How to Get Milliseconds in JavaScript?
JavaScript provides various methods to precisely measure time down to the millisecond, including Date.now(), performance.now(), and the Date object’s getTime() method. These tools enable developers to effectively manage time in their programming tasks.
These are the following methods to get milliseconds in JavaScript:
Table of Content
- Date Object
- Using Performance API
- Using `Date.now ( )`
Date Object
In JavaScript, you can easily get the milliseconds by creating a new Date object and using its getMilliseconds() method, which generates the milliseconds part of the current time. This straightforward approach makes accessing time information for developers easier.
Example: To illustrate a new Date object using getMilliseconds() method.
<!DOCTYPE html>
<html>
<head>
<title>Javascript Milliseconds example</title>
</head>
<body>
<script>
const now = new Date();
const milliseconds = now.getMilliseconds();
document.write("Milliseconds: " + milliseconds);
</script>
</body>
</html>
Output:
output
Using Performance API
The Performance API gives an accurate way to measure time. Its now() method tells the current time very precisely, useful for checking performance or comparing speeds.
Example: To demonstrate how to use JavaScript’s Performance API to obtain the current time in milliseconds.
<!DOCTYPE html>
<html>
<head>
<title>Performance milliseconds example </title>
</head>
<body>
<script>
const milliseconds = performance.now();
document.write("Milliseconds: " + milliseconds);
</script>
</body>
</html>
Output:
performance API to obtain current time in milliseconds
Using`Date.now ( )`
You can quickly get the current time in milliseconds using the Date class’s now() method. It’s a direct way to get accurate time information whenever you require it.
Example: To illustrate how to utilize JavaScript’s Date.now() method to retrieve the current time in milliseconds.
<!DOCTYPE html>
<html>
<head>
<title>Date milliseconds example </title>
</head>
<body>
<script>
const milliseconds = Date.now();
document.write("Milliseconds: " + milliseconds);
</script>
</body>
</html>
Output:
using Date.now() method to retrieve current time in milliseconds
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