how to get values from Object.keys in javascript 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: get all keys of object in javascript

myObject = {
	"key": "value",
    "key2":"value2"
}
Object.keys(myObject);
//console.log(Object.keys(myObject))   = ["key", "key2"]

Example 3: javascript object get value by key

var obj = {
   a: "A",
   b: "B",
   c: "C"
}

console.log(obj.a);  // return string : A

var name = "a";
console.log(obj[name]);