EmberJS check array of properties

I have an Array of ember Objects [{"label":"input1_b1","isUsed":true},{"label":"input2_b2","isUsed":false},{"label":"input3_b3","isUsed":true},{"label":"input4_b4","isUsed":true}]

I want to check whether any of the object property of this Array is changed using Ember.

Is there any solution