36 lines
996 B
JavaScript
36 lines
996 B
JavaScript
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/**
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* Test whether a Date instance is valid.
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* A valid date returns a number for its timestamp, and NaN otherwise.
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* NaN is never equal to itself.
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* @returns {boolean}
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*/
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export function isValid() {
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return this.getTime() === this.getTime();
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}
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/**
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* Return a standard YYYY-MM-DD string for the Date instance.
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* @returns {string} The date in YYYY-MM-DD format
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*/
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export function toDateInputString() {
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const yyyy = this.getFullYear();
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const mm = (this.getMonth() + 1).paddedString(2);
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const dd = this.getDate().paddedString(2);
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return `${yyyy}-${mm}-${dd}`;
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}
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/**
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* Return a standard H:M:S.Z string for the Date instance.
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* @returns {string} The time in H:M:S format
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*/
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export function toTimeInputString() {
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return this.toTimeString().split(" ")[0];
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}
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// Define primitives on the Date prototype
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Object.defineProperties(Date.prototype, {
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isValid: {value: isValid},
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toDateInputString: {value: toDateInputString},
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toTimeInputString: {value: toTimeInputString}
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});
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