| | |
| | | /** |
| | | * Tools |
| | | * Tools - 工具集 |
| | | * @author Tevin |
| | | */ |
| | | |
| | | import moment from 'moment'; |
| | | import Taro from '@tarojs/taro'; |
| | | |
| | | export class Tools { |
| | | moment.locale('zh-cn'); |
| | | |
| | | export class Tools { |
| | | /** |
| | | * 显示消息 |
| | | * @param msg |
| | | * @param [duration=2000] |
| | | * @param [mask=false] |
| | | */ |
| | | static toast(msg) { |
| | | static toast(msg, duration = 2000, mask = false) { |
| | | Taro.showToast({ |
| | | title: msg, |
| | | icon: 'none', |
| | | mask: true, |
| | | duration: 2000, |
| | | mask, |
| | | duration, |
| | | }); |
| | | } |
| | | |
| | | /** |
| | | * 读取文件 base64 |
| | | * @param {File} file |
| | | * @return {Promise<string>} |
| | | * URL参数解析 |
| | | * @param {String} name |
| | | * @param {String} [search] |
| | | * @return {String|Null} |
| | | */ |
| | | static getFileBase64(file) { |
| | | return new Promise((resolve, reject) => { |
| | | const reader = new FileReader(); |
| | | reader.onload = () => resolve(reader.result); |
| | | reader.onerror = error => reject(error); |
| | | reader.readAsDataURL(file); |
| | | }); |
| | | static getUrlParam(name, search) { |
| | | if (process.env.TARO_ENV === 'weapp') { |
| | | return null; |
| | | } |
| | | search = search || window.location.search; |
| | | const reg = new RegExp('(^|&)' + name + '=([^&]*)(&|$)', 'i'); |
| | | const r = search.substr(1).match(reg); |
| | | if (r !== null) { |
| | | return decodeURIComponent(r[2]); |
| | | } else { |
| | | return null; |
| | | } |
| | | } |
| | | |
| | | /** |
| | |
| | | */ |
| | | static createGUID() { |
| | | return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) { |
| | | let r = Math.random() * 16 | 0, |
| | | v = c === 'x' ? r : ((r & 0x3) | 0x8); |
| | | let r = (Math.random() * 16) | 0, |
| | | v = c === 'x' ? r : (r & 0x3) | 0x8; |
| | | return v.toString(16); |
| | | }); |
| | | } |
| | | |
| | | /** |
| | | * 获取随机字符串 |
| | | * @param {number} long |
| | | * @return {string} |
| | | */ |
| | | static getRandomString(long) { |
| | | long = long || 32; |
| | | const template = 'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678'; |
| | | const count = template.length; |
| | | let result = ''; |
| | | for (let i = 0; i < long; i++) { |
| | | result += template.charAt(Math.floor(Math.random() * count)); |
| | | } |
| | | return result; |
| | | } |
| | | |
| | | /** |
| | |
| | | } |
| | | |
| | | /** |
| | | * 判断是否为未定义 |
| | | * @param {*} data |
| | | * @return {Boolean} |
| | | */ |
| | | static isUndefined(data) { |
| | | return Object.prototype.toString.call(data) === '[object Undefined]'; |
| | | } |
| | | |
| | | /** |
| | | * 判断是否为 null |
| | | * @param {*} data |
| | | * @return {Boolean} |
| | | */ |
| | | static isNull(data) { |
| | | return data === null; |
| | | return Object.prototype.toString.call(data) === '[object Null]'; |
| | | } |
| | | |
| | | /** |
| | |
| | | } |
| | | |
| | | /** |
| | | * 数组元素交换位置 |
| | | * @param {array} arr 数组 |
| | | * @param {number} fromIndex 要交换项目的位置 |
| | | * @param {number} toIndex 被交换项目的位置 |
| | | */ |
| | | static swapArray(arr, fromIndex, toIndex) { |
| | | // 先在目标位置新增一个和当前元素一样的元素,再把当前元素删除掉 |
| | | arr.splice(toIndex, 0, arr[fromIndex]); |
| | | // 如果拖动元素上移动,当前元素下标为 fromIndex+1 |
| | | if (fromIndex > toIndex) { |
| | | arr.splice(fromIndex + 1, 1); |
| | | } |
| | | // 如果拖动元素下移,当前元素下标还是 fromIndex |
| | | else { |
| | | arr.splice(fromIndex, 1); |
| | | } |
| | | return arr; |
| | | } |
| | | |
| | | /** |
| | | * 使用 moment.js 格式化时间戳 |
| | | * @param {Number|String} timestamp |
| | | * @param {String} [type='date'] |
| | |
| | | if (Tools.isString(timestamp)) { |
| | | // 全数值 |
| | | if (/^\d+$/.test(timestamp)) { |
| | | timestamp = parseInt(timestamp); |
| | | // 8位视为无连接符日期 |
| | | if (timestamp.length === 8) { |
| | | const day = |
| | | timestamp.substr(0, 4) + |
| | | '-' + |
| | | timestamp.substr(4, 2) + |
| | | '-' + |
| | | timestamp.substr(6, 2); |
| | | timestamp = new Date(timestamp).getTime(); |
| | | } |
| | | // 超过8位,视为时间戳 |
| | | else if (timestamp.length > 8) { |
| | | timestamp = parseInt(timestamp); |
| | | } |
| | | } |
| | | // 日期 |
| | | else { |
| | | try { |
| | | timestamp = (new Date(timestamp)).getTime(); |
| | | } catch (e) { |
| | | } |
| | | timestamp = new Date(timestamp).getTime(); |
| | | } catch (e) {} |
| | | } |
| | | } |
| | | if (timestamp < 9 * 10e8) { |
| | | // 数值转换:8位整型日期 转 时间戳 |
| | | if (timestamp < 9 * 10e6) { |
| | | const timeStr = timestamp + ''; |
| | | const dateStr = |
| | | timeStr.slice(0, 4) + '-' + timeStr.slice(4, 6) + '-' + timeStr.slice(6); |
| | | if (type === 'date') { |
| | | return dateStr; |
| | | } |
| | | timestamp = new Date(dateStr).getTime(); |
| | | } |
| | | // 数值转换:时间戳 秒 转 毫秒 |
| | | else if (timestamp < 9 * 10e8) { |
| | | timestamp *= 1000; |
| | | } |
| | | // 数值转换:14位整型日期 转 时间戳 |
| | | else if (/^2[012]\d{2}[01]\d[0123]\d[012]\d[0-5]\d[0-5]\d/.test(timestamp + '')) { |
| | | const timeStr = timestamp + ''; |
| | | const dateStr = |
| | | timeStr.slice(0, 4) + |
| | | '-' + |
| | | timeStr.slice(4, 6) + |
| | | '-' + |
| | | timeStr.slice(6, 8) + |
| | | ' ' + |
| | | timeStr.slice(8, 10) + |
| | | ':' + |
| | | timeStr.slice(10, 12) + |
| | | ':' + |
| | | timeStr.slice(12, 14); |
| | | if (type === 'dateTimeFull') { |
| | | return dateStr; |
| | | } |
| | | timestamp = new Date(dateStr).getTime(); |
| | | } |
| | | const curMoment = moment(timestamp); |
| | | if (type === 'date') { |
| | |
| | | if (minutes) { |
| | | words = minutes + '分' + words; |
| | | } |
| | | const hours = duration.get('hours'); |
| | | const hours = parseInt(duration.as('hours')); |
| | | if (hours) { |
| | | words = hours + '小时' + words; |
| | | } |
| | |
| | | /** |
| | | * 数值转换为金钱格式 |
| | | * @param {Number|String} number |
| | | * @param {String} [forRead=''] 便于阅读财务金额模式 |
| | | * @return {string} |
| | | */ |
| | | static moneyFormat(number) { |
| | | if (!number && typeof number !== 'number') { |
| | | static moneyFormat(number, forRead = '') { |
| | | if (!number && typeof number !== 'number' && typeof number !== 'string') { |
| | | return ''; |
| | | } |
| | | if (typeof number === 'string') { |
| | | number = Number(number) || 0; |
| | | } |
| | | const numFixed = number.toFixed(2); |
| | | const integer = parseInt(numFixed); |
| | | const decimal = numFixed.split('.')[1]; |
| | | return integer.toLocaleString() + '.' + decimal; |
| | | if (forRead === 'forRead') { |
| | | return number.toLocaleString('zh-cn', { |
| | | minimumFractionDigits: 2, |
| | | maximumFractionDigits: 2, |
| | | }); |
| | | } else { |
| | | return number.toFixed(2); |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * 数值转换为千分位格式 |
| | | * @param {Number|String} number - 传入的值 |
| | | * @param {String} decimalFormat - 处理小数的方式 - notRetain(不保留小数,没有小数时才生效),keepTwo(保留两位小数),keepThree(保留三位小数) |
| | | * @return {string} |
| | | */ |
| | | static thousandFormat(number, decimalFormat = 'keepTwo') { |
| | | if (!number && typeof number !== 'number' && typeof number !== 'string') { |
| | | return ''; |
| | | } |
| | | // 原始数据 |
| | | let num = number.toString(); |
| | | // 需要进千分位的数,小数点前的数才需要进行千分位计算,即整数位 |
| | | let needThousand = ''; |
| | | // 小数位 |
| | | let decimals = ''; |
| | | // 没有小数位 |
| | | if (!(num.indexOf('.') > -1)) { |
| | | needThousand = num.toString(); |
| | | if (decimalFormat === 'notRetain') { |
| | | decimals = ''; |
| | | } else if (decimalFormat === 'keepTwo') { |
| | | decimals = '00'; |
| | | } else if (decimalFormat === 'keepThree') { |
| | | decimals = '000'; |
| | | } |
| | | } |
| | | // 存在小数位时 |
| | | else if (num.indexOf('.') > -1) { |
| | | needThousand = num.split('.')[0].toString(); |
| | | if (decimalFormat === 'keepTwo') { |
| | | decimals = Number(num).toFixed(2).split('.')[1] || ''; |
| | | } else if (decimalFormat === 'keepThree') { |
| | | decimals = Number(num).toFixed(3).split('.')[1] || ''; |
| | | } |
| | | } |
| | | // 计算整数位长度 |
| | | let len = needThousand.length; |
| | | // 如果整数位小于3,直接返回 |
| | | if (len <= 3) { |
| | | return decimals ? needThousand + '.' + decimals : needThousand; |
| | | } |
| | | // 整数位大于3 |
| | | else { |
| | | // 小数位后的值 |
| | | let temp = ''; |
| | | // 对整数取余 |
| | | let remainder = len % 3; |
| | | decimals ? (temp = '.' + decimals) : temp; |
| | | if (remainder > 0) { |
| | | // 不是3的整数倍 |
| | | return ( |
| | | needThousand.slice(0, remainder) + |
| | | ',' + |
| | | needThousand.slice(remainder, len).match(/\d{3}/g)?.join(',') + |
| | | temp |
| | | ); |
| | | } else { |
| | | // 3的整数倍 |
| | | return needThousand.slice(0, len).match(/\d{3}/g)?.join(',') + temp; |
| | | } |
| | | } |
| | | } |
| | | |
| | | /** |
| | |
| | | /** |
| | | * 求小数点后的数据长度 |
| | | * @param {Number|String} num |
| | | * @private |
| | | * @return {Number} |
| | | */ |
| | | static getDecimalLength(num) { |
| | | let t = 0; |
| | | try { |
| | | t = num.toString().split('.')[1].length; |
| | | } catch (e) { |
| | | } |
| | | } catch (e) {} |
| | | return t; |
| | | } |
| | | |
| | |
| | | return /^1[3456789]\d{9}$/.test('' + phone); |
| | | } |
| | | |
| | | /** |
| | | * 转换周数到日期 |
| | | * @param {Number} year |
| | | * @param {Number} week |
| | | * @param {Number} weekDay 需要输出星期几对应的日期 (1~7) |
| | | * @return {String} |
| | | */ |
| | | static transWeekIndexToDate(year, week, weekDay) { |
| | | if (weekDay < 1 && weekDay > 7) { |
| | | return ''; |
| | | } |
| | | const weekDate = moment(year + '-' + week, 'YYYY-WW'); |
| | | const firstDay = weekDate.startOf('week'); |
| | | return firstDay.add(weekDay - 1, 'day').format('YYYY-MM-DD'); |
| | | } |
| | | |
| | | } |
| | | /** |
| | | * 防抖函数(一段时间周期内,仅执行最后一次回调) |
| | | * 当持续触发事件时,只在事件最后一次触发后的一段时间内执行回调函数 |
| | | * 如果在这个时间内再次触发事件,就重新计算时间 |
| | | * @param {Function} fnc |
| | | * @param {Number} wait |
| | | * @returns {Function} |
| | | * @tutorial Tools.debounce(<fnc>, <wait>)(<DebounceKey>) |
| | | */ |
| | | static debounce(fnc, wait = 200) { |
| | | return key => { |
| | | if (!key || !Tools.isString(key)) { |
| | | throw 'Debounce function need a key!'; |
| | | } |
| | | const timer = Tools.debounce['dKey-' + key]; |
| | | if (timer) { |
| | | clearTimeout(timer); |
| | | } |
| | | Tools.debounce['dKey-' + key] = setTimeout(fnc, wait); |
| | | }; |
| | | } |
| | | |
| | | /** |
| | | * 节流函数(本段时间内,仅执行第一次回调) |
| | | * 在一定时间内只能触发一次函数执行 |
| | | * 如果这个时间内再次触发,则忽略,直到下一个时间段再次触发 |
| | | * @param {Function} fnc |
| | | * @param {Number} wait |
| | | * @returns {function(key):void} |
| | | * @tutorial Tools.throttle(<fnc>, <wait>)(<ThrottleKey>) |
| | | */ |
| | | static throttle(fnc, wait = 200) { |
| | | return key => { |
| | | if (!key || !Tools.isString(key)) { |
| | | throw 'Throttle function need a key!'; |
| | | } |
| | | const previous = Tools.throttle['tKey-' + key] || 0; |
| | | const now = Date.now(); |
| | | if (now - previous > wait) { |
| | | Tools.throttle['tKey-' + key] = now; |
| | | fnc(); |
| | | } |
| | | }; |
| | | } |
| | | } |
| | | |
| | | // h5 中,实现 rem 转换 px |
| | | if (process.env.NODE_ENV === 'development' && process.env.TARO_ENV === 'h5') { |
| | | window.rem = val => { |
| | | const p1 = { |
| | | x: parseFloat(Taro.pxTransform(10, 750)), |
| | | y: 10, |
| | | }; |
| | | const p2 = { |
| | | x: parseFloat(Taro.pxTransform(1000, 750)), |
| | | y: 1000, |
| | | }; |
| | | const value = typeof val === 'number' ? val : parseFloat(val); |
| | | const px = ((value - p1.x) * (p2.y - p1.y)) / (p2.x - p1.x) + p1.y; |
| | | console.info(Math.round(px) + 'px'); |
| | | }; |
| | | } |