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[periodic time]
function getPeriod(period) {
var number, letter, letters, time;
if (typeof period !== "string") {
throw new Error("sorry, only string is correct, not " + typeof period);
}
/**
* Parse number from period.
* @type {number}
*/
number = parseInt(period, 10);
/**
* Parse letters from period.
* @type {Array}
*/
letters = period.match(/[a-z]/mig);
if (letters === null) {
throw new Error("give me some letters in \"" + period + "\"");
}
/**
* Cast *Array* to lower case *string*.
* @type {string}
*/
letter = letters.join("").toLowerCase();
/**
* Start build time from number.
* @type {number}
*/
time = number;
/**
* Transform time to concrete period.
*/
switch (letter) {
case "ms": break;
case "s": time *= 1000; break;
case "m": time *= 1000 * 60; break;
case "h": time *= 1000 * 60 * 60; break;
case "d": time *= 1000 * 60 * 60 * 24; break;
case "o": time *= 1000 * 60 * 60 * 24 * 30; break; // month is 30 days
case "y": time *= 1000 * 60 * 60 * 24 * 365; break; // year is 365 days
}
return time;
};
/**
* TEST DATA
*/
["10ms", "3s", "5m", "1h", "7d", "1o", "3y"].forEach(function (period) {
console.log(getPeriod(period));
});
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