newDate();newDate(value);newDate(dateString);newDate(year,monthIndex[,day[,hours[,minutes[,seconds[,milliseconds]]]); 1. 2. 3. 4. 注意, 创建一个新Date对象的唯一方法是通过 new 操作符,例如:let now = new Date(); 若将它作为常规函数调用(即不加 new 操作符),将返回一个字符串,而非 Da...
{day: 'numeric',month: 'short',year: 'numeric',});const localTimeString = localDate.toLocaleTimeString(undefined, {hour: '2-digit',minute: '2-digit',second: '2-digit',});
function isoDate(msSinceEpoch) { var d = new Date(msSinceEpoch); return d.getUTCFullYear() + '-' + (d.getUTCMonth() + 1) + '-' + d.getUTCDate() + 'T' + d.getUTCHours() + ':' + d.getUTCMinutes() + ':' + d.getUTCSeconds(); } 但这给了我: "2010-4-2T3:19" ...
// Date string method newDate("January 31 1980 12:30"); // Date and time method newDate(1776, 6, 4, 12, 30, 0, 0); 以上三个示例都创建了包含相同信息的日期。 你会注意到时间戳方法有一个负数;在新时代之前的任何日期都将被表示为一个负数。 在日期和时间方法中,我们的秒和毫秒设置为0。...
let now = new Date();let year = now.getFullYear();let month = now.getMonth() + 1; // getMonth returns a 0-based value, so we need to add 1 to get the actual month numberlet day = now.getDate();let second = now.getSeconds();let minute = now.getMinutes();let hour = now...
getTime returns the number of milliseconds elapsed, in your computer's timezone, since 1/1/1970 GMT. Because epoch is measured in seconds, you then want to divide the return value by 1000 to change milliseconds into seconds. Keep in mind that the JavaScript Date object will get it's ...
// Seconds since UNIX epoch (same as ECMAScript epoch) U: d => d.getTime() / 1000 | 0 };// Helpers // Return day name for date let getDayName = d => d.toLocaleString(P.lang, {weekday:'long'}); // Return month name for date ...
date-fns - Modern JavaScript date utility library. map-countdown - A browser countdown built on top of the Google Maps. dayjs - Day.js 2KB immutable date library alternative to Moment.js with the same modern API. luxon - Luxon is a library for working with dates and times in JavaScript...
JavaScript Date getTime() Method - In JavaScript, the Date.getTime() method will return a numeric value that represents the number of milliseconds between the date object and Epoch. The Epoch is the starting point for measuring time in seconds and is def
The JavaScript Date.valueOf() method returns a numeric value represents the number of milliseconds between the date object and Epoch. If the provided Date object is invalid, this method returns Not a Number (NaN) as result.The Epoch is the starting point for measuring time in seconds and is...