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@atk
Forked from 140bytes/LICENSE.txt
Created June 29, 2011 13:46
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Date.parse polyfill (no timezone support)
// Polyfill for Date.parse
Date.parse = Date.parse || function(
a // ISO Date string
){
// turn into array, cutting the first character of the Month
a = a.split(/\W\D?/);
// create a new date object
return new Date(
// year
a[3],
// month (starting with zero)
// we got only the second and third character, so we find it in a string
// Jan => an => 0, Feb => eb => 1, ...
"anebarprayunulugepctovec".search(a[1]) / 2,
// day
a[2],
// hour
a[4],
// minute
a[5],
// second
a[6]
)
}
Date.parse=Date.parse||function(a){a=a.split(/\W\D?/);return new Date(a[3],"anebarprayunulugepctovec".search(a[1])/2,a[2],a[4],a[5],a[6])}
DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
Version 2, December 2004
Copyright (C) 2011 Alex Kloss <alexthkloss@web.de>
Everyone is permitted to copy and distribute verbatim or modified
copies of this license document, and changing it is allowed as long
as the name is changed.
DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. You just DO WHAT THE FUCK YOU WANT TO.
{
"name": "parsedate",
"description": "Date.parse replacement",
"keywords": [
"Date",
"parse"
]
}
<!DOCTYPE html>
<title>Foo</title>
<div>Expected value: <b>Thu Mar 22 2007 12:56:06...</b></div>
<div>Actual value: <b id="ret"></b></div>
<script>
var myFunction = Date.parse=Date.parse||function(a){a=a.split(/\W\D?/);return new Date(a[3],"anebarprayunulugepctovec".search(a[1])/2,a[2],a[4],a[5],a[6])}
document.getElementById( "ret" ).innerHTML = myFunction(''+new Date(2007,2,22,12,56,6));
</script>
@atk
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atk commented Jun 30, 2011

@jed: I just found out that new Date([string]) internally calls Date.parse - so if it was not available anyway, we could only use eval for call will not work on new Date, thus enlargening the function quite a bit. Anyway, I will try to get Timezone handling inside this later.

@subzey
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subzey commented Jul 1, 2011

Maybe this will help somehow for timezones:
var timezone = -7;
var d = new Date();
d.setUTCFullYear(2011, 6, 1) /* 1 Jul 2011 */
d.setUTCHours(1 + timezone, 0, 0) /* 01:00:00 UTC -7 hours */
console.log(d.toUTCString());
// Thu, 30 Jun 2011 18:00:00 GMT
Works well in IE6+, Fx, Op, node.js

@atk
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atk commented Jul 5, 2011

currently, I can cope for the given Date's timezone:

function(a){a=a.split(/[^\w-]\D?/);return new Date(a[3],"anebarprayunulugepctovec".search(a[1])/2,a[2],a[4]+(0|a[7].slice(2,5)),a[5],a[6])}

This doesn't take care of the local timezone, though - and I already got 139 bytes without the polyfill prefix.

@jdalton
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jdalton commented Aug 21, 2011

Date.parse has been around since ES1 making a fallback seems a bit out of place. Also the workings of ES5/5.1 Date.parse are a bit too complex to fit in 140bytes.

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