add: 增加新功能

src/utils/index.ts

@@ -1,10 +1,11 @@
+import { BigNumber } from "bignumber.js";
 /**
  * Check if an element has a class
  * @param {HTMLElement} ele
  * @param {string} cls
  * @returns {boolean}
  */
-export function hasClass(ele : HTMLElement, cls : string) {
+export function hasClass(ele: HTMLElement, cls: string) {
 	return !!ele.className.match(new RegExp("(\\s|^)" + cls + "(\\s|$)"));
 }
 
@@ -13,7 +14,7 @@ export function hasClass(ele : HTMLElement, cls : string) {
  * @param {HTMLElement} ele
  * @param {string} cls
  */
-export function addClass(ele : HTMLElement, cls : string) {
+export function addClass(ele: HTMLElement, cls: string) {
 	if (!hasClass(ele, cls)) ele.className += " " + cls;
 }
 
@@ -22,7 +23,7 @@ export function addClass(ele : HTMLElement, cls : string) {
  * @param {HTMLElement} ele
  * @param {string} cls
  */
-export function removeClass(ele : HTMLElement, cls : string) {
+export function removeClass(ele: HTMLElement, cls: string) {
 	if (hasClass(ele, cls)) {
 		const reg = new RegExp("(\\s|^)" + cls + "(\\s|$)");
 		ele.className = ele.className.replace(reg, " ");
@@ -35,7 +36,7 @@ export function removeClass(ele : HTMLElement, cls : string) {
  * @param {string} path
  * @returns {Boolean}
  */
-export function isExternal(path : string) {
+export function isExternal(path: string) {
 	const isExternal = /^(https?:|http?:|mailto:|tel:)/.test(path);
 	return isExternal;
 }
@@ -46,7 +47,7 @@ export function isExternal(path : string) {
  * @param growthRate
  * @returns
  */
-export function formatGrowthRate(growthRate : number) {
+export function formatGrowthRate(growthRate: number) {
 	if (growthRate === 0) {
 		return "-";
 	}
@@ -62,7 +63,7 @@ export function formatGrowthRate(growthRate : number) {
  * @param {string} cFormat
  * @returns {string}
  */
-export function parseTime(time : string | number | Date | null, cFormat : string | undefined) {
+export function parseTime(time: string | number | Date | null, cFormat: string | undefined) {
 	if (arguments.length === 0) {
 		return null;
 	}
@@ -90,7 +91,7 @@ export function parseTime(time : string | number | Date | null, cFormat : string
 		s: date.getSeconds(),
 		a: date.getDay()
 	};
-	const time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key : keyof typeof formatObj) : string => {
+	const time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key: keyof typeof formatObj): string => {
 		let value = formatObj[key];
 		// Note: getDay() returns 0 on Sunday
 		if (key === "a") {
@@ -105,7 +106,7 @@ export function parseTime(time : string | number | Date | null, cFormat : string
 }
 
 // 下载文件
-export function downloadFile(obj : BlobPart, name : string, suffix : string, useUnix = true) {
+export function downloadFile(obj: BlobPart, name: string, suffix: string, useUnix = true) {
 	const url = window.URL.createObjectURL(new Blob([obj]));
 	const link = document.createElement("a");
 	link.style.display = "none";
@@ -133,9 +134,9 @@ export function isSyncStatus() {
 /**
  * 判断是否有某权限
  */
-export function hasPermission(params : any) {
+export function hasPermission(params: any) {
 	let $PermissionObj = JSON.parse(localStorage.getItem("permission") || '[]')
-	const obj = $PermissionObj.find((v : any) => v == params || v == params)
+	const obj = $PermissionObj.find((v: any) => v == params || v == params)
 	if (obj) {
 		return obj
 	}
@@ -232,4 +233,30 @@ export function convertTimeToDate(timeStr, options = {}) {
 
 	// 5. 按指定格式返回日期字符串
 	return dateObj.format(format);
-}
+}
+
+/**
+ * 乘法计算并格式化结果
+ * @param {string|number} num1 - 第一个乘数
+ * @param {string|number} num2 - 第二个乘数
+ * @returns {string} 保留两位小数的结果（不四舍五入，补零）
+ */
+export const multiplyAndFormat = (num1: any, num2: any = 1): string => {
+	try {
+		// 转换为BigNumber（使用字符串构造避免精度问题）
+		const bigNum1 = new BigNumber(num1.toString());
+		const bigNum2 = new BigNumber(num2.toString());
+
+		// 1. 乘法计算
+		const product = bigNum1.multipliedBy(bigNum2);
+
+		// 2. 截断到两位小数（不四舍五入）
+		const truncated = product.decimalPlaces(2, BigNumber.ROUND_DOWN);
+
+		// 3. 格式化保留两位小数（补零）
+		return truncated.toFixed(2);
+	} catch (error) {
+		console.error('计算错误:', error);
+		return '0.00'; // 出错时返回默认值
+	}
+};