将手机号格式化为以横杠分隔字符串

phone-split.js

let phoneReg = /^134[0-8]\d{7}$|^13[^4]\d{8}$|^14[5-9]\d{8}$|^15[^4]\d{8}$|^16[6]\d{8}$|^17[0-8]\d{8}$|^18[\d]{9}$|^19[8,9]\d{8}$/
/**
 * 格式化手机号码
 * @param {*} mobileNum 手机号码
 */
function split(mobileNum) {
  let value = mobileNum.replace(/\D/g, '').substring(0, 11)
  if (value.length === 11 && phoneReg.test(value)) {
    value = value.replace(/^(...)(....)/g, '$1-$2-')
  }
  return value
}
console.log(split('18666343371')) // return --> 186-6634-3371