I am working on building a web application using reactJS. We should display the product users subscribed to. Number of products each user subscribes to differs. For Example, here is the response : So, the subscription data is dynamic. How can I display the above data in tabular data as follow :Mock User can s…
Tag: reactjs
return a cleanup function returning form the async function in userEffect in react Native
I am using a firebase onSnapshot method to use realtime data in react native app and wrote a separate async function to listen to the firestore as given below, I am using useEffect to call this function and I want to return the subscriber method returning from the firestore as a cleanup function. I know that …
setState callback not waiting state to update
I have this piece of code: Im calling this function on this piece of code: The things is im getting: TypeError: Cannot read property ‘value’ of undefined It’s saying the problem is in this line: maxLevel: event.target.value. I dont get it, isnt the callback supposed to wait for the first set…
Why my data is flickering between previous and new when state is updated in ReactJS?
I’m working on a SPA with data fetch from the Star Wars API. In the characters tab of the project, the idea is to display the characters per page and you can click next or prev to go to page 2, 3, etc. That works, but! the character names flicker everytime the page changes, it doesn’t happen after…
Resetting redux states on url change
I have a project that redux working on. But when I click on a <Link> component or click on to the “previous page” button on chrome, redux keeps the states I changed before. I tried the LOCATION_CHANGE action from connected-react-router and use it in reducer but it does not seem to work. redu…
Separate onClick event for parent and child element
I have JSX code like this: When I click on parent (outside the child) it will run clickOnParent, and when I click the child it will run both clickOnParent and clickOnChild of course.Now I want to trigger only clickOnChild and ignore clickOnParent when clicking exactly on the child. How can I do? Answer Use Ev…
reactJS useState hook actual value is out dated in async promises
In my react function component I send multiple server request and update a state hook value through asynchronous promises by appending server results to state most recent value, but once promise is created, value of state hook is not updated within the running promise, so if another promise updates state valu…
Trying to add a detail product component. React-router
I have a component products which lists every product in the /Productsurl. I’m trying to make another component Detail that displays specific product in the browser. This is the URL I’ve been trying to create Detail/{some id goes here}. The problem is how am i going to know which product clicked, …
How to return a character n times before an element react
I want to add a random amount of characters before an element, repeat that element 20 times, with a diffrent amount of characters before each time. For example: An example of what I want to return is Hello World! This is time 1 Hello World! This is time 2 Hello World! This is time 3 Hello…
React Controlled Form with Child /Parent component
I’m building a controlled form with dynamic fields. The Parent component get data from a redux store and then set state with the values. I don’t want to make it with too much code lines so I turn the dynamic fields into a component. States stay in the parent component and I use props to pass the h…