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up vote 1 down vote favorite

let's say I have two arrays:

  var  meals: ["breakfast", "lunch", "dinner"];
  var ingredients: [["eggs", "yogurt", "toast"],["falafel", "mushrooms", "fries"], ["pasta", "cheese"];

Is there an elegant solution to create an array of JavaScript objects which features:

var dailySchedule = {"breakfast" : ["eggs", "yogurt", "toast"],
                      "lunch": ["falafel", "mushrooms", "fries"],
                      "dinner": ["pasta", "cheese"]
}

I know it should be something with .reduce but I keep scratching my head how to do it...

share|improve this question
    
use a for(...) loop :) – BeNdErR yesterday
1  
JSON is text data, what you are after is plain JavaScript objects. – vlaz yesterday
up vote 3 down vote accepted

Sure, you could reduce it

var meals = ["breakfast", "lunch", "dinner"];
var ingredients = [
  ["eggs", "yogurt", "toast"],
  ["falafel", "mushrooms", "fries"],
  ["pasta", "cheese"]
];

var dailySchedule = meals.reduce( (a,b, i) => {
	return a[b] = ingredients[i], a;
},{});

console.log(dailySchedule)
.as-console-wrapper {top : 0}

share|improve this answer
up vote 0 down vote

Just use Array#forEach.

The forEach() method executes a provided function once per array element.

var meals = ["breakfast", "lunch", "dinner"],
    ingredients = [["eggs", "yogurt", "toast"], ["falafel", "mushrooms", "fries"], ["pasta", "cheese"]],
    dailySchedule = {};

meals.forEach(function (k, i) {
    this[k] = ingredients[i];
}, dailySchedule);        

console.log(dailySchedule);
.as-console-wrapper { max-height: 100% !important; top: 0; }

share|improve this answer
up vote 0 down vote

Another elegant way that i can think of is this;

var   meals = ["breakfast", "lunch", "dinner"],
ingredients = [["eggs", "yogurt", "toast"],["falafel", "mushrooms", "fries"], ["pasta", "cheese"]],
     result = Object.assign(...meals.map((m,i) => ({[m]:ingredients[i]})));
console.log(result);

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