JS Practice — Built-in Objects

Date.UTC() — returns a number

📖 Usage Example

Date.UTC(2024, 0, 15)  // → 1705276800000
// month is 0-indexed
new Date(Date.UTC(2024, 0, 15)).toISOString()  // → '2024-01-15T00:00:00.000Z'

Use Date.UTC() to compute the millisecond timestamp for a UTC date without constructing a Date object first.

Date.UTC()

Like Date.now() and Date.parse(), Date.UTC() returns a plain number.

Challenge: Verify that typeof Date.UTC(2024, 0, 15) returns 'number'.

💡 Hints (1)