FreeCodeCamp.com - Basic JavaSript - Using Objects for Lookups

Link to FreeCodeCamp

A big thank you goes to SaintPeter, for giving this advice.

Objects can be thought of as a key/value storage, like a dictionary. If you have tabular data, you can use an object to "lookup" values rather than a switch statement or an if/else chain. This is most useful when you know that your input data is limited to a certain range.
Here is an example of a simple reverse alphabet lookup:
var alpha = {
1:"Z",
2:"Y",
3:"X",
4:"W",
...
24:"C",
25:"B",
26:"A"
};
alpha[2]; // "Y"
alpha[24]; // "C"

var value = 2;
alpha[value]; // "Y"

Instructions

Convert the switch statement into a lookup table called lookup. Use it to lookup val and assign the associated string to the result variable.

Sollution

// Setup
function phoneticLookup(val) {
  var result = "";

  // Only change code below this line
var lookup = {
    alpha: "Adams",
    bravo: "Boston",
    charlie: "Chicago",
    delta: "Denver",
    echo: "Easy",
    foxtrot: "Frank"
  };


  // Only change code above this line
   return lookup[val]; 
}

// Change this value to test
phoneticLookup("charlie");

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