web-utils-super/deepClone.js

前端函数库

/**
 * @desc 深拷贝，支持常见类型
 * @param {Any} values
 * @return {Any}
 */
function deepClone(values) {
  let copy

  // Handle the 3 simple types, and null or undefined
  if (null == values || 'object' != typeof values) return values

  // Handle Date
  if (values instanceof Date) {
    copy = new Date()
    copy.setTime(values.getTime())
    return copy
  }

  // Handle Array
  if (values instanceof Array) {
    copy = []
    for (let i = 0, len = values.length; i < len; i++) {
      copy[i] = deepClone(values[i])
    }
    return copy
  }

  // Handle Object
  if (values instanceof Object) {
    copy = {}
    for (let attr in values) {
      if (values.hasOwnProperty(attr)) copy[attr] = deepClone(values[attr])
    }
    return copy
  }

  throw new Error("Unable to copy values! Its type isn't supported.")
}

module.exports = deepClone