From 6137ec2bf2c6398b5980b8cea91ff757a867b222 Mon Sep 17 00:00:00 2001
From: Jon Dufresne <jon.dufresne@gmail.com>
Date: Thu, 7 May 2020 21:02:42 -0700
Subject: [PATCH] Changed selected attribute to HTML5 boolean syntax in
 SelectBox.js.

Per MDN, HTMLOptionElement.selected is a Boolean attribute.
---
 django/contrib/admin/static/admin/js/SelectBox.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/django/contrib/admin/static/admin/js/SelectBox.js b/django/contrib/admin/static/admin/js/SelectBox.js
index 6716e34530..1927b4cefa 100644
--- a/django/contrib/admin/static/admin/js/SelectBox.js
+++ b/django/contrib/admin/static/admin/js/SelectBox.js
@@ -102,7 +102,7 @@
         select_all: function(id) {
             const box = document.getElementById(id);
             for (const option of box.options) {
-                option.selected = 'selected';
+                option.selected = true;
             }
         }
     };