Questions tagged [reactjs]
The reactjs tag has no usage guidance.
108
questions
4
votes
1answer
115 views
ReactJS with Elasticsearch App Architecture
I want some advice regarding my architecture and hosting options.
I'm attempting to build an e-commerce site for e-books. It will use nestJS for the backend and ReactJS+Typescript for the frontend.
...
-2
votes
0answers
27 views
How should you best distinguish between "Existing" and "New" forms of an object creation page in React? [closed]
Say I have a page in a React app that allows you to create a User Profile. But I want the component to be reusable in a way that also allows it to be used to view an existing Profile. I'm wondering if ...
-1
votes
0answers
38 views
React: how to set the state of a component from an external function using logic based on the CURRENT, UPDATED state of that component?
If you want to set the state of a component A from within A using logic based on the current, updated (!) state of that component, you can use the updater function which passes the current, updated ...
1
vote
2answers
115 views
Best Practice: Should cascading updates be handled by the frontend or the REST API?
I am designing a timesheet app for logging user tasks using React for frontend and Django REST Framework for backend. The database is PostgreSQL and I have a table for recording the tasks with 4 ...
0
votes
0answers
21 views
React Redux chain-of-actions pattern - should I create new synchronous middleware for synchronous actions?
I am creating React Web application with Yii2 API and Redux-Saga which calls Yii2 API (asynchronously).
I am stuck with one especially large and complex user action (initiated by the selection of good,...
2
votes
2answers
2k views
Why are React keys limited to strings?
In React, when rendering a mapping from elements of a list/array/iterable to React elements, we're required to attach a locally-unique key to each element. Generally this is so that if an element ...
0
votes
1answer
38 views
Replacing ASP.Net 4 app with microservices and React
Backstory:
My new employer has Dynamics CRM on-prem and it is used by all office staff and other colleagues that are consultants. All other employees are a working force out on various construction ...
0
votes
1answer
336 views
Is it an anti-pattern on React to search for children with a specific element type?
Context
When designing the API of a React component, you may decide to receive props in a more semantical way. Here's a simple example
<Modal headerTitle="foo" />
vs
<Modal>
&...
0
votes
1answer
313 views
Integrate react app with php app
I have an old php web application, with very bad code.
While a lot of it just has html and ajax calls in the, the wrapper is still php.
I want to develop the new modules in react, and slowly replace ...
1
vote
4answers
409 views
Lead developer wants to use a micro-frontend design pattern. Are my concerns valid?
I'm a React developer at a large company working on an enterprise application which draws on a large amount of data, but performs a very specialized task and has only a handful of internal users. The ...
-1
votes
1answer
35 views
Where should I put/handle periodic data updates in React?
I'm following the guide in https://reactjs.org/docs/thinking-in-react.html which makes sense for data that I request and update on a filter.
However, I want to have some sort of general ...
1
vote
1answer
49 views
Anyone have data on impact on UX of shipping profiling build in production to users?
I understand that using the React Profiler in production should have a small or negligible impact on user experience at least for profiling 20-50 (guess) components on a page.
I would like to know if ...
0
votes
2answers
53 views
React: Ternary operator within component vs outside component
I have a pull request and this pr is being reviewed by co-worker.
Context
I'm using React and a specific component has ternary operator within component like below.
const ExampleComponent = (): React....
1
vote
1answer
472 views
Authentication with JWT in HTTP only cookie without refresh token
The motto of the upcoming question is "I don't know what I don't know".
I would like to know if there are downsides or security risks with an authentication implementation.
Right now, I'm ...
-1
votes
1answer
64 views
Loading in and Autocompleting a CSV File React
I'm currently working on a React Application with Firebase that involves a ton of data manipulation and reading. One specific feature is the ability to autofill a form based on a very large CSV file (...
0
votes
0answers
32 views
Push Notifications from React JS / PWA?
I've built a React JS app that is used by PC and Tablet users alike. Some iOS users also bookmark the site to create a PWA, which works really well.
So everything is fine, except i need Push ...
0
votes
1answer
58 views
Reactjs with large DB
I am working with a very large SQL database through a frontend reactjs application with a node server intermediary using an ORM for query sanitation. However due to the size of the DB it takes some ...
-3
votes
1answer
74 views
Sharing React Native Component as a "black box"
I'm looking for a way to share a React Native component with 3rd parties without having to share the actual source code.
Something like a .jar in Java or a .dll for C#.
So assuming we have company A ...
0
votes
0answers
30 views
Design to store user information in session storage in react
Wanted to ask if the following design is okay based on my requirements:
Brief Description of my requirements:
I have a requirement to gather some info from the user and then the user attaches a file ...
-1
votes
1answer
2k views
How to store blog post in database - React & GraphQL
I am building travel blog using React as frontend Javascript framework along with GraphQL. I am doing this project by myself as a pilot test and I am currently in a phase of translating photoshop ...
-2
votes
2answers
142 views
Advice: How to secure access to photos in a React App
I have a React App (created via create-react-app) secured with OAUTH2. Currently all dynamic content is via REST APIs, secured with the same OAUTH2 token issued at login. It is hosted on AWS.
I want ...
-2
votes
1answer
137 views
Should I repeat my code or use if statement?
A question from a friend:
I have multiple usages for the same code, let's say a vertical HTML card. I change the title and a lot of data based on the react component.
it feels unnecessary performance-...
-3
votes
1answer
42 views
Testing a React component which receives a function as a prop
Suppose there's a root <App /> which houses multiple components, one of them being, say <SearchBox />.
App component houses the app state (such as searchResults array) and iterates the ...
1
vote
0answers
76 views
Reactjs + nodejs external authentication flow
I am developing a RESTful application with nodejs in the backend with express.js as middleware. I am also developing a client in Reactjs.
I want to use an external authentication service (LDAP/AD/ADFS)...
27
votes
14answers
9k views
Ways to explain code when told it doesn't make sense
As a programmer I have found my code frequently elicits the reaction "I don't understand". Whenever I get this response I try my best to explain my code patiently, and not make anyone feel ...
1
vote
2answers
309 views
React says refs and imperative code are not the right tool for showing and hiding dialogs. Why though?
The docs explicitly state this:
Avoid using refs for anything that can be done declaratively.
For example, instead of exposing open() and close() methods on a Dialog component, pass an isOpen prop to ...
0
votes
3answers
178 views
React - When is a backend necessary?
So I'm currently playing around with web development as a project, and I've been looking at React recently. My current issue is that I'm having trouble distinguishing between front and back end ...
3
votes
1answer
2k views
How to passing variables from php to react.js component?
For example, I have a react.js component named Question which need the props title,id,content.
<div id="main-section">
<div id="question"></div>
</div>
ReactDOM.render(
...
2
votes
0answers
106 views
React Hooks: using state in useEffect without depending on it
I have run into a situation in React where I want to run a function F in a useEffect hook whenever a value V1 from the store changes. F uses another value from the store V2. I only want to run F when ...
1
vote
1answer
39 views
what kind of relationship do child components have with components in react?
I'm currently writing a paper on my react frontend and I'm struggeling to find the right verb for the interaction between child-components and components in react.
For example:
"I have a table ...
1
vote
0answers
13 views
Best way to allow other components to change table's focused row?
I have displayProjectTable that gets state from reducer projectData and populates itself.
Currently displayProjectTable has a local state that stores focusedRowID. My problem is that I want other ...
-1
votes
1answer
858 views
Recommend a way to handle multiple UI frameworks in a pattern library
We are setting up a pattern library.
It's use is on the one hand to document and display our UI elements in a web view. On the other hand, it should also be the place where components are built. The ...
-2
votes
1answer
56 views
React class or function for stateful components?
Which is better to use? react class based stateful component or react hooks functional stateful component? I've searched a bit but couldn't find what is preferred to use.
4
votes
3answers
396 views
How to manage chaotic code explosion in React application
So we decided to redo UI of our web application in React. Six months down the lane and we have a complete mess of components and reducers and thunks and actions and god knows what not.
We have ...
2
votes
1answer
343 views
Render constant props components from an object or by hand?
Lets say I have a component that render some "static" information and another one that is the parent of these components.
function Foo(){
...
return (
<Bar name="I" {......
0
votes
1answer
170 views
Wrapping ReactJS UX component library in another layer of abstraction, pros and cons?
There's AntD library with various UX components. Right now I required to wrap all components which I'm using in another layer, to make an abstraction. For example, if I'm using AntForm component I ...
1
vote
0answers
113 views
Where to place code which synchronizes state of Redux with localStorage?
In our project, I was need to sync a piece of information between localStorage and the Redux state. Actually I subscribed to changes in a localStorage and in Redux, and if change happens in ...
2
votes
0answers
103 views
Dependency injection of UI components via React context
In React, it's common for libraries, and app-internal utilities, to used context-based dependency injection. Some examples:
function MyComponent() {
const client = useApolloClient(); // Apollo
...
2
votes
0answers
2k views
Updating nested state with React Hooks and Typescript - performance vs clarity
I have some deeply nested react components. Let's limit them to 3 levels of nesting and call them Parent, Children and Grandchildren. The state for the entire app is stored in a single object in the ...
12
votes
3answers
6k views
Understanding Flux pattern
I'm actually studying the flux pattern and there's something that I can't understand concerning the stores.
What are they exactly?
I have read many articles, and it seems that it concerns the ...
2
votes
1answer
65 views
ReactJS - lift state to main container or export a helper?
I'm using ReactJS (React Hooks, specifically) to build an application. Part of that application involves account creation, sign-in, and authentication. I only recently finished the sign-in feature, ...
-1
votes
1answer
189 views
Why is it called a functional component?
A quick google search shows that the question I have has not been asked directly, and so I ask it here. For what its worth, I am learning react, and I come from a C++ background, where as far as I ...
0
votes
1answer
1k views
Passing javascript function vs use imports in Svelte or React component
I wanted to use some function from javascript module in one of my component. Should I pass it in props when making the component or should I just use Imports in component itself to get the javascript ...
0
votes
0answers
29 views
Methods for storing data pre-registration in a web app
I have a web app - it's more complicated than a todo list but for simplicity sake let us assume it is a todo list. The user has the choice to sign up and create an account thus allowing them to store ...
1
vote
2answers
1k views
How to effectively handle 404/500 http errors in server-side rendering web application which uses store for state?
I'm working on a website using server-side rendering approach. I'm using React and Redux for this. Redux handles the state of the application and provides API to change the state. All asynchronous ...
3
votes
0answers
195 views
Architecture and Security in a Web/Native app while generating PDFs
I am trying to make a system where a user can view/download his statements (say salary slips). The user will have ability to download PDF versions of these statements and can also save them to Google ...
0
votes
3answers
231 views
When does it make sense to make an individual React component?
The most obvious criteria for me is for component re-usability, as well as internal state management but aside from that are there are any other good reasons?
For instance, I could have a component ...
2
votes
0answers
75 views
Where to store the state of a complex form in React?
Let us consider a complex form of registering a driver and owner.
The driver will have all these fields:
driver = {
firstName: "xyz",
lastName: "abc",
phone: "1234",
email: "m@g.com,
licence: "...
1
vote
0answers
117 views
Is it better to have a default avatar library on client or server side?
I have a webapp using ReactJS as the frontend and Rails as the backend service.
I have an account manager, where a user can choose multiple avatars from a default library. This library contains ...
1
vote
0answers
418 views
Plugins system for an Electron/React app
I'm developing a Electron/React app which uses Webpack and Asar technologies. It's designed to be a host app providing a common platform for some plugins. These plugins are downloaded and plugged into ...
