Does Javascript/EcmaScript3 support ISO8601 date parsing?
How are you currently parsing ISO8601 dates e.g. 2010-02-23T23:04:48Z in JavaScript?
Some browsers return NaN (including Chrome) when using the code below, FF3.6+ works though.
<html>
<body>
<script type="text/javascript">
var d = Date.parse("2010-02-23T23:04:48Z");
document.write(d);
</script>
</body>
</html>
You can try this here http://www.w3schools.com/jsref/tryit.asp开发者_StackOverflow中文版?filename=tryjsref_parse
This is an excellent implementation which covers edge cases and falls back to native implementation. https://github.com/csnover/js-iso8601/
Try this: http://anentropic.wordpress.com/2009/06/25/javascript-iso8601-parser-and-pretty-dates/
As others have mentioned, it's not in the 3rd edition specification. It is in the 5th edition specification however, and I quote:
ECMAScript defines a string interchange format for date-times based upon a simplification of the ISO 8601 Extended Format. The format is as follows: YYYY-MM-DDTHH:mm:ss.sssZ
So it should be trickling into browsers soon (IE9, Chrome 1, Firefox 4 are at least some of the browsers supporting ISO 8601 dates). If you want to implement a solution in the meantime, you might want to optimize so that your script can take advantage of the native if available:
(function ()
{
if (isNaN(Date.parse("2010-02-23T23:04:48Z")))
{
var oldParse = Date.parse;
Date.parse = function (strTime)
{
// regex test strTime for ISO 8601, use oldParse if it isn't
// Use custom parser if it is.
}
}
})();
On the question in the title: Not natively (as you've tested :) )
In ECMA-262 (3/e) the only requirement for Date.parse[15.9.4.2] is the round-trip conversion via .toString() and .toUTCString() won't change the Date object, i.e.
Date.parse(x.toString()) == Date.parse(x.toUTCString()) == x
and both .toString()[15.9.5.2] and .toUTCString()[15.9.5.42] are implementation-dependent, so what format Date.parse can parse is totally unspecified.
加载中,请稍侯......
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