js计算某个时间距离现在有几年几月几日几分几秒之前的方法

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数据类型

使用js时间戳
console.log(Date.now()) //1642471441587
或者转化为时间戳才能使用
Date.parse(“2022/1/18 10:05”) //1642471500000
将时间戳转化成时间格式的方法如下–链接查看
https://mp.weixin.qq.com/s?__biz=MjM5MDA2MTI1MA==&mid=2649121025&idx=2&sn=aff0bf6598f07e6b93f20134b1cfac89&chksm=be5846ac892fcfba7a9c382850cf8783d54d4fe8498843b14957d2bba79fdf39f6cd640c66f5&scene=27

代码

时间戳与正常时间了解了之后就上代码


function get_time_diff(time) {var diff = '';var time_diff = new Date().getTime() - time;// 计算相差年数var years = Math.floor(time_diff / (365 * 24 * 3600 * 1000));if (years > 0) {diff += years + '年';} else {// 计算相差月数var months = Math.floor(time_diff / (30 * 24 * 3600 * 1000));if (months > 0) {diff += months + '月';} else {// 计算相差天数 var days = Math.floor(time_diff / (24 * 3600 * 1000));if (days > 0) {diff += days + '天';} else {// 计算相差小时数 var leave1 = time_diff % (24 * 3600 * 1000);var hours = Math.floor(leave1 / (3600 * 1000));if (hours > 0) {diff += hours + '小时';} else {// 计算相差分钟数 var leave2 = leave1 % (3600 * 1000);var minutes = Math.floor(leave2 / (60 * 1000));if (minutes > 0) {diff += minutes + '分';} else {// 计算相差秒数 var leave3 = leave2 % (60 * 1000);var seconds = Math.round(leave3 / 1000);if (seconds > 0) {diff += seconds + '秒';}}}}}}return diff;
}

其实这个也是抄的我改了改改成如果一天前就不显示时分秒这种的了
礼貌贴原文链接
https://juejin.cn/post/6844903704810749965

测试代码

const now = new Date().getTime();// Test cases
const result1 = get_time_diff(now - 2 * 24 * 3600 * 1000);
const result2 = get_time_diff(now - 2 * 3600 * 1000);
const result3 = get_time_diff(now - 2 * 60 * 1000);
const result4 = get_time_diff(now - 2 * 1000);// Assertion
assert.strictEqual(result1, '2天');
assert.strictEqual(result2, '2小时');
assert.strictEqual(result3, '2分');
assert.strictEqual(result4, '2秒');