JS重写Date函数以及兼容IOS系统

new Date("2020-09-21 11:11:00")

new Date("2020/09/21 11:11:00")

const OldDate = Date
// 修改第一个入参，横岗改斜杠
Date = function () {
  if (arguments.length > 0 && typeof (arguments[0]) === 'string' && arguments[0].includes('-')) {
    const p = arguments[0].replace(/-/g, '/')
    arguments[0] = p
  }
  return new OldDate(...arguments)
}

Date.prototype = OldDate.prototype

const oldDateStaticParam = Object.getOwnPropertyNames(OldDate)
const dateStaticParam = Object.getOwnPropertyNames(Date)
const diffParam = []
for (let i = 0; i < oldDateStaticParam.length; i++) {
  let find = false
  for (let j = 0; j < dateStaticParam.length; j++) {
    if (oldDateStaticParam[i] === dateStaticParam[j]) {
      find = true
      break
    }
  }
  if (!find) {
    diffParam.push(oldDateStaticParam[i])
  }
}
for (let i = 0; i < diffParam.length; i++) {
  Date[diffParam[i]] = OldDate[diffParam[i]]
}

function wrapDate () {
  const OldDate = Date
  // 重写arguments[0]
  Date = function () {
    if (arguments.length > 0 && typeof (arguments[0]) === 'string' && arguments[0].includes('-')) {
      const p = arguments[0].replace(/-/g, '/')
      arguments[0] = p
    }
    return new OldDate(...arguments)
  }
  // 继承原型函数
  Date.prototype = OldDate.prototype
  // 继承静态函数，过滤已有的静态函数和参数，取数组差集
  const oldDateStaticParam = Object.getOwnPropertyNames(OldDate)
  const dateStaticParam = Object.getOwnPropertyNames(Date)
  const diffParam = []
  for (let i = 0; i < oldDateStaticParam.length; i++) {
    let find = false
    for (let j = 0; j < dateStaticParam.length; j++) {
      if (oldDateStaticParam[i] === dateStaticParam[j]) {
        find = true
        break
      }
    }
    if (!find) {
      diffParam.push(oldDateStaticParam[i])
    }
  }
  for (let i = 0; i < diffParam.length; i++) {
    Date[diffParam[i]] = OldDate[diffParam[i]]
  }
}
// IOS环境
if (navigator.userAgent.includes('iPhone') || navigator.userAgent.includes('iPad')) {
  compatIos()
}
const date1 = new Date('1997-11-11 11:11:11')
console.log(date1)
const date2 = new Date('1997/11/11 11:11:11')
console.log(date2)