I’m using React to build a form and I’m trying to filter a list with the SearchInput (which works the same as TextInput) located in the child component Header. But everytime I type a character the SearchInput gets unfocused Answer Oh, I think I can see the problem now – it’s the way yo…
Tag: reactjs
How to convert an array of strings into a number?
I’m fetching data from an API which returns currency exchange rates like so: I was able to manipulate the fetched data using: const rate = Object.values(data).splice(11,5); which returns 1.044 However, my next problem comes when trying to parseFloat this object into a number.. for some reason it only re…
Maintaining react state with a hierarchical object using react hooks (add or update)
I have an a state object in React that looks something like this (book/chapter/section/item): I have code that adds or inserts a new chapter object that is working. I am using: And for the chapter update, this is working: But for my update/create for the sections, I’m having trouble using the same appro…
Unable to render navigation screen using react native navigation, stack navigator
I want to navigate in react navigation with my custom side nav bar(Not using drawerNavigator for this). I have placed the side nav bar and bottom bar fixed in app.js as it will be present in all screens. The middle content area should be loaded as per button click on side nav bar. From the docs, im following …
how to make tailwind utility class dynamic
I want to create a simple square using tailwind, but I want to make the class dynamic Answer TailwindCSS doesn’t allow you to generate classes dynamically. So when you use the following to generate the class… …TailwindCSS will not pick that up as a valid TailwindCSS class and therefore will not produce …
map through an object and fill another object
I am trying to map through the data.scales array of objects and display the values in the obj createvalues array as shown in the output. I cannot quite figure this out. I have to make sure I do not delete the values existing in the createValues array The output expected is this one : Answer
Best way to use a placeholder image and then replace it after the image finishes loading?
Currently the google static maps https://developers.google.com/maps/documentation/maps-static/overview takes too long to load which causes a high LCP(large content painting). The solution would be to load a placeholder image and then once the google static maps IMG is finished loading to replace the placehold…
UseEffect only works after refresh the page
I am using an useEffect inside a Context. I think the useEffect should run after load the page, but it does not work, but if I refresh the page(F5) then it works. I am new Using React, but I think it should work with the empty array as arg. This is the Context: EDIT: Now I realized that the problem
concatenation state in useEffect cause loop
i had read some questions and article about this issue including this one: but i don’t find my answer. consider this code. i have a pagination and every time i go to next page i need to concatenate the data with previous one, here is the deal. the react complains about dependency array about list and pa…
Suggestion to refactor code into simple way -React
I have multiple with the same class name and method with different parameter i want to refactor the below code to a simpler way any suggestion would be helpful. I want to refactor the code with the same component. Answer I hope this would be helpful. thanks