| Index: PerformanceTests/CSS/ClassInvalidation.html
|
| diff --git a/PerformanceTests/CSS/ClassInvalidation.html b/PerformanceTests/CSS/ClassInvalidation.html
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..4dcb3487bc8d94e41f5b601f97cd6d701d41fabb
|
| --- /dev/null
|
| +++ b/PerformanceTests/CSS/ClassInvalidation.html
|
| @@ -0,0 +1,31 @@
|
| +<!DOCTYPE html>
|
| +<script src="../resources/runner.js"></script>
|
| +<style>
|
| +.a .b { background-color: green }
|
| +</style>
|
| +<div id="root"></div>
|
| +<script>
|
| +function appendDivChildren(root, childCount, levels) {
|
| + if (levels <= 0)
|
| + return;
|
| + for (var i = 0; i < childCount; i++) {
|
| + var div = document.createElement("div");
|
| + appendDivChildren(div, childCount, levels - 1)
|
| + root.appendChild(div);
|
| + }
|
| +}
|
| +
|
| +var root = document.getElementById("root");
|
| +appendDivChildren(root, 5, 5);
|
| +root.firstChild.className = "b";
|
| +document.body.offsetTop; // force style recalc.
|
| +
|
| +PerfTestRunner.measureRunsPerSecond({
|
| + description: "Measure the style recalc performance when changing a class affecting the style of a single descendant.",
|
| + run: function() {
|
| + root.className = "a";
|
| + root.offsetTop; // force recalc.
|
| + root.className = "";
|
| + root.offsetTop; // force recalc.
|
| + }});
|
| +</script>
|
|
|
Chromium Code Reviews
Issue 313963006:
Missing return after class invalidation short-cut. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk