Technical KnockOut

The other day I was working on a little demonstration of using OWIN to serve local files, use dependency injection, and server Web API in a modern SPA (Single Page Application).

Almost as an afterthought, I decided to use KnockoutJS and jQuery from a minimal HTML page. This was overheard by colleagues, and a firestorm erupted...

"You should have used AngularJS instead; It would take less lines of code."

So I pulled down AngularJS and changed my demo to placate the angry threats wishes of the religious zealots thoughtful developers at my desk.

For the record, this is the code I wrote using KnockoutJS and jQuery:
and here is the AngularJS version:

Trying to provide equally readable formatting, the Knockout solution takes one less line of code even though you are loading two JavaScript libraries. The only fair way to count lines is to count semicolons. Both have three. That's a tie.

What about the size of the libraries being loaded. Well, Angular includes a jqLite, a stripped down version of jQuery. It takes 50.5 kb. KnockoutJS takes 20.9 kb and jQuery 28.9 kb for a total of 49.8 kb. You can't say either one has much of an advantage there

I'm not going to argue the merits of one library over another. I think they serve different purposes. For the purposes of my very simple demo, I have a hard time seeing where either has any real advantage.

So, the answer is... do whatever makes you (or the barbarians at your gate) the most happy.

If you want to look at it, here is a complete GitHub repository with my solution.

Comments

Post a Comment

Popular posts from this blog

MSSQL Statistical Z-Score

Computing the z-score of individual values in SQL Server is not a built in function (although average and standard deviation are). The z-score tells us how far off from the average value the individual values are. The following function computes the z-score: for a table named [data] having an [objectId] and [score] fields. SELECT [D].[objectId], [D].[score], [E].[avg_score], [E].[stdev_score], ([D].[score] - [E].[avg_score]) / [E].[stdev_score] as zvalue FROM [data] D CROSS JOIN (SELECT Avg(CAST([score] as float)) as [avg_score], StDevP([score]) as [stdev_score] FROM [data] ) E ;
Read more

IBM x335 and Windows 2008 installation

I love the fact that IBM stops supporting its hardware long before Microsoft does; this means that lots of top-tier companies have to decommission their *somewhat* old hardware and you can pick up a server cheap (or free) to play with at home. It may mean, however, that your installation mileage may vary. Such has been the case for my IBM x335 (of which I have three). I've been on a quest to do an installation of Windows Server 2008 on said boxen. (plural of ox is oxen, plural of box is...) How fickle a lover are antique hardware and modern operating systems? How doest thou vex me, let me count the ways... Windows 2008 only comes on DVD while an IBM x335 has only a CD and will not boot from USB. Windows 2008 will not install from any sort of DOS utility disk. So Bart's Network boot disk is out, likewise a network boot to anything based on DOS. The IBM x335 has an internal IDE that is used by its CD Rom. You can crack the case and use an internal DVD drive from some other comput
Read more

Database Projects, SQL Unit Tests, and TeamCity

Image
Continuous Integration  is a really good idea, especially when you are working with a team of developers. There are lots of tools out there that can help your team build better quality into your application. TeamCity by JetBrains is one such tool that has been around for awhile; specifically, it is the one that my company uses. Visual Studio has Database Projects   SQL Server Data Tools  to address some of the inconsistencies that developers face when using a database as a storage layer; Things like version control and consistent deployment. It also includes SQL unit tests , which fills a huge gap if any  of your logic is in the database. Many organizations moved away from logic in the database years ago because it was tricky (at best) to verify logic on the data tier, of course, they were also making changes directly to the database itself... but I digress. If you are using SQL Server Data Tools, and run your unit tests locally, it is a joy to behold. Your database is automatical
Read more