Get condition operator by EL

I'm using the following code to get condition object by rest api,this object have operator and response fields ,I need to use them in if condition statement like

if(response  condition.operator condition.response) 

condition.operator should be < , > or else ,So how to get condition operator by EL?

Full code

Conditions.get({id:id}).$promise.then(function(condition){          
  if(response  condition.operator condition.response){
    console.log("")
   }
 });