2/28/2024 0 Comments Ui toolkit meaningElement names are appended to the block name using two underscores. Element name: a part of a block that has no standalone meaning and is semantically tied to its block.Block name: a block is a meaningful, standalone entity or control.With BEM, you assign classes to elements and then use these classes as the selectors in style sheets. BEM is a simple system that helps you write structured, non-ambiguous, easy to maintain selectors. About BEMīEM stands for Block Element Modifier. With BEM, each element receives a class that combines its specific existence inside another element. You can use the Block Element Modifier(BEM) convention to reduce hierarchical selectors. Mouse movements invalidate the entire hierarchy of elements targeted by an :hover selector. Avoid using :hover pseudo-class in selectors on elements with many descendants, such as.The universal selector tests every potential element against the selector which can impact performance. Avoid using universal selector at the end of complex selectors ( selector1 > selector2 > *) or the combination of descendant selector with the universal selector ( selector1 * selector2).If you want to have partial match, use the child selector ( selector1 > selector2 > selector3) instead of the descendant selector ( selector1 selector2 selector3).Complex selectors depend on the ancestors of an element to match it. In general, complex selectors have more impact on performance than simple selectors. If an element matches a lot of selectors, it causes overhead to merge the styles coming from each rule. More info See in Glossary but is significant for large UIs that have several thousands of elements. Unity currently supports three UI systems. Update Styling might be negligible for simple UIs (User Interface) Allows a user to interact with your application. The number of elements in the hierarchy is the main fact that affects performance.
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