A method is a function that is a member of an object. A property is a value or set of values (in the form of an array or object) that is a member of an object. JavaScript supports four kinds of objects: Intrinsic objects, such as Array and String. Objects you create. Host objects, such as window and document.
Definition of reductive for English Language Learners. : dealing with or describing something complicated in a simple or too simple way.
n. 1  The breaking up of the component parts of a substance, as in catabolism or decay. 2  The disorganization or disruption of mental processes in mental illness. 3  The natural or induced transformation of an atomic nucleus from a more massive to a less massive configuration by the emission of particles or radiation.