javascript key method every code example

Example 1: get keys objet javascript

var foo = {
  'alpha': 'puffin',
  'beta': 'beagle'
};

var keys = Object.keys(foo);
console.log(keys) // ['alpha', 'beta'] 
// (or maybe some other order, keys are unordered).

Example 2: every element in list after first javascript

var middlePoints = ['A', 'B', 'C', 'D'];
middlePoints.shift();

console.log(middlePoints); //['B', 'C', 'D']