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up vote 0 down vote favorite

I am values like below

var months = ["January","February","March","April","May","June","July","August","September","October","November","December"];

 var objects = {
        April:0,
        August:4182,
        December:0,
        February:0,
        January:1,
        July:2,
        June:0,
        March:0,
        May:0,
        November:0,
        October:0,
        September:1518
    }

How to sort the objects based on the months array.

Any help will be helpful.

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2  
your objects is not valid, = should be :. –  Chips_100 Sep 19 '13 at 9:15
2  
Objects have no order. –  elclanrs Sep 19 '13 at 9:16
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3 Answers

up vote 2 down vote accepted

Try with:

var output = [];

for (var k in months) {
  var month = months[k];
  output.push({name: month, value: objects[month]});
}

It will returns you ordered list of objects that contain name and value keys which have proper month name and its value.

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easy and clean solution. I hope this is what OP was looking for, as I understood it the same way. +1 –  Chips_100 Sep 19 '13 at 9:21
    
@hsz Thanks ..... –  karthick.k Sep 20 '13 at 5:17
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up vote 1 down vote 
var values = [];

for(var i = 0; i < months.length; i++) {
    vals.push(objects[months[i]]);
}

This way you get the object properties' values ordered by the months array.

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up vote 0 down vote

You can't sort the properties in an object, because the order of the properties is not maintained. If create an object like that, then loop out the properties, you will see that the properties may not be returned in the same order that you put them in the object, and different browsers will return the properties in differend order.

Make the object an array, so that it can maintain the order of the values, and make the lookup array an object so that you can efficiently map a string to a numeric value:

var months = {
  January: 1,
  February: 2,
  March: 3,
  April: 4,
  May: 5,
  June: 6,
  July: 7,
  August: 8,
  September: 9,
  October: 10,
  November: 11,
  December: 12
};

var objects = [
  { name: 'April', value: 0 },
  { name: 'August', value: 4182 },
  { name: 'December', value: 0 },
  { name: 'February', value: 0 },
  { name: 'January', value: 1 },
  { name: 'July', value: 2 },
  { name: 'June', value: 0 },
  { name: 'March', value: 0 },
  { name: 'May', value: 0 },
  { name: 'November', value: 0 },
  { name: 'October', value: 0 },
  { name: 'September', value: 1518 }
];

Now you can sort the array using the object:

objects.sort(function(x,y) { return months[x.name] - months[y.name]; });

Demo: http://jsfiddle.net/7eKfn/

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