how to add javascript on Jsx – Reactjs
i'm learning Javascript and React and i got a problem. i want to play a javascript function on a jsx files but i don't know where to put it. i explain: I want to make a mouseover effect, when "tech-title"…
React event in parent component and run a function from child component – Reactjs
I have a list of items in my Main component. It has a child component called Posts. The Posts component contains a fetch function that retrieves new data when the user scrolls down through the items. The Main component also…
Fetching Data From MySQL as Json in ReactJs
How do i fetch data from my MySql database as json and then use it in react js...? actually i'm new to React and MySql so i just don't know much about it.. Please help
Why the context variable failed to pass from componet Header.jsx to mainPage.js – Reactjs
I would like the wording used for the layout inside mainPage would change according to the language selected at component Header.jsx. However, change in Header.jsx could not pass to Header.jsx, therefore, noting is changed when clicking on the language selector.…
React: This may happen if you return a Component instead of <Component /> from render – Reactjs
I Am Getting This Error Functions are not valid as a React child. This may happen if you return a Component instead of from render. Or maybe you meant to call this function rather than return it And Matched leaf…
CORS header ‘Access-Control-Allow-Origin’ missing). Status code: 401 in react js – Reactjs
i have a problem when send access tocken in header axios.It returns the following error: Access to XMLHttpRequest at 'http://192.168.0.254:3333/api/DOTMobileApi/test' from origin 'http://localhost:3000' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin'…
Navbar link hover effect – Html
I keep seeing this effect used on a lot of websites and am wondering how they're doing it Example: https://app.uniswap.org/#/?intro=true When you hover over one of the navbar links, it looks like a button instead of a different colored text…
Changing body background image with React – Reactjs
So, I'm trying to create a React App that changes the background image of the body. I did this by giving the body in my index.html an id of "body." I can get this to work with changing the background…
How to fix javascript not sending any req.body to server – Reactjs
I m not getting any req.body parameters. Its working perfectly fine while posting with postman Code: async function postRequest(url, data){ const response = await axios.post(url, data, { headers: { "Content-Type": "application/json" } }) return response.data } server side: app.use(bodyParser.urlencoded({extended: true}))…
React js input onChange Validation is not Working – Reactjs
onChange={(e) => { if (e.target.value.match("^[a-zA-Z]*$") != null) { setName(e.target.value); // console.log(setName); } else { toast.error("Please match the required format"); } }} this required validation is not working. database is updated with empty string