
function getSumFn(){
	
 var prevSum = 0;
 return function sum(value){
 	prevSum = prevSum + value;
  return prevSum;
 }
}

const sum = getSumFn();

console.log(sum(1));
console.log(sum(5));
console.log(sum(9));
console.log(sum(10));


interview question - write a program to remember the sum of previous value 

function getSumFn(){	&nbsp;var prevSum = 0;&nbsp;return function sum(value){&nbsp;	prevSum = prevSum + value;&nbsp;&nbsp;return prevSum;&nbsp;}} const sum = getSumFn(); console.log(sum(1));console.log(sum(5));console.log(sum(9));console.log(sum(10));