fix: h5端transparentTitle失效的Bug https://ask.dcloud.net.cn/question/91135

src/platforms/app-plus/service/framework/webview/parser/title-nview-parser.js

@@ -38,6 +38,9 @@ export function parseTitleNView (routeOptions) {
     (
       windowOptions.navigationStyle === 'custom' &&
       !isPlainObject(titleNView)
+    ) || (
+      windowOptions.transparentTitle === 'always' &&
+      !isPlainObject(titleNView)
     )
   ) {
     return false
@@ -56,7 +59,7 @@ export function parseTitleNView (routeOptions) {
     titleText: titleImage === '' ? windowOptions.navigationBarTitleText || '' : '',
     titleColor: windowOptions.navigationBarTextStyle === 'black' ? '#000000' : '#ffffff',
     type: titleNViewTypeList[transparentTitle],
-    backgroundColor: transparentTitle !== 'always' ? windowOptions.navigationBarBackgroundColor || '#000000' : 'rgba(0,0,0,0)',
+    backgroundColor: windowOptions.navigationBarBackgroundColor || '#f8f8f8',
     tags: titleImage === '' ? [] : [{
       'tag': 'img',
       'src': titleImage,

src/platforms/h5/components/page/index.vue

@@ -39,6 +39,10 @@ import {
   NAVBAR_HEIGHT
 } from 'uni-helpers/constants'
 
+import {
+  isPlainObject
+} from 'uni-shared'
+
 import {
   mergeTitleNView
 } from 'uni-helpers/patch'
@@ -164,6 +168,19 @@ export default {
     }
     // 将 navigationStyle 和 transparentTitle 都合并到 titleNView
     let titleNView = this.titleNView
+    if ( // 无头
+      titleNView === false ||
+      titleNView === 'false' ||
+      (
+        this.navigationStyle === 'custom' &&
+        !isPlainObject(titleNView)
+      ) || (
+        this.transparentTitle === 'always' &&
+        !isPlainObject(titleNView)
+      )
+    ) {
+      titleNView = { type: 'none' }
+    } else {
       titleNView = Object.assign({}, {
         type: this.navigationStyle === 'custom' ? 'none' : 'default'
       }, this.transparentTitle in titleNViewTypeList ? {
@@ -171,6 +188,7 @@ export default {
       } : null, typeof titleNView === 'object' ? titleNView : (typeof titleNView === 'boolean' ? {
         type: titleNView ? 'default' : 'none'
       } : null))
+    }
 
     const yesNoParseList = {
       'YES': true,