To count the number of objects in object literal using Jquery

Question

Code:

var animals = {
                    "elephant": {
                                    "name" : "Bingo",
                                    "age" : "4"
                                },
                    "Lion":     {
                                    "name" : "Tango",
                                    "age" : "8"
                                },
                    "Tiger":    {
                                    "name" : "Zango",
                                    "age" : "7"
                                }
                }

I want to count the number of objects using Jquery in this object literal.

Answer 1

You could use Object.keys(animals).length

Or

var count = 0;
for (var animal in animals) {
    if (animals.hasOwnProperty(animal)) {
        count++;
    }
}
// `count` now holds the number of object literals in the `animals` variable

Or one of many jQuery solutions that may or may not be the most efficient:

var count = $.map(animals, function(n, i) { return i; }).length;