根据当前月份动态选择日期 - 选择列表

Question

I am trying to create, rather than using datepicker, an options list of the 1st days of the month (ie previous months 5, next months 2)

Given now is APRIL, this would be 01/04/2019 (dd/mm/yy) So the option list would span, December 2018, up till June 2019, of each 1st of the month. Example would be as below, and then using a for loop to display the options

var previous = mktime(0, , 0, date("m")-5  , date("d"), date("Y"));
var current = mktime(0, 0, 0, date("m")  , date("d"), date("Y"));
var next = mktime(0, 0, 0, date("m")+2  , date("d"), date("Y"));

Hope is it not to vague of a question, thank you for the help

Answer 1

It is straightforward in PHP using relative formats .

An example is:

$timenow = strtotime('first day of',time());

echo "\n";
for ($i = -5; $i < 3; $i ++) {
    $new = strtotime("$i month",$timenow);
    echo $new ," <-- ",strftime('%Y-%m-%d ',$new),"\n";
}

This uses 'first day of'

'first day of'
Sets the day of the first of the current month. This phrase is best used together with a month name following it.
"first day of January 2008"

And ' number space unit'

number space? (unit | 'week')
Handles relative time items where the value is a number.
"+5 weeks", "12 day", "-7 weekdays"

If you want to do it in javascript, suggest internet search for "js relative date".