From d1ccb7e47f5bc6d569e76b773f019eb07ab42065 Mon Sep 17 00:00:00 2001
From: Phil Ruffwind <rf@rufflewind.com>
Date: Fri, 8 Apr 2022 22:48:03 -0700
Subject: [PATCH] Update js_usage.markdown to use onRuntimeInitialized

The Emscripten library is not guaranteed to be fully loaded during the
script element's onload event. Module.onRuntimeInitialized seems to be
more reliable.
---
 doc/js_tutorials/js_setup/js_usage/js_usage.markdown | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/doc/js_tutorials/js_setup/js_usage/js_usage.markdown b/doc/js_tutorials/js_setup/js_usage/js_usage.markdown
index 7992fd4096..c543b5dd79 100644
--- a/doc/js_tutorials/js_setup/js_usage/js_usage.markdown
+++ b/doc/js_tutorials/js_setup/js_usage/js_usage.markdown
@@ -122,11 +122,14 @@ imgElement.onload = function() {
   mat.delete();
 };
 
-function onOpenCvReady() {
-  document.getElementById('status').innerHTML = 'OpenCV.js is ready.';
-}
+var Module = {
+  // https://emscripten.org/docs/api_reference/module.html#Module.onRuntimeInitialized
+  onRuntimeInitialized() {
+    document.getElementById('status').innerHTML = 'OpenCV.js is ready.';
+  }
+};
 </script>
-<script async src="opencv.js" onload="onOpenCvReady();" type="text/javascript"></script>
+<script async src="opencv.js" type="text/javascript"></script>
 </body>
 </html>
 @endcode