Lets say that I'm manually adjusting the index of an array in JavaScript. I have a function that will increase the index and another that will decrease it. I want these functions to loop (so increasing the index when already…
I'm learning about localStorage and I'm trying to build a basic shopping cart function. The process is: user clicks on "Add To Cart" button. If localStorage("shoppingCart") doesn't exist, then localStorage.setItem("shoppingCart", itemToAdd). If localStorage("ShoppingCart) DOES exist (which for testing purposes, it…
I am working on a React project which involves making queries to a Firebase database to check if a username has been taken. The result I get from the query would be an array. When the array is not empty,…
I have been wracking my brain for a week on this problem and would appreciate any help or suggestions. I have a form that collects the users first name, last name and song. It stores those values in an object…
i have dropdown values at frontend as follows. You can see the first 2 values Mar and May are checked based off the checked property in dropdownValues below. let dropdownValues = [ {key: 'Mar', checked: true}, {key: 'May', checked: true},…
Technical question here. I created a context provider to handle the state of some variables and to create functions to update these variables from other components. It is of my understanding that StricMode calls setStates twice, however, how are we…
I am using javascript to populate the HTML inside my todo list, but I am struggling to implement a way of storing the data inbetween refreshes of the webpage. I know I should be using localStorage get/set but I'm unsure…
I have a array of number. I want to filter a new array which have element which index is divided by two Example: let arr = [1, 4, 5, 2, 8, 9, 7, 10]; I want filter a 2 new…
I want to create a callback function to remove from a numeric array the given values. Given this array: [ 0, 0, 0, 0, 1, 0, 3, 4, 5, 2, 0, ]; I want to create a callable function to…
I've been trying to create a table that auto fill empty fields depending of the previous information provided but I don't know how to make it possible, do you have any idea? Here's an example of an array of fruits…