Add note about DOMHighResTimestamp precision

Closes #149
w3c · Feb 16, 2023 · 9f7d9a8 · 9f7d9a8
1 parent e7285a2
commit 9f7d9a8
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/index.html b/index.html
@@ -349,6 +349,11 @@ <h3>
         is 1000 milliseconds long (i.e., don't account for leap seconds).
         </li>
       </ol>
+      <p class="note">
+        A {{DOMHighResTimeStamp}} is a double. Therefore, using it to represent an
+        [=epoch-relative timestamp=], e.g. for the purpose of comparing it with <a>Date.now()</a>,
+        might lose sub-millisecond precision.
+        </p>
     </section>
     <section id="sec-domhighrestimestamp">
       <h3>