From cbc15c9c31fa855304b4b63c13a0c8fb0ef61275 Mon Sep 17 00:00:00 2001
From: Richard Gibson <richard.gibson@gmail.com>
Date: Mon, 8 Jan 2024 12:30:39 -0500
Subject: [PATCH] Manipulation: Support $el.html(selfRemovingScript)

Don't try to remove a script element that has already removed itself.

Fixes gh-5377
Closes gh-5378

(cherry-picked from commit 937923d9ee8dfd19008447b5059cbd13ee5a23ac)
---
 src/core/DOMEval.js       |  4 +++-
 test/unit/manipulation.js | 15 +++++++++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/src/core/DOMEval.js b/src/core/DOMEval.js
index 59f6e0247..e3ecd60ac 100644
--- a/src/core/DOMEval.js
+++ b/src/core/DOMEval.js
@@ -36,7 +36,9 @@ define( [
 				}
 			}
 		}
-		doc.head.appendChild( script ).parentNode.removeChild( script );
+		if ( doc.head.appendChild( script ).parentNode ) {
+			script.parentNode.removeChild( script );
+		}
 	}
 
 	return DOMEval;
diff --git a/test/unit/manipulation.js b/test/unit/manipulation.js
index 975813e34..f894cc626 100644
--- a/test/unit/manipulation.js
+++ b/test/unit/manipulation.js
@@ -1871,6 +1871,21 @@ QUnit[
 	}, 1000 );
 } );
 
+QUnit.test( "html(self-removing script) (gh-5377)", function( assert ) {
+	assert.expect( 2 );
+
+	var $fixture = jQuery( "#qunit-fixture" );
+
+	$fixture.html(
+		[
+			"<script>document.currentScript.parentNode.removeChild( document.currentScript ); QUnit.assert.ok( true, 'removed document.currentScript' );</script>",
+			"<div>",
+				"<script>document.currentScript.parentNode.removeChild( document.currentScript ); QUnit.assert.ok( true, 'removed inner document.currentScript' );</script>",
+			"</div>"
+		].join( "" )
+	);
+} );
+
 QUnit.test( "html(Function) with incoming value -- direct selection", function( assert ) {
 
 	assert.expect( 4 );
-- 
2.39.5