How to detect if the backbone.js model is cleared

Question

js I wonder on how to detect if the model is cleared or empty?

if I set the model

model.set({name:'this is a test', id:1});

and clear it

model.clear();

Answer 1

You can test for this by doing the following:

if ($.isEmptyObject(model.attributes)) {
    // model is cleared or empty
}

Note that you cannot rely on the model.isNew() function as it does not verify whether the model has had all of its attributes removed.

You can see a working fiddle here.