R524809
49 lines
1.4 KiB
TypeScript
49 lines
1.4 KiB
TypeScript
/**
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* 展示层格式化（无 i18n 框架依赖，供 UI / Canvas 文案使用）
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*/
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/** 适龄文案，如 3-5岁 */
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export function formatAgeRangeLabel(minAge: number, maxAge: number): string {
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return `${minAge}-${maxAge}岁`;
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}
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/** 比较符号（全角，与现有比大小题型一致） */
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export function formatCompareSymbol(
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relation: 'gt' | 'lt' | 'eq',
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): '＞' | '＜' | '＝' {
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switch (relation) {
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case 'gt':
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return '＞';
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case 'lt':
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return '＜';
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default:
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return '＝';
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}
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}
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/** 数字左侧补零，如 padLeadingZero(3, 2) => "03" */
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export function padLeadingZero(num: number, width: number): string {
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const s = String(Math.trunc(Math.abs(num)));
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if (s.length >= width) return num < 0 ? `-${s}` : s;
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const pad = '0'.repeat(width - s.length);
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return num < 0 ? `-${pad}${s}` : `${pad}${s}`;
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}
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/** 截断过长字符串 */
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export function truncateText(
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text: string,
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maxChars: number,
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ellipsis = '…',
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): string {
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if (text.length <= maxChars) return text;
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const cut = Math.max(0, maxChars - ellipsis.length);
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return text.slice(0, cut) + ellipsis;
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}
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/** 非负整数千分位（中文场景常用逗号或空格，此处用半角逗号） */
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export function formatThousands(n: number): string {
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const i = Math.trunc(n);
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if (i < 0) return `-${formatThousands(-i)}`;
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return String(i).replace(/\B(?=(\d{3})+(?!\d))/g, ',');
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}
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