zhaoyingbo
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64 lines
1.5 KiB
TypeScript
64 lines
1.5 KiB
TypeScript
/**
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* 计算百分比变化
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* @param {number} cur - 当前值。
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* @param {number} prev - 之前的值。
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* @returns {{ diff: number, percentage: string }} 包含差值和百分比变化的对象。
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*/
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export const calculatePercentageChange = (cur: number, prev: number) => {
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// 计算差值
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const diff = cur - prev
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if (diff === 0)
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return {
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diff,
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percentage: "0",
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}
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// 计算百分比
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const percentage = Math.abs((diff / prev) * 100).toFixed(1)
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return {
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diff,
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percentage,
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}
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}
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/**
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* 计算周同比
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* @param {string | number} cur - 当前值。
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* @param {string | number} prev - 之前的值。
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* @param {boolean} [needCN=true] - 是否需要中文描述。
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* @returns {{ text: string, diff: number, percentage: string }} 包含描述文本、差值和百分比变化的对象。
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*/
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export const calculateWeeklyRate = (
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cur: string | number,
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prev: string | number,
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needCN = true
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) => {
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const { diff, percentage } = calculatePercentageChange(
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Number(cur),
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Number(prev)
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)
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if (diff > 0)
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return {
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text: `<font color='red'>${
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needCN ? "较上周 " : ""
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}↑${percentage}%</font>`,
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diff,
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percentage,
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}
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if (diff < 0)
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return {
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text: `<font color='green'>${
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needCN ? "较上周 " : ""
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}↓${percentage}%</font>`,
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diff,
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percentage,
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}
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return {
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text: `<font color='gray'>${needCN ? "较上周 " : ""}0%</font>`,
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diff,
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percentage,
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}
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}
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