Notes on software and the ideas behind it
Find the meaning
behind the code.
I’m Fred Yang. I write about software—how it works, why it behaves the way it does, and the ideas that make code easier to reason about.
Open the notebookWorking notes / 2026
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Architecture, reactivity, and the hidden relationships that shape frontend systems.
javascript
Class in ES6, Typescript, Angular2 and Angular1
ES6 class
Class was proposed in ECMAScript 4, which was abandoned, and ES5 does not have Class. Now ES6 is finalized and it has class.
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angularjs
Some thoughts on choosing JavaScript Framework
If you are reading this post, I don't have to tell you, you already know there are tons of JavaScript frameworks out there. Some of the popular ones are shown down here. You may...
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field note
Maybe the desire to control is the problem
I love to play tennis. Serve was the biggest weakness in my game. So I practice a lot, and now I am getting better and better in my serve. One of the most important...
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angularjs
service in angularjs
AngularJs is different from other JavaScript client-side framework in that it use dependency injection to manage its components. Although dependency injection is not a new method, in fact it has been very successful for...
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