两个数组重复id过滤

    const arr = this.allChannels.filter(channel => {
        const idx = this.channels.findIndex(item => item.id === channel.id)
        if (idx === -1) {
          return true
        }
      })
      return arr

 或者

 this.allChannels.filter((item) => !this.channels.some(index => index.id === item.id))