fix(runtime-core): handle initial undefined attrs (#5017)

fix #5016
2021-12-06 13:58:45 +08:00
parent 34985fee6b
commit 6d887aaf59
2 changed files with 23 additions and 1 deletions
--- a/packages/runtime-core/src/componentProps.ts
+++ b/packages/runtime-core/src/componentProps.ts
@@ -369,7 +369,7 @@ function setFullProps(
            continue
          }
        }
-        if (value !== attrs[key]) {
+        if (!(key in attrs) || value !== attrs[key]) {
          attrs[key] = value
          hasAttrsChanged = true
        }