Jquery Object Properties Value Average

I have the following object: rating { atmosphere: 85 cleanliness: 91 facilities: 91 staff: 85 security: 94 location: 78 valueForMoney: 85 }

Solution 1:

there is no jquery function for this. you have to do it manually

var count = 0;
var sum = 0;
$.each(rating, function(k, v){
   count++;
   sum += v;
});

var average = sum / count;

Solution 2:

You can loop through the object's properties to get the total value, then divide that by the number or properties in the object itself:

var total = 0;
for (var key in json.rating) {
    total += json.rating[key];
}
console.log(total / Object.keys(json.rating).length);

Working example

Solution 3:

The object you posted is invalid, I have modified it to a valid object, here is a working snippet

var json = {
  rating: {
    atmosphere: 85,
    cleanliness: 91,
    facilities: 91,
    staff: 85,
    security: 94,
    location: 78,
    valueForMoney: 85,
  }
}
var average = 0;
var counter = 0;

$.each(json.rating, function(key, value) {
  average += value;
  counter++;
});

document.write(average / counter);

<scriptsrc="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

Solution 4:

Please have a look at this:

var rating  = {
     atmosphere: 85,
     cleanliness: 91,
     facilities: 91,
     staff: 85,
     security: 94,
     location: 78,
     valueForMoney: 85
    };

var totalCount = 0;
var totalSum = 0;
for(var key in rating){
  totalCount++;
  totalSum += rating[key];
}

$(".avg").text(totalSum/totalCount);

<scriptsrc="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
Average is: <divclass="avg"></div>

Solution 5:

You could sum the values and divide it by the length of the properties.

var rating = { atmosphere: 85, cleanliness: 91, facilities: 91, staff: 85, security: 94, location: 78, valueForMoney: 85 },
    keys = Object.keys(rating),
    average = keys.reduce(function (r, k) {
        return r + rating[k];
    }, 0) / keys.length;

document.write(average);