javascript - How to combine list elements into pairs -

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is there convenient function in javascript, or without underscore.js, takes list of form [a, b, c, d] , transforms list of form [[a, b], [b, c], [c, d]]?

this solved array.prototype.map:

var makepairs = function(arr) {      // want pair every element next 1      return arr.map(function(current, i, arr) {          // return array of current element , next          return [current, arr[i + 1]]      }).slice(0, -1)      // every element except last, since `arr[i + 1]` `undefined`  }    var arr = [1, 2, 3, 4]  // should never use `document.write`, except in stack snippets  document.write(makepairs(arr).join("<br>"));


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