this.gettabbar is not a function
时间: 2024-06-18 08:04:22 浏览: 13
this.getTabBar()是小程序的一个API,用于获取当前页面所属的底部TabBar组件实例。如果页面中没有底部TabBar,则调用该方法会报错:this.getTabBar is not a function。
这个错误通常发生在使用了自定义的底部TabBar组件时,需要在组件内部重写Page对象的onLoad()方法,并在其中调用getTabBar()方法来获取底部TabBar组件实例,以便进行自定义操作。
如果你在使用getTabBar()方法时遇到了该错误,请检查以下几点:
1. 是否在页面中使用了自定义的底部TabBar组件;
2. 是否在组件内部重写了Page对象的onLoad()方法,并在其中调用了getTabBar()方法;
3. 是否在调用getTabBar()方法前已经加载了底部TabBar组件。
相关问题
this.getTabBar is not a function
引用\[1\]:根据提供的引用内容,当自定义的 tabbar 在点击tab进行跳转时,custom-tab-bar组件也会刷新页面,所以需要连续点击两次icon才会变为选中状态。为了解决这个问题,可以在每个tab页的onShow方法中定义选中的方法。具体的解决方法如下:如果(typeof this.$mp.page.getTabBar === 'function' && this.$mp.page.getTabBar()) { this.$mp.page.getTabBar().setData({ selected: 0 }) }。\[1\]
引用\[2\]:根据提供的引用内容,可以通过以下方式引入custom-tab-bar文件夹下的index.json:{ "component": true, "usingComponents": { "van-tabbar": "@vant/weapp/tabbar/index", "van-tabbar-item": "@vant/weapp/tabbar-item/index" } }。\[2\]
引用\[3\]:根据提供的引用内容,问题是在组件里面明明正确地定义了methods属性,也定义了init方法,但是页面调用该方法时会报错:this.getTabbar(...).init is not a function。根据提供的代码,可以看出在methods属性中确实定义了init方法。然而,报错的原因可能是因为在页面中调用该方法时,使用了this.getTabbar(),而实际上应该使用this.getTabBar()。所以正确的调用方法应该是this.getTabBar().init()。\[3\]
综上所述,根据提供的引用内容,可以解决问题this.getTabBar is not a function,需要将调用方法改为this.getTabBar().init()。
#### 引用[.reference_title]
- *1* [uniapp编译小程序,小程序中this.getTabBar()输出为undefined](https://blog.csdn.net/weixin_41847305/article/details/125448540)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^control,239^v3^insert_chatgpt"}} ] [.reference_item]
- *2* [微信小程序+VantWeapp自定义tabBar,解决 this.gettabbar is not a function。](https://blog.csdn.net/weixin_52421164/article/details/130848796)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^control,239^v3^insert_chatgpt"}} ] [.reference_item]
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this.attr is not a function
As an AI language model, I am unable to provide a specific solution to this error without further context. However, "this.attr is not a function" is a common error message in JavaScript that usually occurs when you are trying to call a function on an undefined or null value.
The "this" keyword refers to the current object or context in which the function is being called. If "this" does not have a property or method called "attr", then you will receive the error message "this.attr is not a function".
One possible solution is to check that "this" has the expected properties and methods before calling them. Another solution is to ensure that the function you are trying to call is defined and accessible in the current scope.
It is also possible that the error could be caused by a typo or syntax error in your code. Double-check your code for any mistakes and ensure that all variables, properties, and functions are properly defined and initialized before use.