From dc6ddee6649daf14c1de1a4d1d646a79b596d308 Mon Sep 17 00:00:00 2001
From: penwa <21547602@qq.com>
Date: Tue, 30 Mar 2021 01:14:10 +0800
Subject: [PATCH] fix:  the value should be judged as null or undefined when
 transform the defaultValue

---
 packages/nerv/src/create-element.ts | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/packages/nerv/src/create-element.ts b/packages/nerv/src/create-element.ts
index 027f28b9..8b005c50 100644
--- a/packages/nerv/src/create-element.ts
+++ b/packages/nerv/src/create-element.ts
@@ -7,7 +7,8 @@ import {
   Props,
   VNode,
   VirtualChildren,
-  EMPTY_CHILDREN
+  EMPTY_CHILDREN,
+  isNullOrUndef
 } from 'nerv-shared'
 import SVGPropertyConfig from './vdom/svg-property-config'
 import Component from './component'
@@ -16,8 +17,8 @@ function transformPropsForRealTag (type: string, props: Props) {
   const newProps: Props = {}
   for (const propName in props) {
     const propValue = props[propName]
-    if (propName === 'defaultValue') {
-      newProps.value = props.value || props.defaultValue
+    if (propName === 'defaultValue' || propName === 'value') {
+      newProps.value = !isNullOrUndef(props.value) ? props.value : props.defaultValue
       continue
     }
     const svgPropName = SVGPropertyConfig.DOMAttributeNames[propName]