Micro-letter web silent authorize --- snsapi_base

In the micro-channel pages, you may just need to get openId, then we need to use the silent License.

1. initialization code interpretation whether or not there

async created () {
    let code = this.getQueryString('token')
    if (code) {
      await this.getUser(code)
    } else {
      this.getCode()
    }
  }

2. Get the code the way

getCode () { 
   the let urlNow = the encodeURIComponent (window.location.origin + window.location.pathname) 
    the let url = $ { `back-end domain name} / url? brand = $ {public No. brand name} & url = $ {urlNow} & scopes snsapi_base` = 
    window.location.replace (URL)         
}　

3. Intercept token [backend interface for requesting, obtaining openId]

 // 获取url参数
    getQueryString (name) {
      let reg = new RegExp('(^|&)' + name + '=([^&]*)(&|$)', 'i')
      let r = window.location.search.substr(1).match(reg)
      if (r != null) {
        return unescape(r[2])
      }
      return null
    }