TypeScript:
比较两个日期

// Initialize two dates
const date1 = new Date('2023-03-17');
const date2 = new Date('2023-04-15');

// Compare dates
const isBefore = date1 < date2;
const isAfter = date1 > date2;
const areEqual = date1.getTime() === date2.getTime(); // Use getTime for equality

console.log('Date1 is before Date2:', isBefore); // 输出: Date1 is before Date2: true
console.log('Date1 is after Date2:', isAfter); // 输出: Date1 is after Date2: false
console.log('Dates are equal:', areEqual); // 输出: Dates are equal: false