我们需要编写一个 JavaScript 函数,它接受一个数字 num,它代表秒数作为第一个也是唯一的参数。
然后我们的函数应该构造并返回一个字符串,其中包含这些秒中包含的年、日、小时和分钟的信息,显然如果包含的话。
对于这个问题,我们认为所有年份都有 365 天
例如,如果函数的输入是 -
const num = 5454776657;
那么输出应该是 -
const output = '172 years, 353 days, 23 hours, 44 minutes and 17 seconds';
以下是代码 -
const findTime = (num) => { if(num < 1){ return '0' }; const qualifier = num => (num > 1 ? 's' : '') const numToStr = (num, unit) => num > 0 ? ` ${num} ${unit}${qualifier(num)}` : '' const oneMinute = 60; const oneHour = oneMinute * 60; const oneDay = oneHour * 24; const oneYear = oneDay * 365; const times = { year: ~~(num / oneYear), day: ~~((num % oneYear) / oneDay), hour: ~~((num % oneDay) / oneHour), minute: ~~((num % oneHour) / oneMinute), second: num % oneMinute, }; let str = ''; for (let [key, value] of Object.entries(times)) { str += numToStr(times[key], key) } const arr = str.trim().split(' ') const res = [] arr.forEach((x, i) => { if (i % 2 === 0 && i !== 0) res.push(i ===arr.length- 2 ? 'and' : ',') res.push(x) }) return res.join(' ').replace(/\s,/g, ',') } console.log(findTime(5454776657));输出结果
以下是控制台输出 -
172 years, 353 days, 23 hours, 44 minutes and 17 seconds