cara mendapatkan item berikutnya di peta () js
// The callback of map method accepts 3 arguments:
// current item value;
// current item index;
// the array map was called upon.
// So, you could use index to get next element value:
var newArray = myArray.map(function(value, index, elements) {
var next = elements[index+1];
// do something
});
Salo Hopeless