text: /**
   * Created by jiachenpan on 16/11/18.
   */
  
  export function isvalidUsername(str) {
    // const valid_map = ['admin', 'editor', 'test1']
    return true
  }
  
  /* 合法uri*/
  export function validateURL(textval) {
    const urlregex = /^(https?|ftp):\/\/([a-zA-Z0-9.-]+(:[a-zA-Z0-9.&%$-]+)*@)*((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])){3}|([a-zA-Z0-9-]+\.)*[a-zA-Z0-9-]+\.(com|edu|gov|int|mil|net|org|biz|arpa|info|name|pro|aero|coop|museum|[a-zA-Z]{2}))(:[0-9]+)*(\/($|[a-zA-Z0-9.,?'\\+&%$#=~_-]+))*$/
    return urlregex.test(textval)
  }
  
  /* 小写字母*/
  export function validateLowerCase(str) {
    const reg = /^[a-z]+$/
    return reg.test(str)
  }
  
  /* 大写字母*/
  export function validateUpperCase(str) {
    const reg = /^[A-Z]+$/
    return reg.test(str)
  }
  
  /* 大小写字母*/
  export function validatAlphabets(str) {
    const reg = /^[A-Za-z]+$/
    return reg.test(str)
  }
  
  /**
   * 判断是否为空
   */
  export function validatenull(val) {
    if (typeof val === 'boolean') {
      return false
    }
    if (val instanceof Array) {
      if (val.length === 0) return true
    } else if (val instanceof Object) {
      if (JSON.stringify(val) === '{}') return true
    } else {
      if (val === 'null' || val == null || val === 'undefined' || val === undefined || val === '') return true
      return false
    }
    return false
  }
  
  