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Today, I would like to share with you how to use javascript to do a countdown to a certain time, the content is detailed, the logic is clear, I believe most people still know too much about this knowledge, so share this article for your reference, I hope you can get something after reading this article, let's take a look at it.

Document

/ / time today

Window.setInterval (function () {

Var nowDate = new Date ()

/ / Monday time

Var tomorrowDate = new Date ("2021-12-22 08:00:00")

Var secStr = nowDate.getTime ()

Var secStr = tomorrowDate.getTime ()

Var sss = tomorrowDate-nowDate

Var sec = Math.floor (sss / 1000% 60)

Var min = Math.floor (sss / 1000 / 60% 60)

Var hour = Math.floor (sss / 1000 / 60 / 60% 24)

Var day = Math.floor (sss / 1000 / 60 / 60 / 24% 24)

Var yue = Math.floor (sss/1000/60/60/24)

Sec = sec < 10? "0" + sec: sec

Min = min < 10? "0" + min: min

Hour = hour < 10? "0" + hour: hour

Day = day < 10? "0" + day: day

/ / [xss_clean] (day)

/ / [xss_clean] (hour)

/ / [xss_clean] (min)

/ / [xss_clean] (sec)

Var shijian = "still away from class" + day + "days" + hour + "hours" + min + "minutes" + sec + "seconds"

Document.body [XSS _ clean] = shijian

/ / [xss_clean] (shijian)

})

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