41 lines
878 B
JavaScript
41 lines
878 B
JavaScript
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"use strict";
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exports.isDate = isDate; /**
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* @name isDate
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* @category Common Helpers
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* @summary Is the given value a date?
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*
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* @description
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* Returns true if the given value is an instance of Date. The function works for dates transferred across iframes.
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*
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* @param value - The value to check
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*
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* @returns True if the given value is a date
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*
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* @example
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* // For a valid date:
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* const result = isDate(new Date())
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* //=> true
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*
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* @example
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* // For an invalid date:
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* const result = isDate(new Date(NaN))
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* //=> true
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*
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* @example
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* // For some value:
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* const result = isDate('2014-02-31')
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* //=> false
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*
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* @example
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* // For an object:
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* const result = isDate({})
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* //=> false
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*/
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function isDate(value) {
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return (
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value instanceof Date ||
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(typeof value === "object" &&
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Object.prototype.toString.call(value) === "[object Date]")
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);
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}
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