| | |
| | | /** |
| | | * Tools |
| | | * Tools - 工具集 |
| | | * @author Tevin |
| | | */ |
| | | |
| | |
| | | } |
| | | |
| | | /** |
| | | * 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} |
| | | */ |
| | |
| | | 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'] |
| | |
| | | /** |
| | | * 求小数点后的数据长度 |
| | | * @param {Number|String} num |
| | | * @private |
| | | * @return {Number} |
| | | */ |
| | | static getDecimalLength(num) { |
| | | let t = 0; |
| | |
| | | |
| | | /** |
| | | * 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]); |
| | |
| | | const weekDayLong = weekDay * dayLong; |
| | | const dayTimestamp = yearStart.valueOf() + firstWeekLong + weeksLong + weekDayLong; |
| | | return moment(dayTimestamp).format('YYYY-MM-DD'); |
| | | } |
| | | |
| | | /** |
| | | * 显示调试面板(仅支持H5) |
| | | * @param cssSelector |
| | | * @param callback |
| | | */ |
| | | 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); |
| | | callback(); |
| | | } |
| | | }, 100); |
| | | } |
| | | |
| | | } |