Parameters: This method accepts a single parameter:
- datestring: This parameter holds the date as a string.
Return Values: It returns an integer value representing the number of a millisecond between midnight January 1, 1970, and the date provided. If by any means, the machine can’t recognize the string or the input string is invalid, it will return “NaN” instead of an integer.
Example 2: If the input string of date is not correct, it returns NaN i.e, not a number.
Example 3: If the input string of the date is correct, it returns the difference between the date provided and January 1, 1970.
Note: Once we get the millisecond count between two dates, we can easily find the number of hours, days, months, years, etc by simple maths calculation.
- Google Chrome 1 and above
- Internet Explorer 3 and above
- Mozilla Firefox 1 and above
- Opera 3 and above
- Safari 1 and above
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