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

fix #1935 (fix v-model usage with HTML5 validation)
2020-08-25 21:47:55 +08:00
parent 67b6e0f894
commit 1d55454e61
2 changed files with 8 additions and 2 deletions
--- 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') {