瀏覽器上：

    window.WebViewJavascriptBridge.callHandler("startServiceCenter")

安卓上：

    window.connectWebViewJavascriptBridge((bridge) => {
        bridge.callHandler('startServiceCenter', {data: {}}, (response) => {})
    })

ios上：

    window.setupWebViewJavascriptBridge((bridge) => {
        bridge.callHandler('postDeviceInfo'
 
, {}, (responseData) => {
          requestBasic({
            method: 'post',
            url: '/log/ua',
            data: Object.assign(responseData, info)
          })
        })
      })

檢查裝置的：

export function checkIsAndroid () {
  const ua = navigator.userAgent.toLowerCase()
  return ua.indexOf('android'
 
) > -1
}
export function checkIsIos () {
  const ua = navigator.userAgent.toLowerCase()
  return ua.indexOf('iphone') > -1 || ua.indexOf('ipad') > -1
}
export function checkIsWechat () {
  const ua = navigator.userAgent.toLowerCase()
  return ua.match(/MicroMessenger/i) !== null
}
export function
 
 checkIsAppNameApp () {
  const ua = navigator.userAgent.toLowerCase()
  return (/appname/i).test(ua)
}

export function getOSType () {
  if (checkIsAppNameApp()) {
    return 'app'
  }
  if (checkIsWechat()) {
    return 'wechat'
  }
  if (checkIsAndroid()) {
    return 'android'
  }
  if (checkIsIos()) {
    return 'ios'
  }
  return 'web'
}

Navigator 物件包含有關瀏覽器的資訊
userAgent 返回由客戶機發送伺服器的 user-agent 頭部的值。