<span

        @click="openThirdPartySite('https://github.com/bingoogolapple/BGAIssueBlog')">BGAIssueBlog</span>

openThirdPartySite (url) {

        window.open(url)

      }

            visitRoute(r) {

                this.$router.push(r)

            }

<el-table-column prop="sex" label="性别" width="" :formatter="formatSex" sortable>

            </el-table-column>

//性别显示转换

            formatSex: function (row, column) {

                return row.sex ==  ? '男' : row.sex ==  ? '女' : '未知';

            },

return context == null || context == "" || context == "undefined" ? "" : context;

export function validUsername(str) {

  const valid_map = ['admin', 'editor']

  return valid_map.indexOf(str.trim()) >=

}

/**

 * @param {string} str

 * @returns {Boolean}

 */

export function isString(str) {

  if (typeof str === 'string' || str instanceof String) {

    return true

  }

  return false

}

/**

 * @param {Array} arg

 * @returns {Boolean}

 */

export function isArray(arg) {

  if (typeof Array.isArray === 'undefined') {

    return Object.prototype.toString.call(arg) === '[object Array]'

  }

  return Array.isArray(arg)

}

/**

 * Created by PanJiaChen on 16/11/18.

 */

/**

 * Parse the time to string

 * @param {(Object|string|number)} time

 * @param {string} cFormat

 * @returns {string}

 */

export function parseTime(time, cFormat) {

  if (arguments.length === ) {

    return null

  }

  const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'

  let date

  if (typeof time === 'object') {

    date = time

  } else {

    if ((typeof time === 'string') && (/^[-]+$/.test(time))) {

      time = parseInt(time)

    }

    if ((typeof time === 'number') && (time.toString().length === )) {

      time = time *

    }

    date = new Date(time)

  }

  const formatObj = {

    y: date.getFullYear(),

    m: date.getMonth() + ,

    d: date.getDate(),

    h: date.getHours(),

    i: date.getMinutes(),

    s: date.getSeconds(),

    a: date.getDay()

  }

  const time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {

    let value = formatObj[key]

    // Note: getDay() returns 0 on Sunday

    if (key === 'a') { return ['日', '一', '二', '三', '四', '五', '六'][value ] }

    if (result.length >  && value < ) {

      value = '' + value

    }

    return value ||

  })

  return time_str

}

/**

 * @param {number} time

 * @param {string} option

 * @returns {string}

 */

export function formatTime(time, option) {

  if (('' + time).length === ) {

    time = parseInt(time) *

  } else {

    time = +time

  }

  const d = new Date(time)

  const now = Date.now()

  const diff = (now - d) / 

  if (diff < ) {

    return '刚刚'

  } else if (diff < ) {

    // less 1 hour

    return Math.ceil(diff / ) + '分钟前'

  } else if (diff <  * ) {

    return Math.ceil(diff / ) + '小时前'

  } else if (diff <  *  * ) {

    return '1天前'

  }

  if (option) {

    return parseTime(time, option)

  } else {

    return (

      d.getMonth() +

       +

      '月' +

      d.getDate() +

      '日' +

      d.getHours() +

      '时' +

      d.getMinutes() +

      '分'

    )

  }

}

/**

 * @param {string} url

 * @returns {Object}

 */

export function getQueryObject(url) {

  url = url == null ? window.location.href : url

  const search = url.substring(url.lastIndexOf('?') + )

  const obj = {}

  const reg = /([^?&=]+)=([^?&=]*)/g

  search.replace(reg, (rs, $, $) => {

    const name = decodeURIComponent($)

    let val = decodeURIComponent($)

    val = String(val)

    obj[name] = val

    return rs

  })

  return obj

}

/**

 * @param {string} input value

 * @returns {number} output value

 */

export function byteLength(str) {

  // returns the byte length of an utf8 string

  let s = str.length

  for (var i = str.length - ; i >= ; i--) {

    const code = str.charCodeAt(i)

    if (code > 0x7f && code <= 0x7ff) s++

    else if (code > 0x7ff && code <= 0xffff) s +=

    if (code >= 0xDC00 && code <= 0xDFFF) i--

  }

  return s

}

/**

 * @param {Array} actual

 * @returns {Array}

 */

export function cleanArray(actual) {

  const newArray = []

  for (let i = ; i < actual.length; i++) {

    if (actual[i]) {

      newArray.push(actual[i])

    }

  }

  return newArray

}

/**

 * @param {Object} json

 * @returns {Array}

 */

export function param(json) {

  if (!json) return ''

  return cleanArray(

    Object.keys(json).map(key => {

      if (json[key] === undefined) return ''

      return encodeURIComponent(key) + '=' + encodeURIComponent(json[key])

    })

  ).join('&')

}

/**

 * @param {string} url

 * @returns {Object}

 */

export function param2Obj(url) {

  const search = url.split('?')[]

  if (!search) {

    return {}

  }

  return JSON.parse(

    '{"' +

      decodeURIComponent(search)

        .replace(/"/g, '\\"')

        .replace(/&/g, '","')

        .replace(/=/g, '":"')

        .replace(/\+/g, ' ') +

      '"}'

  )

}

/**

 * @param {string} val

 * @returns {string}

 */

export function html2Text(val) {

  const div = document.createElement('div')

  div.innerHTML = val

  return div.textContent || div.innerText

}

/**

 * Merges two objects, giving the last one precedence

 * @param {Object} target

 * @param {(Object|Array)} source

 * @returns {Object}

 */

export function objectMerge(target, source) {

  if (typeof target !== 'object') {

    target = {}

  }

  if (Array.isArray(source)) {

    return source.slice()

  }

  Object.keys(source).forEach(property => {

    const sourceProperty = source[property]

    if (typeof sourceProperty === 'object') {

      target[property] = objectMerge(target[property], sourceProperty)

    } else {

      target[property] = sourceProperty

    }

  })

  return target

}

/**

 * @param {HTMLElement} element

 * @param {string} className

 */

export function toggleClass(element, className) {

  if (!element || !className) {

    return

  }

  let classString = element.className

  const nameIndex = classString.indexOf(className)

  if (nameIndex === -) {

    classString += '' + className

  } else {

    classString =

      classString.substr(, nameIndex) +

      classString.substr(nameIndex + className.length)

  }

  element.className = classString

}

/**

 * @param {string} type

 * @returns {Date}

 */

export function getTime(type) {

  if (type === 'start') {

    return new Date().getTime() -  *  *  *

  } else {

    return new Date(new Date().toDateString())

  }

}

/**

 * @param {Function} func

 * @param {number} wait

 * @param {boolean} immediate

 * @return {*}

 */

export function debounce(func, wait, immediate) {

  let timeout, args, context, timestamp, result

  const later = function() {

    // 据上一次触发时间间隔

    const last = +new Date() - timestamp

    // 上次被包装函数被调用时间间隔 last 小于设定时间间隔 wait

    if (last < wait && last > ) {

      timeout = setTimeout(later, wait - last)

    } else {

      timeout = null

      // 如果设定为immediate===true，因为开始边界已经调用过了此处无需调用

      if (!immediate) {

        result = func.apply(context, args)

        if (!timeout) context = args = null

      }

    }

  }

  return function(...args) {

    context = this

    timestamp = +new Date()

    const callNow = immediate && !timeout

    // 如果延时不存在，重新设定延时

    if (!timeout) timeout = setTimeout(later, wait)

    if (callNow) {

      result = func.apply(context, args)

      context = args = null

    }

    return result

  }

}

/**

 * This is just a simple version of deep copy

 * Has a lot of edge cases bug

 * If you want to use a perfect deep copy, use lodash's _.cloneDeep

 * @param {Object} source

 * @returns {Object}

 */

export function deepClone(source) {

  if (!source && typeof source !== 'object') {

    throw new Error('error arguments', 'deepClone')

  }

  const targetObj = source.constructor === Array ? [] : {}

  Object.keys(source).forEach(keys => {

    if (source[keys] && typeof source[keys] === 'object') {

      targetObj[keys] = deepClone(source[keys])

    } else {

      targetObj[keys] = source[keys]

    }

  })

  return targetObj

}

/**

 * @param {Array} arr

 * @returns {Array}

 */

export function uniqueArr(arr) {

  return Array.from(new Set(arr))

}

/**

 * @returns {string}

 */

export function createUniqueString() {

  const timestamp = +new Date() + ''

  const randomNum = parseInt(( + Math.random()) * ) + ''

  return (+(randomNum + timestamp)).toString()

}

/**

 * Check if an element has a class

 * @param {HTMLElement} elm

 * @param {string} cls

 * @returns {boolean}

 */

export function hasClass(ele, cls) {

  return !!ele.className.match(new RegExp('(\\s|^)' + cls + '(\\s|$)'))

}

/**

 * Add class to element

 * @param {HTMLElement} elm

 * @param {string} cls

 */

export function addClass(ele, cls) {

  if (!hasClass(ele, cls)) ele.className += ' ' + cls

}

/**

 * Remove class from element

 * @param {HTMLElement} elm

 * @param {string} cls

 */

export function removeClass(ele, cls) {

  if (hasClass(ele, cls)) {

    const reg = new RegExp('(\\s|^)' + cls + '(\\s|$)')

    ele.className = ele.className.replace(reg, ' ')

  }

}