Homework 3

[jeremypeter]

Do this

var firstNames = [
    ' chinMayi ',
    'meLanie ',
    'aManda ',
    'milijAna    '
];

var lastNames = [
    'chauHan ',
    ' schmiTZ',
    'Rineer',
    'arsEniJevic'
];

/**
 * 
 * Takes an array of first names and last names and creates
 * a new array of objects that has values cleaned and 
 * in object form
 * 
 * @param {array} firstNames - array of first names
 * @param {array} lastNames - array of last names
 * 
 * @return new array of objects
 * 
 * @example
 * console.log(createNameObject(firstNames, lastNames));
 *
 * returns the following:
 * [
 *      {
 *          firstName: 'chinmayi',
 *          lastName: 'chauhan'
 *      },
 *      {
 *          firstName: 'melanie',
 *          lastName: 'schmitz'
 *      },
 *      {
 *          firstName: 'amanda',
 *          lastName: 'rineer',
 *      },
 *      {
 *          firstName: 'milijana',
 *          lastName: 'arsenijevic'
 *      }
 *  ]
 */
createNameObject(firstNames, lastNames){
    // Add Logic
}

// Execute `createNameObject`
var cleanedNames = createNameObject(firstNames, lastNames); 

console.log(cleanedNames);

[jeremypeter]

Extra credit

Below we just received an array of products from Shopify's API. We now need to scrub the data and make it match the object that our custom service needs to consume.

var productsSold = [
    { 
        brand: 'Guchee',
        total: '90.34',
        tag: 'purse'
    },
    { 
        brand: 'Louie Veeton',
        total: '12.99',
        tag: 'purse'
    },
    { 
        brand: 'Guchee',
        total: '5.34',
        tag: 'belt'
    },
    { 
        brand: 'Tommy Heelfiger',
        total: '34.66',
        tag: 'watch'
    },
    { 
        brand: 'Mycol Coors',
        total: '3.33',
        tag: 'belt'
    },
    { 
        brand: 'Guchee',
        total: '23.20',
        tag: 'purse'
    }
];

// Create a function that categorizes each `brand` in an object.
// Within each brand object, categorize by `tag` and within that object
// calculate the total number of items sold.
// Final result should look something like the following:
// NOTE: the order of the properties doesn't matter
// {
//     guchee: {
//         purse: {
//             totalSold: 113.54
//         },
//         belt: {
//             totalSold: 5.43
//         }   
//     },
//     tommy_heelfiger: {
//         watch: { 
//             totalSold: 34.66 
//         }
//     },
//     mycol_coors: {
//         belt: { 
//             totalSold: 3.33 
//         } 
//     },
//     louie_veeton: {
//         purse: {
//             totalSold: 12.99
//         }
//     }
// }

[jeremypeter]

Solution 1 using .forEach()

var productsSold = [
    {
        brand: 'Guchee',
        total: '90.34',
        tag: 'purse'
    },
    {
        brand: 'Louie Veeton',
        total: '12.99',
        tag: 'purse'
    },
    {
        brand: 'Guchee',
        total: '5.34',
        tag: 'belt'
    },
    {
        brand: 'Tommy Heelfiger',
        total: '34.66',
        tag: 'watch'
    },
    {
        brand: 'Mycol Coors',
        total: '3.33',
        tag: 'belt'
    },
    {
        brand: 'Guchee',
        total: '23.20',
        tag: 'purse'
    }
];

var categorizedProducts = {};

productsSold.forEach(function(product){
    var brandName = snakeCase(product.brand); //

    if(!categorizedProducts[brandName]) {
        categorizedProducts[brandName] = {};
    }

    if(!categorizedProducts[brandName][product.tag]) {
        categorizedProducts[brandName][product.tag] = {};
    }

    if(!categorizedProducts[brandName][product.tag].totalSold) {
        categorizedProducts[brandName][product.tag].totalSold = 0;
    }

    categorizedProducts[brandName][product.tag].totalSold += parseFloat(product.total, 10);
});

function snakeCase(str){
    str = str.replace(/\s/g, '_').toLowerCase();
    return str;
}

[jeremypeter]

Solution 2 using .reduce()

var productsSold = [
    {
        brand: 'Guchee',
        total: '90.34',
        tag: 'purse'
    },
    {
        brand: 'Louie Veeton',
        total: '12.99',
        tag: 'purse'
    },
    {
        brand: 'Guchee',
        total: '5.34',
        tag: 'belt'
    },
    {
        brand: 'Tommy Heelfiger',
        total: '34.66',
        tag: 'watch'
    },
    {
        brand: 'Mycol Coors',
        total: '3.33',
        tag: 'belt'
    },
    {
        brand: 'Guchee',
        total: '23.20',
        tag: 'purse'
    }
];

var groomedObject = productsSold.reduce(function(obj, product){
    var brandName = snakeCase(product.brand);
    obj[brandName] = obj[brandName] || {};
    obj[brandName][product.tag] = obj[brandName][product.tag] || {};
    obj[brandName][product.tag].totalSold = obj[brandName][product.tag].totalSold || 0;
    obj[brandName][product.tag].totalSold += parseFloat(product.total, 10);
    return obj
}, {});

function snakeCase(str){
    str = str.replace(/\s/g, '_').toLowerCase();
    return str;
}