vue.js 回车生成label标签组件

效果图：

示例代码如下：

<template>
  <div>
    <!-- <label class="labelname">{{labelname}}</label> -->
    <div class="inputbox">
      <div class="arrbox">
        <div v-for="(item,index) in labelarr" :key="index" class="spanbox">
          <span>{{item}}</span>
          <i class="spanclose" @click="removeitem(index,item)"></i>
        </div>
        <input
          placeholder="输入后回车"
          size="5"
          v-model="currentval"
          @keyup.enter="addlabel"
          class="input"
          type="text"
        />
      </div>
    </div>

    <!-- 常用label展示 -->
    <div></div>
  </div>
</template>

<script>
export default {
  name: 'enterlabel',
  props: {
    parentarr: {
      type: Array,
      default () {
        return []
      }
    }
  },
  data () {
    return {
      currentval: '',
      labelarr: []
    }
  },
  watch: {
    labelarr (old, cur) {
      this.$emit('on-change', this.labelarr)
    },
    parentarr () {
      if (this.parentarr.length > 0) {
        this.labelarr = []
        for (let i = 0; i < this.parentarr.length; i++) {
          this.labelarr.push(this.parentarr[i])
        }
      } else {
        this.labelarr = []
      }
    }
  },
  methods: {
    // 移除标签
    removeitem (index, item) {
      this.labelarr.splice(index, 1)
    },
    // input回车加入labelarr中
    addlabel () {
      let count = this.labelarr.indexOf(this.currentval)
      if (count === -1) {
        this.labelarr.push(this.currentval)
      }
      this.currentval = ''
    }
  }
}
</script>

<style>
.inputbox {
  background-color: white;
  font-size: 12px;
  border: 1px solid #dcdee2;
  border-radius: 6px;
  margin-bottom: 18px;
  padding: 6px 1px 1px 6px;
  text-align: left;
  font-size: 0;
  margin-bottom: 0;
}
.input {
  font-size: 14px;
  border: none;
  box-shadow: none;
  outline: none;
  background-color: transparent;
  padding: 0;
  margin: 0;
  width: auto !important;
  max-width: inherit;
  min-width: 80px;
  vertical-align: top;
  height: 30px;
  color: #34495e;
  margin: 2px;
  line-height: 30px;
}
.arrbox {
  border-radius: 6px;
  margin-bottom: 10px;
  padding: 6px 1px 1px 6px;
  text-align: left;
  font-size: 0;
}
.spanbox {
  line-height: 30px;
  margin: 2px;
  padding: 0 10px;
  background-color: #1abc9c;
  color: white;
  border-radius: 4px;
  font-size: 13px;
  cursor: pointer;
  display: inline-block;
  position: relative;
  vertical-align: middle;
  overflow: hidden;
  transition: 0.25s linear;
}
.spanbox:hover {
  padding: 0px 17px 0 3px;
}
.spanclose {
  color: white;
  padding: 0 10px 0 0;
  cursor: pointer;
  font-size: 12px;
  position: absolute;
  right: -3px;
  text-align: right;
  text-decoration: none;
  top: 0;
  width: 100%;
  bottom: 0;
  z-index: 2;
  opacity: 0;
  filter: "alpha(opacity=0)";
  transition: opacity 0.25s linear;
  font-style: normal;
}
.spanbox:hover .spanclose {
  padding: 0 10px 5px 0;
  opacity: 1;
  -webkit-filter: none;
  filter: none;
}
.spanclose:after {
  content: "x";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 27px;
}
</style>

功能比较简单，需要的同学可以在这基础上再改改。
随便只记录自己平时遇到的一些需求的解决方法，下次遇到了可以直接用或者不断的改进。