小程序函数全集封装

/**
 * Created by wangxin on 2018/6/12.
 */
import Vue from 'vue'
/**
 * json拼接为字符串
 * @param json
 * @returns {string}
 */
export function qs (json) {
  let str = ''
  for (let key in json) {
    if (json.hasOwnProperty(key)) {
      str += key + '=' + json[key] + '&'
    }
  }
  str = str.substr(0, str.lastIndexOf('&'))
  return str
}

/**
 * 生成指定长度的随机字符
 * @param length
 * @returns {string}
 */
export function genRandomStr (length) {
  let arr = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z']
  let str = ''
  for (let i = 0; i < length; i++) {
    str += arr[parseInt(Math.random() * 36)]
  }
  return str
}

/**
 * 判断字符串是否为手机号
 * @param phone
 * @return {bool}
 */
export function isPhoneNo (phone) {
  var reg = /^1\d{10}$/
  var flag = reg.test(phone)
  return flag
}

/**
 * 计算日期差
 * @param start
 * @param end
 * @returns {*}
 */
export function getDateDiff (start, end) {
  if (!end) {
    return '借阅中'
  }
  let startTime = new Date(start)
  let endTime = new Date(end)
  let time = endTime - startTime
  let seconds = time / (1000 * 60)
  let minutes
  let hours
  let resultDate = `${seconds}分钟`
  if (seconds >= 60) {
    minutes = parseInt(seconds / 60)
    seconds = seconds % 60
    resultDate = `${minutes}小时${seconds}分钟`
  }
  if (minutes >= 60) {
    hours = parseInt(minutes / 60)
    minutes = minutes % 60
    resultDate = `${hours}天${minutes}小时`
  }
  return resultDate
}

/**
 * 格式化数值为","形式
 * @param number
 * @returns {string}
 */
export function formatNumber (number) {
  return String(number).replace(/(\d)(?=(\d{3})+$)/g, '$1,')
}

/**
 * 在指定闭区间生成一个随机数
 * @param rangeL
 * @param rangeR
 */
export function genRandom (rangeL, rangeR) {
  return parseInt(Math.random() * (rangeR - rangeL + 1) + rangeL)
}

/**
 * 将对象转换成数组(类似于map结构)
 * @param obj
 * @returns {Array}
 * @constructor
 */
export function obj2Array (obj) {
  let arr = []
  for (let key in obj) {
    if (obj.hasOwnProperty(key)) {
      let newObj = {}
      newObj.key = key
      newObj.value = obj[key]
      arr.push(newObj)
    }
  }
  return arr
}

/**
 * 时间格式化
 * @param date 时间对象
 * @param fmt 格式：'yyyy-MM-dd hh:mm:ss'
 * @returns {*} 格式化后的时间
 */
export function formatDate (date, fmt) {
  var o = {
    'M+': date.getMonth() + 1, // 月份
    'd+': date.getDate(), // 日
    'h+': date.getHours(), // 小时
    'm+': date.getMinutes(), // 分
    's+': date.getSeconds(), // 秒
    'q+': Math.floor((date.getMonth() + 3) / 3), // 季度
    'S': date.getMilliseconds() // 毫秒
  }
  if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (date.getFullYear() + '').substr(4 - RegExp.$1.length))
  for (var k in o) {
    if (new RegExp('(' + k + ')').test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length === 1) ? (o[k]) : (('00' + o[k]).substr(('' + o[k]).length)))
  }
  return fmt
}

/**
 * 去掉字符串首尾的空格
 * @param str
 */
export function trim (str) {
  return str.replace(/(^\s*)|(\s*$)/g, '')
}

/**
 * 获取字符串的长度
 * @param str
 * @returns {number}
 */
export function getLength (str) {
  let len = 0
  for (let i = 0; i < str.length; i++) {
    if (str.charCodeAt(i) > 127 || str.charCodeAt(i) === 94) {
      len += 2
    } else {
      len += 1
    }
  }
  return len
}

/**
 * 价格校验
 * @param price
 * @returns {Number}  如果是小数，只保留两位小数
 */
export function getPrice (price) {
  if (typeof price !== 'number') {
    return
  }
  if (price <= 0) {
    return
  }
  price += ''
  let intPart = ''
  let decPart = ''
  if (price.indexOf('.') !== -1) {
    intPart = price.substr(0, price.indexOf('.'))
    decPart = price.substr(price.indexOf('.') + 1, 2)
    return parseFloat(intPart + '.' + decPart)
  } else {
    return parseFloat(price)
  }
}

/**
 *  正则判断是字符串是否位数字
 *  @param string
 *  @returns {bool}
 */
export function isNumber (value) {
  var patrn = /^(-)?\d+(\.\d+)?$/
  if (patrn.exec(value) == null || value === '') {
    return false
  } else {
    return true
  }
}

/**
 * 个性化自定义打印
 */
export function customPrint (value) {
  if (Vue.prototype.$printEnable) {
    console.log(value);
  } 
}

/**
 * 格式化请求url
 * 将其转换为对象
 * 从而直接取各个参数的值
 */
export function confirmUrl (url) {
    var theRequest = {};
    if (url.indexOf("?") != -1) {
      var str = url.substring(url.indexOf("?") + 1);
      // var str = str.substr(1); 
      var strs = str.split("&");
      for (var i = 0; i < strs.length; i++) {
        theRequest[strs[i].split("=")[0]] = unescape(strs[i].split("=")[1]);
      }
    }
    return theRequest;
}

import http from "./http.js"
// 判断数据是否为空
const isEmpty = (obj, desc) => {
    if (typeof obj == "undefined" || obj == null || obj == "") {
        if (desc) {
            toast(desc)
        }
        return false;
    } else {
        return true;
    }
}

// 判断数据是否为空 并弹窗提示
const isEmptyToast = (array) => {
    array.some(item => {
        if (typeof item.data == "undefined" || item.data == null || item.data == "") {
            toast(item.title)
            return false;
        } else {
            return true;
        }
    })
}

// 验证手机号
const verifyTelPhone = (param) => {
    if (param == '') {
        toast('请输入手机号码')
        return false
    } else if (!(/^1[3456789]\d{9}$/.test(param))) {
        toast('请输入正确的手机号码')
        return false
    } else {
        return true
    }
}

// 验证验证码号    code 判断是否为6位
const verifyCode = (param) => {
    if (param == '' || param.length != 6) {
        toast('请输入正确的验证码')
        return false
    } else {
        return true
    }
}

// 验证密码
const verifyPassword = (param) => {
    if (param.length < 6 || param.length > 12) {
        toast('请输入6-12位密码')
        return false
    } else {
        return true
    }
}

// 验证姓名 2-5个字符
const verifyName = (param) => {
    if (param.length < 1) {
        toast('姓名不能少于1个字')
        return false
    } else {
        return true
    }
}

// 验证地址
const verifyAddress = (param) => {
    if (param.length < 5) {
        toast('详细地址不能少于5个字')
        return false
    } else {
        return true
    }
}

/* 
 弹窗提示    
 title 弹出信息
 icon     图标样式    默认为空
 */
const toast = (title, icon) => {
    uni.showToast({
        title,
        icon: icon || 'none'
    })
}

/* 
 身份证验证
 */
const verifyIDcard = code => {
    var city = {
        11: "北京",
        12: "天津",
        13: "河北",
        14: "山西",
        15: "内蒙古",
        21: "辽宁",
        22: "吉林",
        23: "黑龙江 ",
        31: "上海",
        32: "江苏",
        33: "浙江",
        34: "安徽",
        35: "福建",
        36: "江西",
        37: "山东",
        41: "河南",
        42: "湖北 ",
        43: "湖南",
        44: "广东",
        45: "广西",
        46: "海南",
        50: "重庆",
        51: "四川",
        52: "贵州",
        53: "云南",
        54: "西藏 ",
        61: "陕西",
        62: "甘肃",
        63: "青海",
        64: "宁夏",
        65: "新疆",
        71: "台湾",
        81: "香港",
        82: "澳门",
        91: "国外 "
    };
    var tip = "";
    var pass = true;
    if (!code || !/^\d{6}(18|19|20)?\d{2}(0[1-9]|1[012])(0[1-9]|[12]\d|3[01])\d{3}(\d|X)$/i.test(code)) {
        tip = "身份证号格式错误";
        pass = false;
    } else if (!city[code.substr(0, 2)]) {
        tip = "地址编码错误";
        pass = false;
    } else {
        //18位身份证需要验证最后一位校验位
        if (code.length == 18) {
            code = code.split('');
            //∑(ai×Wi)(mod 11)
            //加权因子
            var factor = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];
            //校验位
            var parity = [1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2];
            var sum = 0;
            var ai = 0;
            var wi = 0;
            for (var i = 0; i < 17; i++) {
                ai = code[i];
                wi = factor[i];
                sum += ai * wi;
            }
            var last = parity[sum % 11];
            if (parity[sum % 11] != code[17]) {
                tip = "校验位错误";
                pass = false;
            }
        }
    }
    return pass;
}

/* 
 数组去重
 */ 
const unique = data =>{
    return Array.from(new Set(data))
}

/* 
 baseUrl
 */ 
const baseUrl = http.BASE_URL
export default{
    baseUrl,
    isEmpty, // 判断是否为空
    isEmptyToast, // 判断数据是否为空 并弹窗提示
    verifyTelPhone, // 验证手机号
    verifyCode, // 验证验证码
    verifyPassword, // 验证密码
    verifyName, // 验证姓名
    verifyAddress, // 验证地址
    toast, // 弹窗
    verifyIDcard,    //验证身份证
    unique,    //数组去重
}

const dateFormat = (date, format) => {
    var time = new Date(date * 1000);
    var y = time.getFullYear();
    var month = time.getMonth() + 1;
    var d = time.getDate();
    var h = time.getHours();
    var m = time.getMinutes();
    var s = time.getSeconds();
    month = month < 10 ? ('0' + month) : month;
    m = m < 10 ? ('0' + m) : m;
    d = d < 10 ? ('0' + d) : d;
    s = s < 10 ? ('0' + s) : s;
    if (format == 'y-m') {
        return `${y}年${month}月`
    } else if (format == 'y-m-d') {
        return `${y}-${month}-${d}`
    } else {
        return `${y}-${month}-${d} ${h}:${m}:${s}`
    }
}

export {
    dateFormat
}