自定义导航栏
- 当前 Bug 的表现（可附上截图）
当从子页面返回到当前页面时会出现！
VM14224:5 TypeError: Cannot read property ‘__wxSlotChildren’ of undefined
at r (:15117/__pageframe__/pageframe.html:9)
at :15117/__pageframe__/pageframe.html:9
at :15117/__pageframe__/pageframe.html:9
VM14225:5 webviewScriptError
Cannot read property ‘__wxSlotChildren’ of undefined
TypeError: Cannot read property ‘__wxSlotChildren’ of undefined
at r (http://127.0.0.1:15117/__pageframe__/pageframe.html:9:20904))
at http://127.0.0.1:15117/__pageframe__/pageframe.html:9:21093
at http://127.0.0.1:15117/__pageframe__/pageframe.html:9:21148
