Closure/Не знаю как написать функцию с замыканием

Question

Write add function which consumes x as argument (number) and returned other function which consumes y as argument (number)

and return the sum of x and y

function foo() {
function add(x) {
}} // Upgrade this function

should summarize two values using closure

should sum 3 and 5
should sum 4 and 2
should sum 9 and -2

Answer 1

function add(x) {
    function other(y) {
        return x+y;
    }
    return other;
}

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Closure/Не знаю как написать функцию с замыканием

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