[英]how to get first date and last date from month and year in javascript
[英]How to get a year first date and last date in javascript
需要通过仅传递年份编号来获取一年的第一个日期和最后一个日期。 它几乎看起来像下面。
var year = 2016 //Any Year
var first_date = ? //From Year
var last_date = ? //From Year
var year = 2016 //Any Year var first_date = new Date(year, 0, 1); var last_date = new Date(year, 11, 31); document.write(first_date); document.write("<br/>"); document.write(last_date);
使用Date()
方法生成,或者使用有效的日期字符串
var year = 2016 //Any Year var first_date = new Date('1 January ' + 2016 + ' 00:00:00') //From Year var last_date = new Date('31 December ' + 2016 + ' 00:00:00') //From Year document.write(first_date + '<br>' + last_date)
或者作为参数像new Date(year, month[, day[, hour[, minutes[, seconds[, milliseconds]]]]]);
格式
var year = 2016 //Any Year var first_date = new Date(2016 ,0,1) //From Year var last_date = new Date(2016,11,31) //From Year document.write(first_date + '<br>' + last_date)
你想要这样吗?
var year = 2016 //Any Year
var first_date = new Date(year,0,1)
var last_date = new Date(year,11,31)
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