Aim: Write a function redundantReturn that takes in a string a parameter named str. This function should return another function that returns a message using the str variable. Print that message to the developer console.
Closures are functions that remember their lexical environments. Lexical environments mean the environment in which the function was declared.
function parent(x) {
return function closure() {
// Closure is declared here.
return x;
};
}
const remember = parent("remembers me");
// Seems like the variable x would be gone after
// parent is executed, but it's not.
closure();
// Return "remembers me"Aim: Fix the code to correctly implement the callback.
You will be given an array of drinks, with each drink being an object with two properties: name and price. Create a function with the drinks array as an argument and return the drinks objects sorted by price in ascending order.
Assume that the following array of drink objects needs to be sorted:
drinks = [
{ name: "lemonade", price: 50 },
{ name: "lime", price: 10 }
];The output of the sorted drinks object will be:
Examples
const drinksByPrice = sortDrinkByPrice(drinks);
console.log(drinksByPrice); // [{name: "lime", price: 10}, {name: "lemonade", price: 50}]Aim: Create the function that takes an array with objects and returns the sum of people's budgets.
Examples
getBudgets([
{ name: "John", age: 21, budget: 23000 },
{ name: "Steve", age: 32, budget: 40000 },
{ name: "Martin", age: 16, budget: 2700 }
]) ➞ 65700
getBudgets([
{ name: "John", age: 21, budget: 29000 },
{ name: "Steve", age: 32, budget: 32000 },
{ name: "Martin", age: 16, budget: 1600 }
]) ➞ 62600Write a function that converts an object into an array, where each element represents a key-value pair in the form of an array.
Examples
toArray({ a: 1, b: 2 }) ➞ [["a", 1], ["b", 2]]
toArray({ shrimp: 15, tots: 12 }) ➞ [["shrimp", 15], ["tots", 12]]
toArray({}) ➞ []