From: ᴜɴвʏтᴇ <i@shangyes.net>
Date: Tue, 25 Aug 2020 13:47:55 +0000 (+0800)
Subject: fix(runtime-dom): avoid setting unchanged input value (#1937)
X-Git-Tag: v3.0.0-rc.8~3
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1d55454e61bf18cc2d6fe948c4528a680f67efe5;p=thirdparty%2Fvuejs%2Fcore.git

fix(runtime-dom): avoid setting unchanged input value (#1937)

fix #1935 (fix v-model usage with HTML5 validation)
---

diff --git a/packages/runtime-dom/src/directives/vModel.ts b/packages/runtime-dom/src/directives/vModel.ts
index 0516569f1a..23ebb07b35 100644
--- a/packages/runtime-dom/src/directives/vModel.ts
+++ b/packages/runtime-dom/src/directives/vModel.ts
@@ -85,7 +85,10 @@ export const vModelText: ModelDirective<
         return
       }
     }
-    el.value = value == null ? '' : value
+    const newValue = value == null ? '' : value
+    if (el.value !== newValue) {
+      el.value = newValue
+    }
   }
 }
 
diff --git a/packages/runtime-dom/src/modules/props.ts b/packages/runtime-dom/src/modules/props.ts
index ebecc8972c..1a50d612b5 100644
--- a/packages/runtime-dom/src/modules/props.ts
+++ b/packages/runtime-dom/src/modules/props.ts
@@ -28,7 +28,10 @@ export function patchDOMProp(
     // store value as _value as well since
     // non-string values will be stringified.
     el._value = value
-    el.value = value == null ? '' : value
+    const newValue = value == null ? '' : value
+    if (el.value !== newValue) {
+      el.value = newValue
+    }
     return
   }
   if (value === '' && typeof el[key] === 'boolean') {