I have a simple case:
<component-a>
<component-b/>
</component-a>
Im I able to catch error from component B in component A?
What the best practice to handle error in stencil app?
Is there a kind of react error boundary?
You could try and define a custom #Event (e.g. errorEvent) in component-b that fires every time that the error occurs, and the component-a can #Listen("errorEvent") and do what needs to be done.
Related
I have a problem with the redundant of routes on vuejs.
I have a Vuejs page with Query that I would like to be able to change continuously but when I make the change (this.$router.replace({query: newQuery})), It show me this Error :
**Uncaught (in promise) Error: Avoided redundant navigation to current location:**
Error Screenshot
This is happening because you are trying to replace the current route with the same route you're actually in.
You should avoid the renavigation to the current location, but if you decide to not avoid it then you need to catch the promise so the browser things the exception is being handled:
Any router action is a promise, you just need to catch it:
this.$router.replace({query: newQuery}).catch(()=>{});
Vue Router documentation on navigation failures
Disclaimer: I know this answer has already been asked, but in my case I need a solution for a specific case that is not really covered by other questions/answers.
In my react-native application, I do a lot of network requests that may take a long time to complete. Each request is handled in two main ways:
The request completed successfully. The global redux/flux state is updated and therefore the nested components are updated as well.
The request throws an error. A network error, a server error, a 400 error, whatever. In this case a message must be displayed to the user, in the form of a message that appears on the screen or as an alert.
My problem is that when a component is unmounted, the fetch callbacks are processed anyway when the request completes. In the first case, this is not a problem: the store is updated successfully and everyone is happy.
In the second case though, it is a problem because:
The alert would be displayed in a different screen, which is not correct and led to problems with the Modal component which I use to present error alerts.
The appearance/disappearance of the error message is controlled by the component LOCAL state, which can not be updated on an unmounted component and therefore throws an error.
What are my possibile solutions here? The most trivial one would be to use in each component a _isMounted property and in each fetch error handler, don't do anything if _isMounted == false. However, this approach is verbose and an antipattern.
Do I have any other option?
If you are using react-navigation I believe you could deduct the state in actions and not call the alert.
My suggestion is that you pass the navigation prop to action method and deduct the navigation state there and call the alert as you require.
I am new to react native and I am having a warning that I just don't know how to get rid of it, is it ok if I just hide it as long as it does not become an error to crush my app?
The warning I receive:
Warning: Cannot update during an existing state transition (such as
within render or another component's constructor). Render methods
should be a pure function of props and state; constructor side-effects
are an anti-pattern, but can be moved to componentWillMount.
I tried to manage to not happen this warning but if I register a user and than go back to signupscreen and if I try to register another one the warning comes up.
It's best to resolve that warning, you need to look where your updates to the state are happening.
If you do updates to the state or props inside of your render function you are creating infinite render loops.
To help with this problem I need to have your code from render() function. You can Upload it here. Then I can review your code. It will help to solve this problem.
I'm trying to integrate third-party component Adaptive card in my application using VueJs but getting following error when wrapping it inside a separate component so that I can re-use it in other places.
Error in mounted hook: "TypeError: this._card.onExecuteAction is not a
function"
I've created a Demo to show the work done so far, can anyone suggest what I'm missing here.
I just need to integrate this adaptive card in my project as a reusable component
In fact, you are trying to call onExecuteAction function, instead of assigning it. It can be fixed, like this: this._card.onExecuteAction = action => this.$emit("action", action);
ps. i suggest you need also use :card="card" in your component template definition in TodoLis.vue and then add something like #action="handleAction" to it, to handle events emitted by your component.
I have a small application in react-native with two components.
on Navigating to a component twice this gives me error for setState function.
Anybody have idea about this .
I am using native base as an starter kit for my project.
the only change I did is I have seperated the UI render part in different js file.
Thanks in advance.
this has something to do with your render function.
the setstate function gives error when there is no such state variable available.
may be on navigating again to that same screen it is giving you a new state for that page instead of the previous state.
Please check your render function.