An example of timestamp operation and countdown function in JavaScript

This article mainly introduces "timestamp operation in JavaScript and examples of countdown function". In daily operation, I believe many people have doubts about timestamp operation in JavaScript and examples of countdown function. Xiaobian consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts of "timestamp operation and countdown function examples in JavaScript". Next, please follow the editor to study!

Several ways of taking timestamp

/ / the first kind of var timestamp = Date.now (); / / the second kind of var timestamp = new Date (). GetTime (); / / the third kind of var timestamp = new Date (). ValueOf (); / / the fourth kind, by calculating var timestamp = new Date () * 1; / / new Date ()-0, new Date () / 1Universe / fifth, by converting var timestamp = Date.parse (new Date ())

Operation of timestamp

Var timestamp1 = Date.now (); var timestamp2 = Date.now (); var timediff = (timestamp2-timestamp1) / 1000; / / milliseconds are obtained here, divided by 1000 to get seconds / days var days = parseInt (timediff / 3600 / 24); / / hour var hours = parseInt (timediff / 3600); / / minute var minutes = parseInt ((timediff / 60)% 60); / / second var seconds = parseInt (timediff% 60)

Countdown example

Function getDiff (T1, T2) {var timediff = (T2-T1) / 1000; / / days var days = parseInt (timediff / 3600 / 24); / / hour var hours = parseInt ((timediff / 3600)% 60); / / minute var minutes = parseInt ((timediff / 60)% 60); / / second var seconds = parseInt (timediff% 60); return days + "days" + hours + "hours" + minutes + "minutes" + seconds + "seconds" } var T1 = new Date ("8:03:15 on 2019-2-10"); var T2 = new Date ("7:05:55 on 2019-2-18"); var result = getDiff (T1, T2); console.log (result); / / 7 days 11:02:40 / / how many days to start the countdown to 2025 setInterval (() = > console.log (getDiff (new Date (), new Date ("2025-3-20")), 1000)) At this point, the study of "timestamp operation and implementation of countdown function examples in JavaScript" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!