js 获取本地ip

const getIp = () => {
  let os = require(‘os‘),
    iptable = {},
    ifaces = os.networkInterfaces()
  for (let dev in ifaces) {
    ifaces[dev].forEach(function (details, alias) {
      if (details.family == ‘IPv4‘) {
        iptable[dev + (alias ? ‘:‘ + alias : ‘‘)] = details.address
      }
    })
  }

  for (let key in iptable) {
    return iptable[key]
  }
}