With this HTML file, I checked `Date.now()`, `"".toLowerCase()`, as well as `[].includes()` (to measure impact of bug 1776721 as well). The results are: `[].includes()`: 17% improvement `Date.now()`: 1% regression `"".toLowerCase()`: 1% regression
Bug 1749521 Comment 24 Edit History
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With this HTML file, I checked `Date.now()`, `"".toLowerCase()`, as well as `[].includes()` which had a label frame already, to measure impact of bug 1776721 as well. The results are: `[].includes()`: 17% improvement `Date.now()`: 1% regression `"".toLowerCase()`: 1% regression