SumAll

by Jin

JavaScript

var arr = [1,4]

var test = [];

var x = Math.min.apply(Math, arr);
  var y = Math.max.apply(Math, arr);
 for(var i = x; i<=y; i++){
   test.push(i);
 }
  
  function add(add1,value1){
    return add1 + value1;
  }
  
  console.log(test.reduce(add,0));