answer-mini/wechat-app/static/vant/popup/index.js

import { VantComponent } from '../common/component';
import { transition } from '../mixins/transition';
VantComponent({
  classes: [
    'enter-class',
    'enter-active-class',
    'enter-to-class',
    'leave-class',
    'leave-active-class',
    'leave-to-class',
    'close-icon-class',
  ],
  mixins: [transition(false)],
  props: {
    round: Boolean,
    closeable: Boolean,
    customStyle: String,
    overlayStyle: String,
    transition: {
      type: String,
      observer: 'observeClass',
    },
    zIndex: {
      type: Number,
      value: 100,
    },
    overlay: {
      type: Boolean,
      value: true,
    },
    closeIcon: {
      type: String,
      value: 'cross',
    },
    closeIconPosition: {
      type: String,
      value: 'top-right',
    },
    closeOnClickOverlay: {
      type: Boolean,
      value: true,
    },
    position: {
      type: String,
      value: 'center',
      observer: 'observeClass',
    },
    safeAreaInsetBottom: {
      type: Boolean,
      value: true,
    },
    safeAreaInsetTop: {
      type: Boolean,
      value: false,
    },
  },
  created() {
    this.observeClass();
  },
  methods: {
    onClickCloseIcon() {
      this.$emit('close');
    },
    onClickOverlay() {
      this.$emit('click-overlay');
      if (this.data.closeOnClickOverlay) {
        this.$emit('close');
      }
    },
    observeClass() {
      const { transition, position, duration } = this.data;
      const updateData = {
        name: transition || position,
      };
      if (transition === 'none') {
        updateData.duration = 0;
        this.originDuration = duration;
      } else if (this.originDuration != null) {
        updateData.duration = this.originDuration;
      }
      this.setData(updateData);
    },
  },
});