134 lines
3.2 KiB
JavaScript
134 lines
3.2 KiB
JavaScript
import dayjs from 'dayjs';
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const formatTime = (date, template) => dayjs(date).format(template);
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/**
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* 格式化价格数额为字符串
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* 可对小数部分进行填充，默认不填充
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* @param price 价格数额，以分为单位!
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* @param fill 是否填充小数部分 0-不填充 1-填充第一位小数 2-填充两位小数
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*/
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function priceFormat(price, fill = 0) {
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if (isNaN(price) || price === null || price === Infinity) {
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return price;
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}
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let priceFormatValue = Math.round(parseFloat(`${price}`) * 10 ** 8) / 10 ** 8; // 恢复精度丢失
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priceFormatValue = `${Math.ceil(priceFormatValue) / 100}`; // 向上取整，单位转换为元，转换为字符串
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if (fill > 0) {
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// 补充小数位数
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if (priceFormatValue.indexOf('.') === -1) {
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priceFormatValue = `${priceFormatValue}.`;
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}
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const n = fill - priceFormatValue.split('.')[1]?.length;
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for (let i = 0; i < n; i++) {
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priceFormatValue = `${priceFormatValue}0`;
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}
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}
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return priceFormatValue;
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}
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/**
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* 获取cdn裁剪后链接
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*
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* @param {string} url 基础链接
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* @param {number} width 宽度，单位px
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* @param {number} [height] 可选，高度，不填时与width同值
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*/
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const cosThumb = (url, width, height = width) => {
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if (url.indexOf('?') > -1) {
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return url;
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}
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if (url.indexOf('http://') === 0) {
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url = url.replace('http://', 'https://');
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}
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return `${url}?imageMogr2/thumbnail/${~~width}x${~~height}`;
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};
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const get = (source, paths, defaultValue) => {
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if (typeof paths === 'string') {
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paths = paths
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.replace(/\[/g, '.')
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.replace(/\]/g, '')
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.split('.')
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.filter(Boolean);
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}
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const { length } = paths;
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let index = 0;
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while (source != null && index < length) {
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source = source[paths[index++]];
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}
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return source === undefined || index === 0 ? defaultValue : source;
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};
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let systemWidth = 0;
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/** 获取系统宽度，为了减少启动消耗所以在函数里边做初始化 */
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export const loadSystemWidth = () => {
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if (systemWidth) {
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return systemWidth;
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}
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try {
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({ screenWidth: systemWidth, pixelRatio } = wx.getSystemInfoSync());
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} catch (e) {
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systemWidth = 0;
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}
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return systemWidth;
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};
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/**
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* 转换rpx为px
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*
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* @description
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* 什么时候用？
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* - 布局(width: 172rpx)已经写好, 某些组件只接受px作为style或者prop指定
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*
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*/
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const rpx2px = (rpx, round = false) => {
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loadSystemWidth();
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// px / systemWidth = rpx / 750
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const result = (rpx * systemWidth) / 750;
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if (round) {
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return Math.floor(result);
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}
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return result;
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};
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/**
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* 手机号码*加密函数
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* @param {string} phone 电话号
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* @returns
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*/
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const phoneEncryption = (phone) => {
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return phone.replace(/(\d{3})\d{4}(\d{4})/, '$1****$2');
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};
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// 内置手机号正则字符串
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const innerPhoneReg =
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'^1(?:3\\d|4[4-9]|5[0-35-9]|6[67]|7[0-8]|8\\d|9\\d)\\d{8}$';
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/**
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* 手机号正则校验
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* @param phone 手机号
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* @param phoneReg 正则字符串
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* @returns true - 校验通过 false - 校验失败
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*/
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const phoneRegCheck = (phone) => {
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const phoneRegExp = new RegExp(innerPhoneReg);
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return phoneRegExp.test(phone);
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};
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module.exports = {
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formatTime,
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priceFormat,
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cosThumb,
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get,
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rpx2px,
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phoneEncryption,
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phoneRegCheck,
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};
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