| | |
| | | /** |
| | | * Tools |
| | | * Tools - 工具集 |
| | | * @author Tevin |
| | | */ |
| | | |
| | |
| | | import Taro from '@tarojs/taro'; |
| | | |
| | | export class Tools { |
| | | |
| | | /** |
| | | * 显示消息 |
| | | * @param msg |
| | |
| | | } |
| | | |
| | | /** |
| | | * 读取文件 base64 |
| | | * @param {File} file |
| | | * @return {Promise<string>} |
| | | */ |
| | | 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); |
| | | }); |
| | | } |
| | | |
| | | /** |
| | | * 生成 GUID |
| | | * @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); |
| | | let r = (Math.random() * 16) | 0, |
| | | v = c === 'x' ? r : (r & 0x3) | 0x8; |
| | | return v.toString(16); |
| | | }); |
| | | } |
| | |
| | | result += template.charAt(Math.floor(Math.random() * count)); |
| | | } |
| | | return result; |
| | | } |
| | | |
| | | /** |
| | | * 检查网络状态 |
| | | */ |
| | | static checkOnlineState(callback) { |
| | | // 网页模式 |
| | | if (process.env.TARO_ENV === 'h5') { |
| | | // 网络已开启 |
| | | if (navigator.onLine) { |
| | | // 用图片资源测试网络状态 |
| | | const img = new Image(); |
| | | img.onload = () => { |
| | | img.onload = null; |
| | | callback && callback(true); |
| | | }; |
| | | img.onerror = () => { |
| | | img.onerror = null; |
| | | callback && callback(false); |
| | | }; |
| | | img.src = 'http://gz.zhiheiot.com/disp/download/buildArchive/online.png?t=' + Date.now(); |
| | | } |
| | | // 网络未开启 |
| | | else { |
| | | callback && callback(false); |
| | | } |
| | | } |
| | | // 补充:小程序模式用 getNetworkType |
| | | } |
| | | |
| | | /** |
| | |
| | | } |
| | | |
| | | /** |
| | | * 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 (/^\d+$/.test(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(); |
| | | 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) { |
| | |
| | | // 日期 |
| | | else { |
| | | try { |
| | | timestamp = (new Date(timestamp)).getTime(); |
| | | } catch (e) { |
| | | } |
| | | timestamp = new Date(timestamp).getTime(); |
| | | } catch (e) {} |
| | | } |
| | | } |
| | | // 转为数值的无连接符日期 |
| | | // 数值转换:8位整型日期 转 时间戳 |
| | | if (timestamp < 9 * 10e6) { |
| | | const timeStr = timestamp + ''; |
| | | const day = timeStr.substr(0, 4) + '-' + |
| | | timeStr.substr(4, 2) + '-' + timeStr.substr(6, 2); |
| | | timestamp = (new Date(day)).getTime(); |
| | | const dateStr = |
| | | timeStr.slice(0, 4) + '-' + timeStr.slice(4, 6) + '-' + timeStr.slice(6); |
| | | if (type === 'date') { |
| | | return dateStr; |
| | | } |
| | | timestamp = new Date(dateStr).getTime(); |
| | | } |
| | | // 按秒时间戳 |
| | | // 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') { |
| | |
| | | /** |
| | | * 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) { |
| | | static moneyFormat(number, forRead = '') { |
| | | if (!number && typeof number !== 'number' && typeof number !== 'string') { |
| | | return ''; |
| | | } |
| | | if (typeof number === 'string') { |
| | | number = Number(number) || 0; |
| | | } |
| | | return number.toFixed(2); |
| | | if (forRead === 'forRead') { |
| | | return number.toLocaleString('zh-cn', { |
| | | minimumFractionDigits: 2, |
| | | maximumFractionDigits: 2, |
| | | }); |
| | | } else { |
| | | 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; |
| | | } |
| | | |
| | |
| | | |
| | | /** |
| | | * 转换周数到日期 |
| | | * @param year |
| | | * @param week |
| | | * @param weekDay 需要输出星期几对应的日期 (1~7) |
| | | * @return {Date} |
| | | * @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]); |
| | |
| | | } |
| | | |
| | | /** |
| | | * 显示调试面板(仅支持H5) |
| | | * @param cssSelector |
| | | * @param callback |
| | | * 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 $_showDevConsole(cssSelector, callback) { |
| | | // 只支持 h5 编译 |
| | | if (process.env.TARO_ENV !== 'h5') { |
| | | return; |
| | | } |
| | | const fileref = document.createElement('script'); |
| | | fileref.setAttribute('type', 'text/javascript'); |
| | | if (window.location.protocol === 'https:') { |
| | | fileref.setAttribute('src', 'https://cdn.jsdelivr.net/npm/eruda'); |
| | | } else { |
| | | fileref.setAttribute('src', 'http://cdn.jsdelivr.net/npm/eruda'); |
| | | } |
| | | document.getElementsByTagName('head')[0].appendChild(fileref); |
| | | const erudaTimer = setInterval(() => { |
| | | if (window.eruda) { |
| | | clearInterval(erudaTimer); |
| | | const container = document.createElement('div'); |
| | | if (cssSelector) { |
| | | document.querySelector(cssSelector).appendChild(container); |
| | | } else { |
| | | document.getElementsByTagName('body')[0].appendChild(container); |
| | | } |
| | | window.eruda.init({ |
| | | container: container, |
| | | useShadowDom: false, |
| | | }); |
| | | setTimeout(() => { |
| | | const devTool = document.querySelector('.eruda-dev-tools'); |
| | | devTool.style.display = 'block'; |
| | | devTool.style.opacity = '1'; |
| | | devTool.style.height = '70%'; |
| | | console.warn('=====【艾信App调试特别模式】====='); |
| | | console.warn('点击右下角悬浮工具箱图标可以折叠面板'); |
| | | }, 50); |
| | | setTimeout(() => { |
| | | callback(); |
| | | }, 100); |
| | | static debounce(fnc, wait = 200) { |
| | | return key => { |
| | | if (!key || !Tools.isString(key)) { |
| | | throw 'Debounce function need a key!'; |
| | | } |
| | | }, 100); |
| | | 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, |
| | | x: parseFloat(Taro.pxTransform(10, 750)), |
| | | y: 10, |
| | | }; |
| | | const p2 = { |
| | | x: parseFloat(Taro.pxTransform(1000, 750)), y: 1000, |
| | | 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; |
| | | const px = ((value - p1.x) * (p2.y - p1.y)) / (p2.x - p1.x) + p1.y; |
| | | console.info(Math.round(px) + 'px'); |
| | | }; |
| | | } |
| | | |
| | | global.Tools = Tools; |