I am currently studying knockout.js, and I feel that I am pretty good at it. I thought I would share with you a few tutorials that have helped me along the way.
Knockout.js is a javascript library that allows you to use the “jquery” or “jquery-like” framework to create powerful JavaScript code. The best way to introduce knockout.js to your friends and family is with a tutorial.
I had a lot of trouble getting started with knockout.js, and I’m not just saying this because I’m a nerd. I’ve had some really bad advice about it. I remember when I was first trying out knockout.js in a small project I was working on, I was told to use a single function for all the different event types. And I did that, and it worked. But then I found myself using something like var foo = function() {….
Then I started to hear about the problems of using a global function for all different types of events. And then I found myself writing a lot of code that had very confusing global variables. And then another problem occurred. I forgot about the global variables. And I ended up wanting to go back to the way I originally did things. That was a really bad decision.
The best way to avoid global variables is to make them very short, very local functions that can be called without having to worry about globals. This is what knockout does. It’s also what jQuery does, but it’s much simpler because it doesn’t have all the issues. Knockout adds an event to the view model instead of having to worry about how the event propagates through the DOM.
Knockout is a library, but it’s really simple. Its really just a way to make javascript’s global variables more readable. In the global variables example, I didn’t have to worry about the event propagating through the DOM. I could just be doing things like onNext, onComplete, onNext, onNext, and so on.
Knockout gives you a lot of options to do things like attach and remove events, which is one of the things that makes it so easy to use. But one of the main features I like about knockout is that it makes the code way simpler if you want to do something like have your viewmodel have the same functionality as an observable in angular. Knockout is just an abstraction layer over the event system that angular uses.
Knockout is very simple. It lets you create something like a simple array of objects, which is kind of like a list of functions. But it also lets you add lots of jQuery-like behavior to a list of functions called observables. It’s really similar to observables in angular, but knockout lets you do the jQuery work with it. As for my favorite thing knockout has going for it, it makes it so easy to use.
I don’t know exactly when knockout was created, but I know its been around forever. I used it in one of my courses to demonstrate a basic event system with a few custom observables, but it’s been around since the beginning.
Knockout also has a very useful property called viewModel. It allows you to separate your functionality from your view model. It also allows you to use observables with it.
Would you like to share your thoughts?
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