vant/src/address-edit/Detail.js

import { createNamespace } from '../utils';
import { isAndroid } from '../utils/validate/system';
import Cell from '../cell';
import Field from '../field';

const [createComponent, bem, t] = createNamespace('address-edit-detail');
const android = isAndroid();

export default createComponent({
  props: {
    value: String,
    error: Boolean,
    focused: Boolean,
    detailRows: Number,
    searchResult: Array,
    detailMaxlength: Number,
    showSearchResult: Boolean
  },

  computed: {
    shouldShowSearchResult() {
      return this.focused && this.searchResult && this.showSearchResult;
    }
  },

  methods: {
    onSelect(express) {
      this.$emit('select-search', express);
      this.$emit(
        'input',
        `${express.address || ''} ${express.name || ''}`.trim()
      );
    },

    onFinish() {
      this.$refs.field.blur();
    },

    genFinish() {
      const show = this.value && this.focused && android;
      if (show) {
        return (
          <div class={bem('finish')} onClick={this.onFinish}>
            {t('complete')}
          </div>
        );
      }
    },

    genSearchResult() {
      const { value, shouldShowSearchResult, searchResult } = this;
      if (shouldShowSearchResult) {
        return searchResult.map(express => (
          <Cell
            key={express.name + express.address}
            class={bem('search-item')}
            label={express.address}
            border={false}
            icon="location-o"
            clickable
            onClick={() => {
              this.onSelect(express);
            }}
            scopedSlots={{
              title: () =>
                express.name && (
                  <div
                    domPropsInnerHTML={express.name.replace(
                      value,
                      `<span class=${bem('keyword')}>${value}</span>`
                    )}
                  />
                )
            }}
          />
        ));
      }
    }
  },

  render() {
    return (
      <Cell class={bem()}>
        <Field
          autosize
          ref="field"
          rows={this.detailRows}
          clearable={!android}
          type="textarea"
          value={this.value}
          error={this.error}
          border={!this.shouldShowSearchResult}
          label={t('label')}
          maxlength={this.detailMaxlength}
          placeholder={t('placeholder')}
          scopedSlots={{ icon: this.genFinish }}
          {...{ on: this.$listeners }}
        />
        {this.genSearchResult()}
      </Cell>
    );
  }
});