In knockout.js, why "this" is being assigned to "self"? [duplicate]

Question

I am working through Knockoutjs tutorial. And one thing seems weird to me. I am currently in part 2:

http://learn.knockoutjs.com/#/?tutorial=collections

And in this part in every "class", "this" is being assigned to "self".. it was not the case in the first one?

Why would someone do this? Is it just whoever wrote that particular code has python addiction, or is there some actual benefits to this?

Answer 1

Since "this" refers to different objects depending on context, one can save a reference to a particular object by assigning it to another variable, for example "self".