Empty Object in Coffeescript

Question

I want to make an if statement to check if an object is an empty object or not.

By empty object I mean if I do console.log(object) it prints out {}.

How do I do this?

Answer 1

myObject = {}
if Object.keys(myObject).length == 0
    # myObject is "empty"
else
    # myObject is not "empty"

Answer 2

This function might work for you :

is_empty = (obj) ->
    return true if not obj? or obj.length is 0

    return false if obj.length? and obj.length > 0

    for key of obj
        return false if Object.prototype.hasOwnProperty.call(obj,key) 

    return true

#Examples
console.log is_empty("") #true
console.log is_empty([]) #true
console.log is_empty({}) #true
console.log is_empty(length: 0, custom_property: []) #true

console.log is_empty("Hello") #false
console.log is_empty([1,2,3]) #false
console.log is_empty({foo: 1}) #false
console.log is_empty(length: 3, custom_property: [1,2,3]) #false