My goal is to make it so I know which video the user has seen in the viewport latest. This was working until I turned the videos into functional React components, which I can’t figure out how to check the ref until after the inital render of the React parent. This is currently the top part of the compon…
Tag: react-hooks
Use state token inside axios instance
I have a state with a token that i get from my api : And I want to reuse the token in an Axios instance : The problem is that I can not read the token via useSelector as : I get the error message : invalid hook call. hooks can only be called inside of the body of a
How to filter array of object value and update the values using useState in React JS
I have a array of object Filter and Update I am trying to filter the object by values where required === true and value.length === 0 and update the filtered array values like helperText = “Enter the ” + label and error = true Answer The validate function should be, this will also take care of reve…
Can’t focus on object before it is hidden (react)
I have this input that when focused opens up a select. The behavior I want could be achieved with a simple select but I wish to further add functionalities that a simple select does not allow. Simply put when you have the ‘box’ focused, you can view the options, when you don’t you cannot. I …
Reactjs: How to add delete icon?
In my project, there is an input field to add email values. Here added chips to convert the added items to tags. but I don’t know how to add the “X” delete button inside each tag I am a beginner in reactjs. I don’t know if there is any problem while using chips component so please give…
React Hook useCallback received a function whose dependencies are unknown. Pass an inline function instead. useMemo doesn’t work
How can i fix this? I see question like this where people said that useMemo can help. But this is not about like that situation and useMemo fix doesn’t work and create just more bugs. Answer can you try this instead? useCallback takes two params.. an inline function, and a dependency array.
why console.log inside the useEffect runs twice
i’m currently working with react project, which gets data from api and show it on the console. although i wrote the console.log() just one time inside the useEffect hooks (with the [articles] dependency ), the web browser’s console.log always shows the console.log two times like this: enter image …
How to render 200+ view without performance issue in react-native
I am trying to make a game in react-native. I want to render 200+ views on the Game screen. Each View has a pressable functionality. Whenever I press the View I need to run a function that will change the View background color and update score on the game context. But Whenever I try to press any View it took
How can I update or re-render a component from another component? (React)
I originally had two components displayed on two different pages via Routes: the RecordList and Create components. It all currently works properly when I use Routes. However, I’m trying to modify this project so that both components are on the same page at the same time instead of being on two different…
Defining hooks inside an array
I would like to create a bunch of filters to pause or play my Video. My implementation is something like as shown below: I know defining hooks inside an if condition is not correct. But how about defining them as above? Could it be done in a better way? Answer In order for React to correctly preserve the stat…