复制
1function getFine(speed, amount) {
2  const formattedSpeed = new Intl.NumberFormat('en-US', {
3    style: 'unit', unit: 'mile-per-hour'
4  }).format(speed)
5
6  const formattedAmount = new Intl.NumberFormat('en-US', {
7    style: 'currency', currency: 'USD'
8  }).format(amount)
9
10  return `The driver drove ${formattedSpeed} and has to pay ${formattedAmount}`
11}
12
13console.log(getFine(130, 300))