What are closures in JavaScript ?
function increment(){
var a = 1;
return a++;
}

console.log(increment())
console.log(increment())
console.log(increment())

// Prints 0,0,0

Make use of closures to print 1,2,3

Question

What are closures in JavaScript ? 
function increment(){
    var a = 1;
    return a++;
}

console.log(increment())
console.log(increment())
console.log(increment())

// Prints 0,0,0 

Make use of closures to print 1,2,3

Anonymous · Accepted Answer

function increment(){
    var a = 0;
    function inner(){
        return a++;
    }
    return inner;
}

var incrementor = increment();
console.log(incrementor())
console.log(incrementor())
console.log(incrementor())

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