrap{
    width: 400px;
    display: flex;
    flex-wrap: wrap;
    border:1px solid #eee;
    background-color: #fff;
    padding: 5px;
  }
  .input-tags-wrap .tag-input{
    border:none;
    outline: transparent;
    margin-left: 5px;
  }
  .input-tags-wrap  .tag{
    background: rgb(219, 148, 15);
    color: #fff;
    padding: 5px;
    border-radius: 5px;
    margin: 5px;
  }
   .tag-input-remove{
    outline: transparent;
    font-size: 16px;
    color: #fff;
    border: none;
    border-radius: 50%;
    margin-left: 5px;
    cursor:pointer;
    background-color: rgb(7, 230, 118);
  }
  .tags-wrap-header{
    display: flex;
    height: 40px;
    line-height: 40px;
  }
  .tags-wrap-header input{
    width: 200px;
    display: inline-flex;
    height: 32px;
    line-height: 32px;
    box-sizing: border-box;
  }
  .tags-wrap-header button{
    display: inline-flex;
    height: 32px;
    outline: none;
    padding: 0 12px;
    background: green;
    color: #fff;
    border-color: transparent;
    line-height: 32px;
    cursor: pointer;
 
  }
</style>

三、实现的效果

 同一套逻辑，不同的展示方式。高效的复用组件