currently, I have the parent component and children component Dialog with different formik form, the brief structure which is like this For some reason I can’t take Dialog out of the parent formik, the issue is when I click the children’s submit button, the parents’ formik form will also be …
Tag: reactjs
Behaviour of a function in useEffect when different browser tab is active
I have a weird issue. I’ve created a function that aims to reset the Linearprogress element after 60 seconds. Then, I have a render of linear progress element like this : Now the weird part : when Im looking at my app all looks normal, after 60 seconds the bar resets to start and that repeats on. Howeve…
Is there anyway to disable the “x” that delete a selected option in react-select?
I’m Working with react-select and I need to disable the option to delete specific selections (hide or delete the x which is in the red square) I have looking for a prop to do it and I found this: But that option hide this: In summary I need to hide the x’s shown at first image but keep the shown
Method for coverting all Firestore Timestamps in a snapshot to JS dates?
How would you write a method to convert all Firestore Timestamps in a snapshot to JavaScript Dates? For example, a snapshot from a posts collection might return a couple Firestore Timestamps (createdDtTm, modifyDtTm): Converting the individual dates is simple enough by mapping over the array and using the toD…
Create sub-headings in a react dropdown component
I have created a drop down menu using the react component . The code is below: The person object is as follows: I was wondering whether it is possible to have sub-headings within this drop down menu in order to group the people (e.g. Men, Women). I have found it possible when using plain javascript but I can&…
When should I use componentDidMount?
In React componentDidMount is used during the mounting phase, for example, one can setState and wrap it in componentDidMount. But, one can use setState directly and then render the component. In which cases should I prefer componentDidMount for a mounting phase? Answer It’s useful for several things: St…
How to use React with function component and hooks ONLY?
Having a React project with some component written in Class style and some others written in Hooks styles make the newcomers confuse and harder to reuse common logic. Is there a way, for example: An alternative library like Preact, Inferno,… which compatible with React but only support hooks Or an ESLin…
React Native Error (Invalid Element Type)
when starting my App on my iOS device I get this error: Error: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but gor: undefined. You likely forgot to export your component from the file it’s defined in, or you might have mixed up defa…
Website crashing due to eventListeners; TypeError: Cannot read property ‘setAttribute’ of null
I’m trying to build and add a custom cursor on my website created using CSS/JS. Everything compiles fine and the webpage loads normally until you move the mouse… even 1 pixel. Upon moving the mouse, the webpage crashes, and I get the TypeError: Cannot read property ‘setAttribute’ of nu…
Context API problem – object is undefined
I’ve been always using Redux, but I finally decided to try to play with Context API, but apparently I’m missing something. I get an error “TypeError: Object(…)(…) is undefined” in App.js, weather and details appear to be undefined. Could you please check out my code in orde…