index.js

import { getAllRect } from '../common/utils';
import { VantComponent } from '../common/component';
import { canIUseModel } from '../common/version';
VantComponent({
  field: true,
  classes: ['icon-class'],
  props: {
    value: {
      type: Number,
      observer(value) {
        if (value !== this.data.innerValue) {
          this.setData({ innerValue: value });
        }
      },
    },
    readonly: Boolean,
    disabled: Boolean,
    allowHalf: Boolean,
    size: null,
    icon: {
      type: String,
      value: 'star',
    },
    voidIcon: {
      type: String,
      value: 'star-o',
    },
    color: {
      type: String,
      value: '#ffd21e',
    },
    voidColor: {
      type: String,
      value: '#c7c7c7',
    },
    disabledColor: {
      type: String,
      value: '#bdbdbd',
    },
    count: {
      type: Number,
      value: 5,
      observer(value) {
        this.setData({ innerCountArray: Array.from({ length: value }) });
      },
    },
    gutter: null,
    touchable: {
      type: Boolean,
      value: true,
    },
  },
  data: {
    innerValue: 0,
    innerCountArray: Array.from({ length: 5 }),
  },
  methods: {
    onSelect(event) {
      const { data } = this;
      const { score } = event.currentTarget.dataset;
      if (!data.disabled && !data.readonly) {
        this.setData({ innerValue: score + 1 });
        if (canIUseModel()) {
          this.setData({ value: score + 1 });
        }
        wx.nextTick(() => {
          this.$emit('input', score + 1);
          this.$emit('change', score + 1);
        });
      }
    },
    onTouchMove(event) {
      const { touchable } = this.data;
      if (!touchable) return;
      const { clientX } = event.touches[0];
      getAllRect(this, '.van-rate__icon').then((list) => {
        const target = list
          .sort((item) => item.right - item.left)
          .find((item) => clientX >= item.left && clientX <= item.right);
        if (target != null) {
          this.onSelect(
            Object.assign(Object.assign({}, event), { currentTarget: target })
          );
        }
      });
    },
  },
});