BTW, if you wanted to date manipulations without JS, with the help of Mat
and others, we came up with these below. The
problem with the date filters in TW, is that they don't form a complete kit
of the things you would want to do with dates.
\define g(y,m,d,offset:"0")
<$set name=m value={{{ [<__m__>add[9]remainder[12]] }}}>
<$set name=y value={{{ [<m>divide[10]floor[]negate[]add<__y__>] }}} >
<$set name=y4 value={{{ [<y>divide[4]floor[]] }}}>
<$set name=y100 value={{{ [<y>divide[100]floor[]] }}}>
<$set name=y400 value={{{ [<y>divide[400]floor[]] }}}>
<$set name=m306 value={{{ [<m>multiply[306]add[5]divide[10]floor[]] }}}>
<$set name=result value={{{ [[365]multiply<y>add<y4>subtract<y100>add<y400>
add<m306>add[$d$]add[$offset$]subtract[1]] }}} >
<<result>>
</$set></$set></$set></$set></$set></$set></$set>
\end
\define d(g)
<$set name=daysperyear value="365.2425">
<!-- y = (10000*g + 14780)/3652425 -->
<$set name=y value={{{ [[10000]multiply<__g__>add[14780]divide[3652425]floor
[]] }}}>
<!-- ddd = g - (365*y + y/4 - y/100 + y/400) -->
<$set name=y4 value={{{ [<y>divide[4]floor[]] }}}>
<$set name=y100 value={{{ [<y>divide[100]floor[]] }}}>
<$set name=y400 value={{{ [<y>divide[400]floor[]] }}}>
<$set name=dddtest value={{{ [[365]multiply<y>add<y4>subtract<y100>add<y400>
negate[]add<__g__>] }}} >
<$set name=prioryear value={{{ [<y>subtract[1]] }}} >
<$set name=y value={{{ [<dddtest>prefix[-]then<prioryear>] [<dddtest>!prefix
[-]then<y>] }}} >
<$set name=ddd value={{{ [[365]multiply<y>add<y4>subtract<y100>add<y400>
negate[]add<__g__>] }}} >
<!-- mi = (100*ddd + 52)/3060 -->
<$set name=mi value={{{ [[100]multiply<ddd>add[52]divide[3060]floor[]] }}} >
<!-- mm = (mi + 2)%12 + 1 -->
<$set name=mm value={{{ [<mi>add[2]remainder[12]add[1]] }}} >
<!-- y = y + (mi + 2)/12 -->
<$set name=y value={{{ [<mi>add[2]divide[12]floor[]add<y>] }}} >
<!-- dd= ddd - (mi*306 + 5)/10 + 1 -->
<$set name=dd value={{{ [<mi>multiply[306]add[5]divide[10]floor[]negate[]add
<ddd>add[1]] }}} >
<<y>>, <<mm>>, <<dd>> <br/>
</$set></$set></$set></$set></$set></$set></$set></$set></$set></$set></$set
></$set></$set>
\end
\define daysfrom(y,m,d,o)
<$wikify name=future text="<<g $y$ $m$ $d$ $o$>>">
<$macrocall $name="d" g=<<future>>/>
</$wikify>
\end
Days from: <<daysfrom 2019 10 21 11>>
On Wednesday, November 27, 2019 at 11:27:38 AM UTC-8, Dave wrote:
>
> okay, so I managed to get this javascript running:
> function daydiff() {
> var date1 = new Date("7/13/2010");
> var date2 = new Date("12/15/2010");
> var timeDiff = Math.abs(date2.getTime() - date1.getTime());
> var diffDays = Math.ceil(timeDiff / (1000 * 3600 * 24));
> return diffDays
> }
> console.log(daydiff())
>
> I put that in a myscript.js, and at the terminal ran "node myscript.js"
> and it spit out "156" on the next line.
>
> How would that translate into TW5?
>
>
>
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