Implement WeChat payment through vue.js

onBridgeReady: function () {
  const openId = localStorage.getItem('openId')
  payService.payment(this.$route.params.orderId, 1, openId).then(rt => { //1:支付类型，可不填
  this.message = rt.t
  WeixinJSBridge.invoke(
    'getBrandWCPayRequest', {
    'appId': this.message.appId,
    'timeStamp': this.message.timeStamp,
    'nonceStr': this.message.nonceStr,
    'package': this.message.package,
    'signType': this.message.signType,
    'paySign': this.message.paySign
    },
   function (res) {
   console.log(res)
   if (res.err_msg === 'get_brand_wcpay_request:ok') {
    Toast('微信支付成功')
    this.$router.push('/MineOrder')
   } else if (res.err_msg === 'get_brand_wcpay_request:cancel') {
    Toast('用户取消支付')
    // window.location.href = 'gift_failview.do?out_trade_no=' + this.orderId
   } else if (res.err_msg === 'get_brand_wcpay_request:fail') {
    Toast('网络异常，请重试')
   }
   }
  )
  })
 },
 callpay: function () {
  if (typeof WeixinJSBridge === 'undefined') {
  if (document.addEventListener) {
   document.addEventListener('WeixinJSBridgeReady', this.onBridgeReady(), false)
  } else if (document.attachEvent) {
   document.attachEvent('WeixinJSBridgeReady', this.onBridgeReady())
   document.attachEvent('onWeixinJSBridgeReady', this.onBridgeReady())
  }
  } else {
  this.onBridgeReady()
  }
 }