Newbie here, Sorry for the silly question 🙂 How am gonna put the "Key" prop in this function? The code is on the above of ContactShadows. I tried many ways but all the methods I tried are not working properly. Can you please check and tell me how am gonna put the "Key" props? import… Read More "Key" prop in map

I’m in the midst of cleaning up errors for a repo and I’ve come across this error where someone’s trying to to assign a tag value object to a const variable inside of a map function. Here’s its current form: const BatchEditState = { CURRENT: ‘CURRENT’, DELETE: ‘DELETE’, PUT: ‘PUT’, } handleShow = () =>… Read More ReactJS map: Expected an assignment or function call and instead saw an expression – no-unused-expressions

I wrote a little code that uses the map() function: def function(a): if a % 2 == 0: return a else: pass x = map(function, (1,3,2,5,6)) print(set(x)) It’s supposed to return every even number that is provided, If it’s an odd number, I don’t want it to return anything, so I put "pass". However, when… Read More Where did the "None"s come from? | Python map() function

So I have a Notesdata array containing object with properties title, tagline, description. Notesdata array is stored in the "data" state variable in the App component and I am sending this data state variable to notes view component to populate on the UI but when I am appending a new object inside the data state… Read More How to fix Data.map is not a function in Reactjs?

I’ve mapped an array of objects to a div. I would like to change background color of the selected div in getNext12MonthsWithYear map function with useState. Currently on click, background color of all divs is changing, however I want to change only the selected div‘s background color. Here is what I have done so far… Read More Change background color of selected div in a map function

enter image description here i have to create a component where one person can add upto 4 addresses for doing this i have used slice(0,4) in map function but i have to make button disabled when 4 addresses are entered How can i do this i need a solution enter image description here >Solution :… Read More React Js : How can i use index number to disable button ( if index = 4 then disable button )

Apply the map() function to the variable str so that every second word in the string is converted to uppercase. in javascript. str = "hello my name is jon and i live in. canada." >Solution : "hello my name is jon and i live in. canada." .split(" ") .map((word, idx) => idx % 2 ===… Read More target ever second word in a string using map function

I’m doing an e-commerce with React and I’m getting an error say Cannot read properties of undefined (reading ‘map’) Which doesn’t make sense because I have done the same thing in another component and it works well. Here is my code below with the comment on the map function that isn’t working. Let me if… Read More Why I get "Cannot read properties of undefined (reading 'map')" in React, while there is no syntax error