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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Optimize style recalc after class attribute change"
href="https://bugs.webkit.org/show_bug.cgi?id=154075">154075</a>
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<th>Summary</th>
<td>Optimize style recalc after class attribute change
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>Product</th>
<td>WebKit
</td>
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<th>Version</th>
<td>WebKit Nightly Build
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<th>Hardware</th>
<td>Unspecified
</td>
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<th>OS</th>
<td>Unspecified
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>Normal
</td>
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<th>Priority</th>
<td>P2
</td>
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<th>Component</th>
<td>CSS
</td>
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>koivisto@iki.fi
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<p>
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<pre>Currently a class attribute change invalidates style for the entire element subtree for any class found in the active stylesheet set. We should determine exactly which descendants are affected and invalidate just those.</pre>
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