From: daiwei <daiwei521@126.com>
Date: Thu, 12 Jun 2025 14:12:11 +0000 (+0800)
Subject: chore: avoid empty class
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2f89d6ea09f35374ac86e05a6bc6ad25187228a2;p=thirdparty%2Fvuejs%2Fcore.git

chore: avoid empty class
---

diff --git a/packages/runtime-vapor/src/dom/prop.ts b/packages/runtime-vapor/src/dom/prop.ts
index f464a2f629..8c42ad766a 100644
--- a/packages/runtime-vapor/src/dom/prop.ts
+++ b/packages/runtime-vapor/src/dom/prop.ts
@@ -122,7 +122,9 @@ function setClassIncremental(el: any, value: any): void {
   const prev = el[cacheKey]
   if ((value = el[cacheKey] = normalizeClass(value)) !== prev) {
     const nextList = value.split(/\s+/)
-    el.classList.add(...nextList)
+    if (value) {
+      el.classList.add(...nextList)
+    }
     if (prev) {
       for (const cls of prev.split(/\s+/)) {
         if (!nextList.includes(cls)) el.classList.remove(cls)