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Date.now() function in JavaScript
The Date object is a data type built into the JavaScript language. Date objects are created with the new Date( ) as shown below.
Once a Date object is created, a number of methods allow you to operate on it. Most methods simply allow you to get and set the year, month, day, hour, minute, second, and millisecond fields of the object, using either local time or UTC (universal, or GMT) time.
The now() function of the Date object returns the number of milliseconds since 1st Jan 1970.
Syntax
Its syntax is as follows
Date.now();
Example
<html>
<head>
<title>JavaScript Example</title>
</head>
<body>
<script type="text/javascript">
var currentDate = Date.now();
var birthDate = Date.parse('29 sep 1989 00:4:00 GMT');
document.write(currentDate);
document.write(", "+birthDate+", ");
document.write(currentDate - birthDate);
</script>
</body>
</html>Output
1537780591654, 623030640000, 914749951654
Example
You can get the current date using this function but, since it returns the nu8mber of milliseconds from 1st Jan 1970 to get the formatted date pass the value obtained to the Date constructor.
<html>
<head>
<title>JavaScript Example</title>
</head>
<body>
<script type="text/javascript">
var currentDate = Date.now();
document.write(currentDate);
document.write("<br>");
document.write(Date(currentDate).toString());
</script>
</body>
</html>Output
1539758885099 Wed Oct 17 2018 12:18:05 GMT+0530 (India Standard Time)
Updated on: 25-Jun-2020
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