date-from-array.js
1.1 KB
export function createDate(y, m, d, h, M, s, ms) {
// can't just apply() to create a date:
// https://stackoverflow.com/q/181348
var date;
// the date constructor remaps years 0-99 to 1900-1999
if (y < 100 && y >= 0) {
// preserve leap years using a full 400 year cycle, then reset
date = new Date(y + 400, m, d, h, M, s, ms);
if (isFinite(date.getFullYear())) {
date.setFullYear(y);
}
} else {
date = new Date(y, m, d, h, M, s, ms);
}
return date;
}
export function createUTCDate(y) {
var date, args;
// the Date.UTC function remaps years 0-99 to 1900-1999
if (y < 100 && y >= 0) {
args = Array.prototype.slice.call(arguments);
// preserve leap years using a full 400 year cycle, then reset
args[0] = y + 400;
date = new Date(Date.UTC.apply(null, args));
if (isFinite(date.getUTCFullYear())) {
date.setUTCFullYear(y);
}
} else {
date = new Date(Date.UTC.apply(null, arguments));
}
return date;
}