在js中压缩数据数组

Question

in python:
data = [50, 52, 54, 56, 58]
answer = list(zip(data[0:],data[1:]))
print answer
[(50, 52), (52, 54), (54, 56), (56, 58)]

如何在JS中获得相同的答案？

var data = [50, 52, 54, 56, 58];
var answer = ??
print (answer);

Answer 1

map's callback参数三个参数。数组中的元素，数组中元素的索引以及数组本身：

data.slice(1).map(function(el, index) {
  return [data[index], el];
});