| | |
| | | import Taro from '@tarojs/taro'; |
| | | |
| | | export class Tools { |
| | | |
| | | /** |
| | | * 显示消息 |
| | | * @param msg |
| | |
| | | * @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); |
| | | }); |
| | | } |
| | |
| | | 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) {} |
| | | } |
| | | } |
| | | // 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); |
| | | const dateStr = |
| | | timeStr.slice(0, 4) + '-' + timeStr.slice(4, 6) + '-' + timeStr.slice(6); |
| | | if (type === 'date') { |
| | | return dateStr; |
| | | } |
| | | timestamp = (new Date(dateStr)).getTime(); |
| | | timestamp = new Date(dateStr).getTime(); |
| | | } |
| | | // 数值转换:时间戳 秒 转 毫秒 |
| | | else if (timestamp < 9 * 10e8) { |
| | |
| | | // 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); |
| | | 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(); |
| | | timestamp = new Date(dateStr).getTime(); |
| | | } |
| | | const curMoment = moment(timestamp); |
| | | if (type === 'date') { |
| | |
| | | let t = 0; |
| | | try { |
| | | t = num.toString().split('.')[1].length; |
| | | } catch (e) { |
| | | } |
| | | } catch (e) {} |
| | | return t; |
| | | } |
| | | |
| | |
| | | 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, |
| | | 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; |
| | | global.Tools = Tools; |