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This article introduces the knowledge of "how to use Date objects". Many people will encounter this dilemma in the operation of actual cases, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

How do I use the Date object?

First, you need to get the Date object.

Get WeChat.

Var d=new Date ()

When the date object is generated, the current time is returned by default without passing any parameters

Var d=new Date ('2015Uniqqq2')

In the case of passing in parameters, what is obtained is the passed time

Note: this parameter is a string.

Some methods:

1.d.getFullYear () gets the current year. | d.setFullYear (2012) returns the number of milliseconds from January 1, 1970 to the set time |

2.d.getMonth () gets the current month (Note: a small BUG, the current month starts at 0) | | d.setMonth (9) returns the number of milliseconds of the set month from January 1, 1970 to the current year.

3.d.getDate () gets the current date | | d.setDate () same as above

4. When getHours () is obtained

GetMinutes () get minutes

GetSeconds () get seconds

The time acquired by each machine varies because the method returns the local time; it is not international standard time

5. Modification of date

Date.parse ("2015-08-24"); get the number of milliseconds from 1970 to the set time

D.getTime (); gets the milliseconds from 1970 to the current time

D.setTime ()

New Date (time)

Create a date object and specify the number of milliseconds at a specified time

Or modify the time property, var d = new Date (); d.setTime (56521211021)

Case study:

1. Format the date

Document

Function geshihua () {

Var d = new Date ()

Var year = d.getFullYear ()

Var Month = d.getMonth () + 1

Var day = d.getDate ()

Var str = 'current time is:' + year + 'year' + Month + 'month' + day + 'day'

[xss_clean] (str)

}

Geshihua ()

Get the number of days in a month:

Document

Function days (year, month) {

Var str = year +'/'+ month +'/ 1'

Var d = new Date (str)

Var Month = d.getMonth ()

Var MonthMin = d.setMonth (Month)

Var MonthMin2 = d.setMonth (Month + 1)

Var MonthDay = MonthMin2-MonthMin

Alert (MonthDay / 24 / 60 / 60 / 1000)

}

Days ('2014 December,' 2')

. Calculate the date difference

Document

.btn {

Background:none

Border: 1px solid # b6b6b6

Display: block

Height: 40px

Margin: 40px auto

}

| | |

Function jisuanriqi () {

Var oDiv = document.getElementById ('div1')

Var aInput = oDiv.getElementsByTagName ('input')

Var qishiArr = []

Var zhongzhiArr = []

For (var I = 0; I < aInput.length; iTunes +) {

If (I < 3) {

QishiArr [I] = aInput [I] .value

} else {

ZhongzhiArr [I] = aInput [I] .value

}

}

Var str1 = qishiArr.join ('/')

Var str2 = zhongzhiArr.join ('/')

Var D1 = new Date (str1)

Var D2 = new Date (str2)

Alert (D1 + ":" + D2)

Var days = Math.abs (d1.getTime ()-d2.getTime ()) / 1000 / 24 / 60 / 60

Alert (days)

}

That's all for "how to use the Date object". Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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