combination/miniprogram/packageComponent/pages/form/radio/radio.js

Page({
  onShareAppMessage() {
    return {
      title: 'radio',
      path: 'packageComponent/pages/form/radio/radio'
    }
  },

  data: {
    theme: 'light',
    items: [
      {value: 'USA', name: '美国'},
      {value: 'CHN', name: '中国', checked: 'true'},
      {value: 'BRA', name: '巴西'},
      {value: 'JPN', name: '日本'},
      {value: 'ENG', name: '英国'},
      {value: 'FRA', name: '法国'},
    ]
  },

  radioChange(e) {
    console.log('radio发生change事件，携带value值为：', e.detail.value)

    const items = this.data.items
    for (let i = 0, len = items.length; i < len; ++i) {
      items[i].checked = items[i].value === e.detail.value
    }

    this.setData({
      items
    })
  },
  onLoad() {
    this.setData({
      theme: wx.getSystemInfoSync().theme || 'light'
    })

    if (wx.onThemeChange) {
      wx.onThemeChange(({theme}) => {
        this.setData({theme})
      })
    }
  }
})