JavaScript - It’s a Real Language

http://clubajax.org/javascript-its-a-real-language/

by rvbyron • 16 years ago

34 35 16 years ago

pseudonym• 16 years ago

I think the "loose and flexible" aspect is why so many people think it's a joke. For the longest time, the only Javascript I learned was from online tutorials, and 90% of those were complete and utter crud, showing different ways of doing the same thing that were still acceptable because of how accommodating Javascript is with syntax errors. Because of the fact that no two tutorials were the same, I never wanted to touch Javascript.

Later I picked up an O'Reilly book about "the good bits" of Javascript and enjoyed it immensely, but the amount of parseable cruft out there doesn't help up-and-coming JS coders in the slightest.

16s2• 16 years ago

We'd be better off without JavaScript embedded into Websites and PDF files. Granted, it adds functionality, but if you've ever tried to keep hundreds of Microsoft Windows PCs from being infected with malware, you'd understand. Things are simpler without it.

cryptoz2• 16 years ago

Just because one OS has security problems doesn't mean the world would be better off without this amazing functionality.

I think JavaScript embedded in websites is one of the most important abilities in the web today. It's critical to the way nearly all modern applications are written and it allows for extremely fast and rapid development of scalable powerful applications.

Awesome, no?

kenjackson2• 16 years ago

While Javascript is better than nothing, I'm one of the few proponents left of a strong, lightweight, maybe standardized, plugin model. I'd rather write with an appropriate language for the task at hand.

If my site would best be served by Lisp, or Haskell, or Java, or Javascript, or C#, or Python... let me decide. It just feels like we've entered this world that everything has to be Javascript, if its appropriate or not.

gorog• 16 years ago

And leave the Web as a set of static pages like in the nineties? Web applications are desirable, if only because they're multi-platform. Javascript is what saved us from those slow and not so safe Java applets (and Flash, Silverlight, which would be everywhere without Ajax).

Anyway, malwares would have spread through downloaded executables (e-mail attachments, etc). Is Javascript even helpful to most malwares?

16s2• 16 years ago

Is Javascript even helpful to most malwares?

Yes, very much so. Adobe PDF reader's JavaScript ability is the reason it's dangerous to open PDF files anymore. They issue a new patch once a month it seems and are working on a sandbox as the problem cannot be contained. Without JavaScript embedded in the PDF files, this would be a much more manageable issue.

InclinedPlane3• 16 years ago

Realize that the answer to an absence of Javascript would probably be more Flash and ActiveX, which is actually a much worse security problem.

endtime• 16 years ago

I didn't really appreciate JS when I had to use it for a school project. But, believe it or not, I gained an appreciation for it via CoffeeScript. Replacing the syntax with something more concise showed me that the underlying fundamentals of the language are pretty clean.

hnal943• 16 years ago

I had a similar experience learning to use mootools. It got rid of so many of the ticky-tack compatibility problems and just let me work on the problem.

RyanMcGreal• 16 years ago

I know it's been said many times, but Crockford's Javascript: The Good Parts is a wonderful approach that squeezes maximum value, maturity and robustness out of a mostly-good language with some spectacularly bad bits.

MartinCron• 16 years ago

Going to chime in here. JavaScript: The Good Parts isn't just one of those crazy-useful technical books. It's also just good reading, if that makes sense.

It's also very short. A total breath of fresh air in an industry where so many publishers have a "bigger is better" mentality.

jianshen• 16 years ago

+1 for good Javascript teaching

I wish there was a single curriculum that most JS developers were exposed to and can point to.

Every JS developer I meet has a different way of doing encapsulation and abstraction. This makes it terribly confusing for developers new to the environment who just want to know "the typical way" you do XYZ.

InclinedPlane3• 16 years ago

Javascript has 3 serious, fundamental problems. The first is that it's a prototypal language that's been forced into looking like a class-based OO language. This leads people to confusion and frustration, much the same as if you were making a burrito and someone replaced your ingredients with pita bread and hummus. If you try to work against the grain by imagining that JS is just another class-based language you will end up thinking that it's some crazy mutant language that doesn't make sense. If you go into it understanding the paradigm and how to make the best use of it you'll get much better results.

The second major problem with Javascript is that it was prematurely standardized due to excessive pressure to ship during development, and thus has a lot of little mis-features and defects in the core language that haven't been fixed due to concerns about breaking backward compatibility. Luckily it's generally possible to avoid these areas of the language without having to compromise your code so it's just a matter of keeping to good practices and of knowing what to avoid.

The third problem is that Javascript is primarily a web technology where it is married to the DOM, and historically browser DOMs have been a mess: non-standardized, buggy, sometimes slow.

Overall the result is a language with a few landmines that need to be tiptoed around but that is still very solid in its fundamentals. Compare that with many other languages that are more polished and yet fundamentally limited in significant ways (such as Java's lack of closures, for example).

The wonderful thing about JS is that because of its expressiveness, power, and advanced featureset, using the language properly becomes a potent self-reinforcing feedback loop, jQuery is one of the better examples of this.

orangecat• 16 years ago

Exactly right. I don't understand why there can't be a Javascript 2.0 that fixes its ridiculous misfeatures, and that you opt-in to with <script language="js2"> or something. So browsers would have to include two interpreters, but they're so bloated as it is I doubt it would be noticeable.

silentbicycle• 16 years ago

If you want to see what Javascript could have become without premature standardization, check out Lua (http://www.lua.org/). It doesn't get that much hype because it isn't married to the web, but it's popular in other niches, particularly the gaming industry. It's designed for scripting C / C++ applications, but also works well as a standalone language.

It's like a tasteful mix of Python and Javascript, but without any of the fat. It's very dynamic, has a small, extremely portable, and high-performance implementation (in a ~200k C library), has prototype-based objects, a JSON-like native datatype, and a better JIT (http://luajit.org/) than any JS implementation thus far.

Recommended introduction: Ierusalimschy's _Programming in Lua, 2nd ed._ (http://www.inf.puc-rio.br/~roberto/pil2/).

OmarIsmail2• 16 years ago

It's my personal opinion that Javascript is the language of the future. One could argue it's actually the language of today with everything becoming a rich Web App. I'm not a hardcore CompSci language expert by any means - have just used dozens of languages over the years - and Javascript has become my favourite language by a large margin. The simplicity and flexibility of it is just so appealing. It's the GTD done of programming languages. I should also add that I don't have too much experience with functional languages just a little dabbling in Scheme and Lisp.

Cushman2• 16 years ago

You should try CoffeeScript.

OmarIsmail2• 16 years ago

One of the things that I absolutely love about Javascript is that it doesn't need to be compiled. Most of people's time is actually spent debugging and not core coding. Therefore I highly highly value the "code-deploy-test" loop being as tight and friction free as possible. And with Javascript that loop doesn't get much tighter.

powrtoch• 16 years ago

Sounds like Atwood's Law: http://www.codinghorror.com/blog/2007/07/the-principle-of-le...

contextfree2• 16 years ago

As I think some commenters noted, he's badly misunderstood what the W3C folks meant by "least power". JavaScript doesn't remotely qualify.

jbarham• 16 years ago

Speaking of JavaScript, O'Reilly's Ebook Deal of the Day for today is the guide to Google's Closure JavaScript suite for $15. See http://oreilly.com/catalog/9781449381875/ and use the discount code DDSDF. (I am not affiliated w/ O'Reilly.)

jganetsk• 16 years ago

I'm going to use this opportunity to plug Google Apps Script, an awesome server-side JavaScript platform.

http://code.google.com/googleapps/appsscript/

brianobush• 16 years ago

Can I run JS from the command-line yet? e.g., jsrun code.js

InclinedPlane3• 16 years ago

You have been able to for a long time. On windows there's windows scripting host which includes JS support. On *nix there's no standard way of doing it but there are plenty of options for rolling your own though node.js is becoming a de facto standard.

carussell• 16 years ago

  16:30:33 spade@ruta-corsica:~$ passgen
  jygugiy5
  16:30:35 spade@ruta-corsica:~$ file `which passgen`
  /home/spade/bin/passgen: a /home/spade/bin/js -ws script text executable
  16:30:40 spade@ruta-corsica:~$ head -n 3 `which passgen`
  #!/home/spade/bin/js -ws
  /* passgen - configurable password generator
   * Copyright 2005 Colby Russell

niels• 16 years ago

This dude is late to the party. This seems to me like something that could have been written two or three years ago. Lots of developers have for a long time appreciated the powerful features and expressiveness of JavaScript.

JavaScript - It’s a Real Language

Related Stories