Question

I have the following JSON object array in javascript :

  [{ "AuthorName" : "Abc", "BookName" : "book-1" }]
  [{ "AuthorName" : "Abc", "BookName" : "book-2" }]
  [{ "AuthorName" : "Abc", "BookName" : "book-3" }]
  [{ "AuthorName" : "Abc", "BookName" : "book-4" }]

Now I want to create a single JSON object from the above JSON objects array. The newly created single JSON object contains 2 properties: AuthorName and BooKName array. I am trying to achieve something like this:

{ "AuthorName" : "Abc", "Book" : ['book-1', 'book-2', 'book-3', 'book-4'] }

Now my question is, how can I achive this efficiently and with writing minimum code in javascript?

Answer 1

var obj = {};
for(var i=0; i<myArray.length; i++) {
    if(obj[myArray[i].AuthorName] == null)
        obj[myArray[i].AuthorName] = [];
    obj[myArray[i].AuthorName].push(myArray[i].BookName)
}