Should You Use `visibility:hidden` or `display:none` to Hide Elements for Better Performance?

Exploring Performance Implications of CSS Visibility vs. Display:None for Hidden Elements

In pursuit of streamlining web applications, many developers seek ways to optimize element behavior. One area under consideration is the approach to hiding elements. Previously, using display:none; opacity:0;, elements were concealed and removed from document flow. However, a proposed alternative is to utilize visibility:hidden to hide elements while retaining their space occupation.

Impact of Visibility:hidden

By using visibility:hidden, elements become invisible but remain part of the document tree. This means they continue to affect layout and require recalculation upon display. Consequently, if numerous hidden elements are present, this recalculation process can potentially impact browser performance.

Performance Implications

In contrast to visibility:hidden, elements set to display:none are entirely removed from the render tree. They do not contribute to layout calculations or require repainting, resulting in a more efficient rendering process. Hence, display:none generally exhibits superior performance when hiding elements.

Recommendation

The choice between visibility:hidden and display:none depends on the functionality required. If element functionality necessitates opacity or visibility manipulation, visibility:hidden is appropriate. However, if these characteristics are not necessary, display:none provides optimal performance by eliminating unnecessary layout calculations and repaint operations.

By understanding the implications of each approach, developers can make informed decisions that balance functionality and performance in their web applications.

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