Question

My backbone.js model has a json object in defaults like this:

test: { 
    testArr: [{
        obj1: value1,
        obj2: value2
    }]
}

How can I update just a part of the model for eg: test.testArr[0].obj1 using this.model.set()?

Answer 1

You’ll need to extract the array from the properties, update it, and inject it back in. Assuming your model is called model, that would look like:

var newTestArr = model.get('testArr');
newTestArr.obj1 = 'foobar';
model.set({testArr: newTestArr});