常用的小工具函数

常用的小工具函数

import _ from 'lodash'
export const isEmpty = params => {
  let result = false
  if (
    params === undefined ||
    params === null ||
    params === [] ||
    params === ''
  ) {
    result = true
  }
  if (typeof params === 'object') {
    result = _.isEmpty(params)
  }
  if (typeof params === 'string') {
    params = _.trim(params)
    result = params === ''
  }
  return result
}
export const hasStarSymbol = params => {
  return params.indexOf('****') === -1
}
export const isNotEmpty = params => {
  return !isEmpty(params)
}
export const isUrl = url => {
  return url && url.includes('http')
}
// 验证区号是否是三到四位数的合法区号
export const isValidAreacode = str => {
  let result = false
  if (!str || isEmpty(str)) {
    result = false
  }
  if (str && str.length > 0) {
    result = _.every(_.split(str, '-'), v => {
      return (v.length === 3 || v.length === 4) && v.charAt(0) === '0'
    })
  }
  return result
}
// 用于生成 key 防止组件缓存
export const getUUID = () => {
  let key = Math.random()
    .toString(36)
    .substring(3, 8)
  return `crm${key}`
}
// 过滤掉无用请求参数
export const filterQueryParams = (obj, ...args) => {
  const queryParams = JSON.parse(JSON.stringify(obj))
  args.forEach(x => {
    Reflect.deleteProperty(queryParams, x)
  })
  return queryParams
}
// 提取有用的请求参数
export const filterUseQueryParams = (obj, args = []) => {
  const queryParams = {}
  const objCopy = JSON.parse(JSON.stringify(obj))
  args.forEach(x => {
    queryParams[x] = objCopy[x]
    if (objCopy.hasOwnProperty(x + 'MaskSec')) {
      queryParams[x + 'MaskSec'] = objCopy[x + 'MaskSec']
    }
    if (objCopy[x + 'Mask']) {
      queryParams[x + 'Mask'] = objCopy[x + 'Mask']
    }
  })
  return queryParams
}
// 清空obj中对应的属性
export const clearObjValues = (obj, ...args) => {
  args &&
    args.forEach(x => {
      if (obj && x && obj[x]) {
        obj[x] = ''
      }
    })
  return obj
}
// 处理显示的串undefined null为空串
export const handlerDisplay = str => {
  if (str && typeof str === 'string') {
    str = str.replace(/(undefined)|(null)/gi, '').trim()
  }
  return str
}
// 处理 loading 的显示效果
let cacheEl = document.querySelector('.el-loading-mask.is-fullscreen')
export const loading = (flag = true) => {
  if (!cacheEl) {
    cacheEl = document.querySelector('.el-loading-mask.is-fullscreen')
  }
  if (flag) {
    // 修复loading 框偏移的问题
    // cacheEl.style.width = '1296px'
    cacheEl.style.display = 'block'
  } else {
    cacheEl.style.display = 'none'
  }
}
// 处理选项排到第一位
export const getFmsBalanceAccountModuleList = (arr, text = 'DefaultChooseLabel') => {
  let result = arr
  if (Array.isArray(arr) && arr.length > 0) {
    let index = arr.findIndex(x => x.area === text)
    if (index >= 0) {
      let matchOne = arr[index]
      arr.splice(index, 1)
      arr.unshift(matchOne)
    }
  }
  return result
}
// 全部为空
export const isAllEmpty = (obj, arr = []) => {
  let flag = true
  let values = arr.map(x => obj[x]) || []
  flag = values.every(x => isEmpty(x))
  return flag
}
// 全部必填
export const isAllFill = (obj, arr = []) => {
  let flag = true
  let values = arr.map(x => obj[x]) || []
  flag = values.every(x => !isEmpty(x))
  return flag
}
// 保留 2 位小数
// 计提保留2位小数 由后台数据库存储的时候处理好 3-> 3.00
export const twoDec = (val, precision = 2) => {
  let res = ''
  if (isEmpty(val)) {
    return res
  }
  if (val) {
    val = Number(val).toFixed(precision)
    res = `${val}`
  } else if (val === 0 || val === 0.0) {
    val = Number(val).toFixed(precision)
    res = `${val}`
  } else {
    res = ''
  }
  return res
}
// 根据组件名字查找子组件，深度优先遍历
// 向下找到最近的指定组件
export function findComponentDownward (context, componentName) {
  const childrens = context.$children
  let children = null
  if (childrens.length) {
    for (const child of childrens) {
      const name = child.$options.name
      if (name === componentName) {
        children = child
        break
      } else {
        children = findComponentDownward(child,
          componentName)
        if (children) break
      }
    }
  }
  return children
}
// 计算多个值的求和
export const calcTotal = (arr) => {
  let myarr = _.compact(arr).map(x => Number(x))
  let res = myarr.reduce((prev, curr, index, array) => {
    if (!_.isFinite(curr)) {
      curr = 0
    }
    return Number(curr) + Number(prev)
  }, 0)
  return res
}
// 用于判断区号重复
export const duplicates = (arr) => {
  var newArr = []
  for (var i = 0; i < arr.length; i++) {
    var count = 0
    for (var j = 0; j < arr.length; j++) {
      if (arr[i] === arr[j]) {
        count++
      }
    }
    if (count > 1 && newArr.indexOf(arr[i]) === -1) {
      newArr.push(arr[i])
    }
  }
  return newArr.join(',')
}
// 判断权限 在列表中就不去发请求
export const isIntoNOAuthSilentMethodList = (vm, currentMethod) => {
  let menus = vm.$store.getters.permission.menus
  let result = false
  result = (!menus.includes(currentMethod) && NO_AUTH_SILENT_METHOD_LIST.includes(currentMethod))
  console.log(`${currentMethod} is ${result}`)
  return result
}
function customFilter (x, key, currentOptions) {
  let result = false
  if (!currentOptions[key]) {
    result = true
  } else {
    result = x['extObj'][key] + '' === currentOptions[key]
  }
  return result
}
// 服务方式过滤
// 观察DOM
export const observeDom = (el, options, callback) => {
  var defaultOptions = {
    childList: true,
    subtree: true,
    attributes: true,
    attributeOldValue: true,
    characterData: true
  }
  var currentOptions = Object.assign(defaultOptions, options)
  var MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver
  var observer = new MutationObserver(callback)
  observer.observe(el, currentOptions)
}