var c = {
    name: 'The c object',
    log: function(){
        this.name = 'Updated c object';
        console.log(this);
        var setName = function(newname){
            // this now points to the global object
            this.name = newname;
        };
        setName('Updated again! The c object');
        console.log(this);
    }
}
c.log();

// To fix it we insert a new variable self and give it a reference to this
var d = {
    name: 'The c object',
    log: function(){
        var self = this;
        self.name = 'Updated c object';
        console.log(this);
        var setName = function(newname){
            // this now points to the global object
            self.name = newname;
        };
        setName('Updated again! The c object');
        console.log(self);
    }
}
d.log();