CODEWITHSUNDEEP
javascriptjson
Andy Ho
Andy Ho

Reputation: 179

Javascript, combine two array into a format

is it possible to turn two array into a specific format , because i need the specific format to create my D3 graph.

Actually, what i have , it's these two array,

date = ["sept,09 2015","sept, 10 2015","sept, 11 2015"]
likes = [2,4,5]

and i want to turn into this format

[{ date: '...', likes: '...'},
 { date: '...', likes: '...'}]

Upvotes: 2

Views: 45

Answers (3)

charlietfl
charlietfl

Reputation: 171679

Assuming they have the same length you can use Array.prototype.map():

var newArr = likes.map(function(item, index){
   return { date: dates[index], like: item };
});

Upvotes: 1

Praveen Kumar Purushothaman
Praveen Kumar Purushothaman

Reputation: 167162

You can do it in a simple way:

date = ["sept,09 2015","sept, 10 2015","sept, 11 2015"];
likes = [2,4,5];
final = [];

if (date.length == likes.length)
  for (i = 0; i < dates.length; i++)
    final.push({
      date: dates[i],
      likes: likes[i]
    });

Also, checking both whether they are of same size, to make sure it should not go into an array index out of bound.

Upvotes: 2

Mike Cluck
Mike Cluck

Reputation: 32511

One way would be to use a simple for loop.

var result = [];
for (var i = 0, len = date.length; i < len; i++) {
  result.push({
    date: date[i],
    likes: likes[i]
  });
}

Note that this only works if the arrays are of the same length. If they aren't you could still get the maximum possible by taking the minimum of the two lengths.

var result = [];
var length = Math.min(date.length, likes.length);
for (var i = 0; i < length; i++) {
  result.push({
    date: date[i],
    like: likes[i]
  });
}

Upvotes: 1

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