CSS编写的网页打开流畅相关知识与注意点
作者 佚名技术
来源 CSS技术
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发布时间 2012-03-05
| bsp;selector is banned in UI CSS without the explicit approval of your skin''s module owner. BAD - treehead treerow treecell { } BETTER, BUT STILL BAD (see next guideline) - treehead > treerow > treecell { } 3.6、Tag-categorized rules should never contain a child selector! Avoid using the child selector with tag-categorized rules. You will dramatically increase the matching time (especially if the rule is likely to be matched more often than not) for all occurrences of that element. BAD - treehead > treerow > treecell { } BEST - .treecell-header { } 3.7、Question all usages of the child selector! Be careful about using the child selector. If you can come up with a way to avoid having to use it, do so. In particular, the child selector is frequently used with RDF trees and menus like so. BAD - treeitem[IsImapServer="true"] > treerow > .tree-folderpane-icon { } Remember that attributes from RDF can be duplicated in a template! Take advantage of this fact to duplicate RDF properties on child XUL elements that wish to change based off that attr |
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