| | |
| | | */ |
| | | |
| | | import moment from 'moment'; |
| | | import Taro from '@tarojs/taro'; |
| | | |
| | | export class Tools { |
| | | |
| | |
| | | } |
| | | |
| | | /** |
| | | * 显示消息 |
| | | * @param msg |
| | | */ |
| | | static toast(msg) { |
| | | Taro.showToast({ |
| | | title: msg, |
| | | icon: 'none', |
| | | mask: true, |
| | | duration: 2000, |
| | | }); |
| | | } |
| | | |
| | | /** |
| | | * 读取文件 base64 |
| | | * @param {File} file |
| | | * @return {Promise<string>} |
| | |
| | | reader.onerror = error => reject(error); |
| | | reader.readAsDataURL(file); |
| | | }); |
| | | } |
| | | |
| | | /** |
| | | * 关闭页面 loading |
| | | */ |
| | | static closePageLoading() { |
| | | const $Loading = document.getElementById('loading'); |
| | | $Loading.className = 'loading off'; |
| | | setTimeout(() => { |
| | | if ($Loading.parentNode) { |
| | | $Loading.parentNode.removeChild($Loading); |
| | | } |
| | | }, 300); |
| | | } |
| | | |
| | | /** |
| | | * 计算浏览器滚动条宽度 |
| | | * @param {HTMLElement} elm |
| | | * @return {Number} |
| | | */ |
| | | static getScrollbarWidth(elm) { |
| | | // 传入了元素,计算元素滚动条宽度 |
| | | if (elm) { |
| | | return elm.offsetWidth - elm.clientWidth; |
| | | } |
| | | // 没传入元素,计算系统滚动条宽度 |
| | | else { |
| | | let dom = document.createElement('div'), |
| | | styles = { |
| | | width: '100px', |
| | | height: '100px', |
| | | // 设置滚动条 |
| | | overflowY: 'scroll', |
| | | }, i, scrollbarWidth; |
| | | for (i in styles) dom.style[i] = styles[i]; |
| | | document.body.appendChild(dom); |
| | | scrollbarWidth = dom.offsetWidth - dom.clientWidth; |
| | | dom.remove(); |
| | | return scrollbarWidth; |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * 设置元素样式 |
| | | * @param {HTMLElement} elm |
| | | * @param {Object} styles |
| | | */ |
| | | static setElementStyles(elm, styles) { |
| | | Object.keys(styles).forEach(prop => { |
| | | elm.style[prop] = styles[prop]; |
| | | }); |
| | | } |
| | | |
| | | /** |
| | | * 创建 css 带前缀样式 |
| | | * @param {String} key |
| | | * @param {String} value |
| | | * @return {Object} |
| | | */ |
| | | static createPrefixesCss(key, value) { |
| | | return { |
| | | ['Webkit' + key.substr(0, 1).toUpperCase() + key.substr(1)]: value, |
| | | ['Moz' + key.substr(0, 1).toUpperCase() + key.substr(1)]: value, |
| | | key: value, |
| | | }; |
| | | } |
| | | |
| | | /** |
| | | * 创建 transform translate3d 样式 |
| | | * @param {Number} x = 0 |
| | | * @param {Number} y = 0 |
| | | * @param {Number} z = 0 |
| | | * @return {Object} |
| | | */ |
| | | static createTransformTs3d(x = 0, y = 0, z = 0) { |
| | | return Tools.createPrefixesCss('transform', `translate3d(${x}px, ${y}px, ${z}px)`); |
| | | } |
| | | |
| | | /** |
| | | * 获取元素计算后的样式 |
| | | * @param {HTMLElement} element |
| | | * @param {String} styleName |
| | | * @return {String} |
| | | */ |
| | | static getComputedStyle(element, styleName) { |
| | | if (element.currentStyle) { |
| | | return element.currentStyle[styleName]; |
| | | } else { |
| | | return window.getComputedStyle(element, null)[styleName] || |
| | | document.defaultView.getComputedStyle(element, null)[styleName]; |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * 判断元素是否在容器内 |
| | | * @param {HTMLElement} targetElm |
| | | * @param {HTMLElement} containerElm |
| | | * @return {Boolean} |
| | | */ |
| | | static isElementInsideContainer(targetElm, containerElm) { |
| | | let inside = false; |
| | | while (targetElm.parentElement) { |
| | | if (targetElm.parentElement === containerElm) { |
| | | inside = true; |
| | | break; |
| | | } else { |
| | | targetElm = targetElm.parentElement; |
| | | } |
| | | } |
| | | return inside; |
| | | } |
| | | |
| | | /** |
| | |
| | | return true; |
| | | } |
| | | |
| | | static getObjDataByPath(obj, path) { |
| | | const arr = path.split('.'); |
| | | const reg2 = /\[(.*)]/g; |
| | | const reg4 = /\w+(?=\[)|(?<=\[)(.*?)(?=])/g; |
| | | let stack = []; |
| | | let temp; |
| | | arr.forEach(item => { |
| | | if (reg2.test(item)) { |
| | | while ((temp = reg4.exec(item))) { |
| | | stack.push(temp[0]); |
| | | } |
| | | } else { |
| | | stack.push(item); |
| | | } |
| | | }); |
| | | stack = stack.map(item => { |
| | | return item.replace(/^['"`]|['"`]$/g, ''); |
| | | }); |
| | | try { |
| | | return stack.reduce((pre, next) => { |
| | | return pre[next]; |
| | | }, obj); |
| | | } catch (err) { |
| | | return undefined; |
| | | } |
| | | } |
| | | // static getObjDataByPath(obj, path) { |
| | | // const arr = path.split('.'); |
| | | // const reg2 = /\[(.*)]/g; |
| | | // const reg4 = /\w+(?=\[)|(?<=\[)(.*?)(?=])/g; |
| | | // let stack = []; |
| | | // let temp; |
| | | // arr.forEach(item => { |
| | | // if (reg2.test(item)) { |
| | | // while ((temp = reg4.exec(item))) { |
| | | // stack.push(temp[0]); |
| | | // } |
| | | // } else { |
| | | // stack.push(item); |
| | | // } |
| | | // }); |
| | | // stack = stack.map(item => { |
| | | // return item.replace(/^['"`]|['"`]$/g, ''); |
| | | // }); |
| | | // try { |
| | | // return stack.reduce((pre, next) => { |
| | | // return pre[next]; |
| | | // }, obj); |
| | | // } catch (err) { |
| | | // return undefined; |
| | | // } |
| | | // } |
| | | |
| | | /** |
| | | * 统计字符串占位宽度 |