What is the Minimum Millisecond Value for setTimeout() Across Browsers?

Determining Minimum Millisecond Value for setTimeout() in Modern and Legacy Browsers

Background:

The setTimeout() function allows you to schedule the execution of a callback function after a specified delay in milliseconds. It's a commonly used method for handling deferred tasks in JavaScript.

Question:

What is the minimum millisecond value that can be specified in the setTimeout() function to ensure compatibility across modern and legacy browsers?

Answer:

Modern Browsers (HTML5):

For modern browsers that adhere to the HTML5 specification, the minimum timeout value is 4 milliseconds (ms). This value is consistent across browsers released in 2010 and onward, including Chrome, Firefox, Safari, and Edge.

Legacy Browsers:

Prior to HTML5, the minimum timeout value was browser-dependent. For example, inFirefox, Thunderbird, and SeaMonkey versions prior to 5.0, the minimum timeout value was 10 ms.

Recommendation:

To ensure cross-browser compatibility, it is recommended to use a minimum timeout value of 10 ms. This value has been widely used in JavaScript code and is supported by both modern and legacy browsers.

Note:

It's important to understand that setting the minimum timeout value too low can potentially lead to performance issues, such as increased CPU usage and reduced responsiveness. Therefore, it's always advisable to use the lowest timeout value that meets your application's requirements.

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