| | |
| | | /** |
| | | * Tools |
| | | * Tools - 工具集 |
| | | * @author Tevin |
| | | */ |
| | | |
| | |
| | | import Taro from '@tarojs/taro'; |
| | | |
| | | 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; |
| | | } |
| | | } |
| | | |
| | | /** |
| | |
| | | * @return {string} |
| | | */ |
| | | 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); |
| | | return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) { |
| | | 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; |
| | | } |
| | |
| | | * @return {string} |
| | | */ |
| | | static moneyFormat(number) { |
| | | if (!number && typeof number !== 'number') { |
| | | 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; |
| | | return number.toFixed(2); |
| | | } |
| | | |
| | | /** |
| | |
| | | /** |
| | | * 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) { |
| | | const yearStart = moment([year, 0, 1]); |
| | | const dayLong = 24 * 60 * 60 * 1000; |
| | | const firstWeekLong = (7 - yearStart.day()) * dayLong; |
| | | const weeksLong = (week - 1) * 7 * dayLong; |
| | | const weekDayLong = weekDay * dayLong; |
| | | const dayTimestamp = yearStart.valueOf() + firstWeekLong + weeksLong + weekDayLong; |
| | | return moment(dayTimestamp).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} |
| | | */ |
| | | static debounce(fnc, wait = 200) { |
| | | let timeout = null; |
| | | return function() { |
| | | const context = this; |
| | | const args = arguments; |
| | | if (timeout) { |
| | | clearTimeout(timeout); |
| | | } |
| | | const callNow = !timeout; |
| | | timeout = setTimeout(() => { |
| | | timeout = null; |
| | | }, wait); |
| | | if (callNow) { |
| | | fnc.apply(context, args); |
| | | } |
| | | }; |
| | | } |
| | | |
| | | /** |
| | | * 节流函数(一段时间周期内,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} |
| | | */ |
| | | static throttle(fnc, wait = 200) { |
| | | let previous = 0; |
| | | return function() { |
| | | const context = this; |
| | | const args = arguments; |
| | | const now = new Date(); |
| | | if (now - previous > wait) { |
| | | fnc.apply(context, args); |
| | | previous = now; |
| | | } |
| | | }; |
| | | } |
| | | } |
| | | |
| | | // 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'); |
| | | }; |
| | | } |
| | | |
| | | global.Tools = Tools; |