生产力有两项，一项是人，一项是工具。工具用得好不好，决定咱们上班早不早。
前言
咱们在业务开发过程中，常常会反复用到数据类型校验，日期格式化、数据加密、随机数生成、节流函数等工具办法，这些工具类函数，适当封装整顿不便拿来就用，能够进步开发效率。
数据类型校验
兴许你喜爱把办法封装成ES6 Class 的method，然而思考到应用的时候还须要实例化比拟麻烦（可能你要反驳，写成static不就能够了吗，当然能够），不过我还是习惯把办法挂在对象的属性上，如下：
const Validator = {};/** * 判断是否是数字, 如：'123.1' 、123.1 都是true * * @static * @param {any} value * @returns */Validator.isNumber = (value) => { const re = /^[0-9]+\.?[0-9]*$/; return re.test(value);};/** * 整形数字: 2=true; '2'=true * * @static * @param {any} value * @returns */Validator.isIntNumber = (value) => { if (value === '0' || value === 0) { return true; } const re = /^[1-9]+[0-9]*]*$/; return re.test(value);};/** * 整形数 2 = true; '2' = false * 这个办法会严格辨别string类型的数字 * @static * @param {any} val * @returns */Validator.isInt = (val) => { if (Validator.isIntNumber(val)) { return typeof val === 'number'; } return false;};/** * 是不是浮点型, 如：'123.1' = false 、123.1 = true * * @static * @param {any} value * @returns */Validator.isFloat = (value) => { const result = Validator.isNumber(value); return result && parseFloat === value;};/** * 工夫戳判断 * * @static * @param {any} value * @returns */Validator.isTimestamp = (value) => { return typeof value === 'number';};/** * 验证手机号 * * @static * @param {any} value * @returns */Validator.isPhone = (value) => { const reg = /^0?(1[34578])[0-9]{9}$/; return reg.test(value);};/** * Url验证 * * @static * @param {any} value * @returns */Validator.isUrl = (value) => { const strRegex = /(http|ftp|https):\/\/[\w\-_]+(\.[\w\-_]+)+([\w\-\.,@?^=%&:/~\+#]*[\w\-\@?^=%&/~\+#])?/; return strRegex.test(value);};/** * 是否大写字母 * * @static * @param {any} value * @returns */Validator.isCapital = (value) => { const reg = /[A-Z]/; return reg.test(value);};/** * 是否为空 * * @static * @param {any} value * @returns */Validator.isEmpty = (value) => { // return value?true:false; return !!value;};/** * 是否是一个对象 * * @static * @param {any} value 要判断的对象 * @returns */Validator.isObject = (value) => { const keys = Object.keys(value); const values = Object.values(value); console.log('is object typeof value is:', typeof value); return keys.length > 0 && values.length > 0 && typeof value === 'object';};/** * 是否为空 * * @static * @param {any} value * @returns */Validator.isNotEmpty = (value) => { return !this.isEmpty(value);};Validator.isMobilePhone = (value) => { const reg = /^(\+?0?86\-?)?1[345789]\d{9}$/; return reg.test(value);};/** * 是否是monogoDB里的objectId值 * * @static * @param {any} value * @returns */Validator.isMongoDBObjectId = (value) => { return objectId.isValid(value);};/** * 此办法非凡办法。obj只能传一个对象。 * * @static * @param {any} obj 对象 * @param {any} value 值 */Validator.isObjectValue = (obj, value) => { if (!Validator.isObject(obj)) { return false; } return Object.values(obj).includes(value);};/** * 检测邮箱 * @param email * @returns {boolean} */Validator.testEmail = (email) => { const reg = /^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/; return reg.test(email);};/** * 身份证号码验证 * * @param cardNo {String} 证件号码 * @returns info {Object} 身份证信息. * */Validator.getIdCardInfo = (cardNo) => { const info = { isTrue: false, // 身份证号是否无效。默认为 false year: null, // 出世年。默认为null month: null, // 出世月。默认为null day: null, // 出世日。默认为null isMale: false, // 是否为男性。默认false isFemale: false, // 是否为女性。默认false }; if (!cardNo && cardNo.length !== 15 && cardNo.length !== 18) { info.isTrue = false; return info; } if (cardNo.length === 15) { const year = cardNo.substring(6, 8); const month = cardNo.substring(8, 10); const day = cardNo.substring(10, 12); const p = cardNo.substring(14, 15); // 性别位 const birthday = new Date(year, parseFloat(month) - 1, parseFloat(day), 12, 0, 0, 0); // 对于老身份证中的年龄则不需思考千年虫问题而应用getYear()办法 if (birthday.getYear() !== parseFloat(year) || birthday.getMonth() !== parseFloat(month) - 1 || birthday.getDate() !== parseFloat(day)) { info.isTrue = false; } else { info.isTrue = true; info.year = birthday.getFullYear(); info.month = birthday.getMonth() + 1; info.day = birthday.getDate(); if (p % 2 === 0) { info.isFemale = true; info.isMale = false; } else { info.isFemale = false; info.isMale = true; } } return info; } if (cardNo.length === 18) { const year = cardNo.substring(6, 10); const month = cardNo.substring(10, 12); const day = cardNo.substring(12, 14); const p = cardNo.substring(14, 17); const birthday = new Date(year, parseFloat(month) - 1, parseFloat(day), 12, 0, 0, 0); // 这里用getFullYear()获取年份，防止千年虫问题 if (birthday.getFullYear() !== parseFloat(year) || birthday.getMonth() !== parseFloat(month) - 1 || birthday.getDate() !== parseFloat(day)) { info.isTrue = false; return info; } const Wi = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1]; // 加权因子 const Y = [1, 0, 10, 9, 8, 7, 6, 5, 4, 3, 2]; // 身份证验证位值.10代表X // 验证校验位 let sum = 0; // 申明加权求和变量 const _cardNo = cardNo.split(''); if (_cardNo[17].toLowerCase() === 'x') { _cardNo[17] = 10; // 将最初位为x的验证码替换为10不便后续操作 } for (let i = 0; i < 17; i++) { sum += Wi[i] * _cardNo[i]; // 加权求和 } const i = sum % 11; // 失去验证码所地位 if (_cardNo[17] !== Y[i]) { info.isTrue = false; return info; } info.isTrue = true; info.year = birthday.getFullYear(); info.month = birthday.getMonth() + 1; info.day = birthday.getDate(); if (p % 2 === 0) { info.isFemale = true; info.isMale = false; } else { info.isFemale = false; info.isMale = true; } return info; } return info;};module.exports = Validator;日期格式化
须要引入一个package，moment用来解决工夫比拟不便。
const moment = require('moment');const DateHandler = {};/** * 获取当初工夫(13位工夫戳) 1641185119507 * @returns {number|*} */DateHandler.getNowTime = () => { return new Date().getTime();};/** * 格式化工夫戳 * @param timestamp * @param patten */DateHandler.formatDate = (timestamp, patten) => { console.log(timestamp); return moment(timestamp).format(patten);};/** * excel读取2018/01/01这种工夫格局是会将它装换成数字相似于46254.1545151415 * @param numb numb是传过来的整数数字 * @param format 是之间距离的符号 * @returns {string} */DateHandler.formatExcelDate = (numb, format) => { const time = new Date((numb - 1) * 24 * 3600000 + 1); time.setYear(time.getFullYear() - 70); const year = `${time.getFullYear()}`; const month = `${time.getMonth() + 1}`; const date = `${time.getDate() - 1}`; if (format && format.length === 1) { return year + format + month + format + date; } return year + (month < 10 ? `0${month}` : month) + (date < 10 ? `0${date}` : date);};/** * 毫秒格式化 * @param t (ms) * @returns {string} */DateHandler.formatTime = (t) => { const HOUR = 1000 * 60 * 60; const d = parseInt(t / (HOUR * 24)); const h = parseInt((t % (HOUR * 24)) / (HOUR)); const m = parseInt((t % (HOUR)) / (1000 * 60)); const s = parseInt((t % (1000 * 60)) / 1000); let text = ''; d && (text += `${d}天`); h && (text += `${h}小时`); m && (text += `${m}分`); s && (text += `${s}秒`); return text || '-';};module.exports = DateHandler;随机数生成
须要用到的package有，randomstring，lodash，dateformat
const randomstring = require('randomstring');const dateformat = require('dateformat');const _ = require('lodash');/** * an integer between start and end * @param start * @param end * @returns {number} * @constructor */NumHandler.Random = (start, end) => { return _.random(start, end);};NumHandler.removeEmptyField = (list, field) => { list.forEach(v => (v[field].length === 0 ? delete v[field] : this.removeEmptyField(v[field], field))); return list;};/** * 生成随机编号 * @param n 位数 * @param collection * @returns {string} */NumHandler.generateRandom = (n, collection = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9']) => { let res = ''; for (let i = 0; i < n; i++) { const id = Math.ceil(Math.random() * (collection.length - 1)); res += collection[id]; } return res;};const Collection_Num = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9'];NumHandler.generateUUID = () => { const Collection_Alpha = ['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']; return NumHandler.generateRandom(31, Collection_Num.concat(Collection_Alpha));};/** * 生成订单编号 * * @static */NumHandler.generateOrderCode = () => { const time = dateformat(this.getNowTime(), 'yyyymmddHHMMss'); const randNumber = this.generateRandom(3, Collection_Num); return `${time}${randNumber}`;};/** * 生成序列号 * * @static * @returns */NumHandler.generateSerNum = () => { const time = dateformat(this.getNowTime(), 'yyyymmddHHMMss'); const randomNum = randomstring.generate({ length: 12, charset: 'numeric' }); return `${time}2${randomNum}`;};module.exports = NumHandler;总结
工欲善其事必先利其器。有了属于本人的这把利器，兴许能力在抗议加班的时候不至于太怂~