28 lines
1.1 KiB
JavaScript
28 lines
1.1 KiB
JavaScript
import toInteger from "../_lib/toInteger/index.js";
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import toDate from "../toDate/index.js";
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import requiredArgs from "../_lib/requiredArgs/index.js";
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/**
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* @name addMilliseconds
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* @category Millisecond Helpers
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* @summary Add the specified number of milliseconds to the given date.
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*
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* @description
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* Add the specified number of milliseconds to the given date.
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*
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* @param {Date|Number} date - the date to be changed
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* @param {Number} amount - the amount of milliseconds to be added. Positive decimals will be rounded using `Math.floor`, decimals less than zero will be rounded using `Math.ceil`.
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* @returns {Date} the new date with the milliseconds added
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* @throws {TypeError} 2 arguments required
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*
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* @example
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* // Add 750 milliseconds to 10 July 2014 12:45:30.000:
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* const result = addMilliseconds(new Date(2014, 6, 10, 12, 45, 30, 0), 750)
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* //=> Thu Jul 10 2014 12:45:30.750
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*/
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export default function addMilliseconds(dirtyDate, dirtyAmount) {
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requiredArgs(2, arguments);
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var timestamp = toDate(dirtyDate).getTime();
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var amount = toInteger(dirtyAmount);
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return new Date(timestamp + amount);
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} |