Convert Object Array to Array Object: Javascript

Question

obj = {'a':['hello', 'hie'], 'b':['World', 'India']}

To

array = [{'a':'hello','b':'World'}, {'a':'hie','b':'India'}]

Best way to convert this or any build-in method for this conversion using JQuery.

• T.J. Crowder: "Best way to convert this or any build-in method for this conversion using JQuery." Write code looping through the properties of the object and building up the result. There isn't a shortcut.
• user1726343: Your mapping isn't that well defined. Please provide a few more examples and/or elaborate.
• PhiLho: jQuery, now fabled as the Universal Swiss Army Knife of Web development... :-)

Answer 1

Try this Code,

obj = {'a':['hello', 'hie'], 'b':['World', 'India']}
var key = Object.keys(obj);
array = [];
for (var i = 0; i < obj['a'].length; i++){
 o = {}
 for (k in key){
 o[key[k]] = obj[key[k]][i]
 }
 array.push(o)
}

• Bergi: Don't use a for-in-loop for the key array. Also, some semicolons would be nice.

Answer 2

var obj = {'a':['hello', 'hie'], 'b':['World', 'India']};
var array = [];
for (var prop in obj)
 for (var i=0; i<obj[prop].length; i++) {
 var o = array[i] || (array[i] = {});
 o[prop] = obj[prop][i];
 }

No jQuery needed. With jQuery, it might look like this:

var array = [];
$.each(obj, function(prop) {
 $.each(this, function(i) {
 var o = array[i] || (array[i] = {});
 o[prop] = this;
 });
});

• slower and less readable. Do not use.