js-objects.md

Objects

1. Write a function analyzer that receives an object with fields name and age:

   analyzer({ name: "James Bond", age: 27 });

   and shows the following message on the console:

   Your name is James Bond and you are 27 years old.
   

2. Write a function transpose that receives an array of objects such as

   [
     { user: "jlopez", password: "1234" },
     { user: "pacof", password: "abcd" },
   ];

   and returns an object with two fields users and passwords containing all the users and all the passwords collected together preserving the order:

   { users: ['jlopez', 'pacof'], passwords: ['1234', 'abcd'] }

3. Convert a CSV file such as:

   name;age;weight
   james;27;85
   peter;32;56
   

   into a JSON file:

   [
     { "name": "james", "age": 27, "weight": 85 },
     { "name": "peter", "age": 32, "weight": 56 }
   ]

   (In the CSV, the header indicates the names of the fields, the following lines are the objects.)

4. Write the inverse conversion as the last problem, from JSON to CSV.

5. Write a function that, given an array of "fields" like:

   [
     { field: "name", value: "James Bond" },
     { field: "age", value: 27 },
     { field: "agentNum", value: "007" },
   ];

   returns and object with those fields and values. In the example, the returned object should be:

   { name: 'James Bond', age: 27, agentNum: '007' }

6. Write a function fieldNames that returns an array with the names of all
   the fields in an object given as the first parameter.