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fadziljusri/isDate.js

Created November 15, 2019 04:27
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Date format validation
Raw
isDate.js
String.prototype.isDate = function () {
// let format = /^((0?[1-9]|1[012])[- /.](0?[1-9]|[12][0-9]|3[01])[- /.](19|20)?[0-9]{2})*$/; // MM/DD/YYYY
let format = /([12]\d{3}-(0[1-9]|1[0-2])-(0[1-9]|[12]\d|3[01]))/; // YYYY-MM-DD
return (format.test(this))
? new Date(this).toISOString() === this
: false
}
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