This is a blog about extending Qlik Sense. Qlik Sense has excellent support for using Qlik objects in your own web page or app. With the tools supplied with the product you can drag-and-drop charts from your Qlik app into a web page and get it injected into basically any web page without programming. That is not what this blog is about.
Instead I will try to go a bit deeper. Probably everything in this blog will be based on actually programming, that is writing, mainly Javascript, code. Even if you can get a web page up in minutes, without writing a line of code, when you try to do things a bit more advanced you will soon need to understand how to actually program the stuff. And even if you start out with the autogenerated pages from Qlik Sense mashup editor, it will be useful for you to understand the code created for you.
Looking at the material I have for this blog I realize that some of it (possibly all of it) is not easy. You need to know a bit about programming and have an interest in learning more. You probably also need to know something about Qlik.