Does Omitting the Last Semicolon in CSS Affect Performance or Browser Functionality?

Does Leaving Out the Last Semicolon of a CSS Block Affect Performance or Browser Functionality?

The practice of omitting the final semicolon in a CSS block has been a topic of debate for some time. Let's explore the implications of this technique.

Is It Good Practice?

Leaving out the last semicolon is not considered good practice. It can lead to confusion and potential errors, particularly when multiple developers work on the same style sheet.

Will It Improve Load Times on a Large Scale?

While it is true that each omitted semicolon saves a few bytes, the impact on load times is negligible. CSS compressors, such as the YUI Compressor, can automate the removal of unnecessary semicolons, providing a more efficient approach to optimizing CSS performance.

Can It Cause Browser Issues?

No, it won't cause browsers to "break." Browsers accurately implement the CSS2 specification, which states that declarations can be separated by semicolons but need not be terminated by them.

Does the Same Hold True for JavaScript?

JavaScript has different syntax and a distinct specification. Omitting the final semicolon in JavaScript can lead to unexpected behavior and errors.

The above is the detailed content of Does Omitting the Last Semicolon in CSS Affect Performance or Browser Functionality?. For more information, please follow other related articles on the PHP Chinese website!