The first arrow function in flatMap does not get me what I need, the second arrow function does. I need to turn data into the flat name array ['John', 'Jane', 'Bob'] const data = [ [{ name: 'John', age: 25…
I am trying to build a simple to-do list where each task can be edited by clicking on edit button which shows a previously hidden text field in which user can enter new name for the current task, for this…
The wrapper function takes two inputs, one is the component and the other is the class name. My question is, why didn't we directly use jsx codes after return? Why did we put an arrow function after return? If I…
I was working on a react project and came accross this situation. Is it okay to set an empty arrow function to a variable while destructuring in javascript. Are there any cons if done like this ? const { onClick…
I'm a beginner/intermediate JavaScript programmer and recently got a couple of exercises handed out on job interviews. I have to write a function in JavaScript called find that takes two parameters, one of which is an arrow function, containing one…
So as I am reading on the execution context in javascript and how does it works, everything seemed fine until I tried some examples on the this value of callback arrow functions. const printCard = function () { this.signatories.forEach((signatory) =>…
As I checked on MDN, method of a class looks like this: class Foo { method1 (){ // content of method1 } } However I found it's not good for event handlers <!doctype html> <html lang="en"> <head> <title>test</title> </head> <body>…
code I want the "elem" parameter of my component to be another component based on the boolean that is passed into my arrow function. I have tried passing in "mobile" as a parameter into these arrow functions as it was…
I'm learning JavaScript through freeCodeCamp and the way they explained (or rather, didn't) arrow functions has led to some massive confusion for me. I am familiar with calling a function using arrow notation like this: const myFunc = () =>…
Q1.) Why I am getting undefined if i pass console.log in then block in a promise chian? new Promise((resolve, reject) => { console.log(4) resolve(5) console.log(6) }).then(() => console.log(7)) .catch(() => console.log(8)) .then(() => console.log(9)) .catch(() => console.log(10)) .then(() => console.log(11))…