1. Performance - my meek single core CPU and my tendency to open dozens of tabs at once often collide.

2. Privacy - I'm far too lazy to go the full mile, but if I can avoid most of the tracking, I certainly appreciate it. 'though I do keep some domains null routed anyway.

3. Security - after Flash, JS is the main source of security problems, and I don't mean just attacks on my machine, but also stuff like CSRF and such.

But the most important:

4. Peace of mind - JS is used to implement the most annoying parts of the web: popups (particularly those "inline" that can't be blocked by the browser), paywalls, preventing right-click, distracting real-time updates, etc. The web is just a calmer, saner place without JS, and I like that.

Install Ghostery and AdBlocker. They're available for most modern browsers and eliminate issues #2, 3 and 4.

http://www.ghostery.com/download

how does that help with security, i.e #3?

You can safely ignore that "audience" since they comprise 0.01% of a niche. They are vocal in sites like HN and Reddit and so on but the numbers are safely ignorable from a market standpoint.

If you want to spend your development effort in something worthy that will increase your audience, your should instead make sure your sites are available to people with disabilities. They are a far bigger share of the market (any market) and you will feel better by supporting them.

Unless your customers are paranoid computer geeks, you should completely ignore users who disable JavaScript. They are extremely few in number and they are already accustom to being ignored. If your site is worth viewing as you intended and are worth having as a customer, they will whitelist you.

The problem most sites have is that they don't even attempt to convince users who block JavaScript. Too many devs rely on JavaScript to do even the most basic layout and end up throwing a blank screen saying "This site requires JavaScript".

I don't expect developers to go out of their way to make the site work perfectly for me but I need to see something to convince me that it is worth a chance.

Exactly this. Arriving at a nice-looking site with good content would convince me to whitelist, but I'm going right back if things get too blinky, flashy, or generally annoying.

And hence, for most small businesses, I'd contest that you are not a customer worth having.

Most small business aren't rolling their own website. They are contracting the work out or just buying a prepackaged product from someone. If that person's work is so shoddy that I can't see anything about them, well then I'm glad I cannot possibly be a customer.

I'm not asking people to go days out of their way to make their websites work perfectly for people who don't use JavaScript, but please use basic best practices for website layout so I can at least have some idea of what your website is about.

> I'm not asking people to go days out of their way

But you are. If you've made the design decision to support progressive enhancement, testing a fallback for each individual element being enhanced is a minimum marginal cost. If you've made the decision to simply require JavaScript, many tasks get substantially easier and you eliminate a large fixed cost as well as the small variable cost.

But let's say, for sake of argument, that any site could magically be made to work JavaScript-free by the wave of a wand and 15 minutes passage of time.

You're still too small of a minority to justify 15 minutes for most people. Several years ago, Yahoo generously identified you as approximately 1% of global visitors across all user agents. Now consider that most visitors come from a refer with some context, so you already have some idea about what content you'll be seeing. If you don't care enough to enable JavaScript, your probably unlikely convert. If 2/3 of you turn JavaScript on (also generous) and typical conversion rates are 20% (very generous), you're looking at about 0.1% of total visitors.

Furthermore, as you prove, the category of people who disable JavaScript deeply overlaps with the category of people who haphazardly call other people's hard work "shoddy". These people make annoying customers.

You're simply not worth it.

You are again missing my point. I'm not asking for the site to work in the sense that I can do even 5% of the intended functionality. I just want to be able to see something to sell me on why I should enable JavaScript.

Also 15 minutes to convert 0.1% could (and most likely will) still be worth it. There is no magical number for this. A myriad of factors come into play. You can't just issue a blanket statement that I am not worth it when you have no idea what I am worth or the worth greatly changes from site to site.

Requiring JavaScript for your website is not a deal breaker for me. Requiring JavaScript to see a single pixel of the website is what I am complaining about.

> Unless your customers are paranoid computer geeks, you should completely ignore users who disable JavaScript.

Hypothetical: CDN X is having problems, and your scripts don't load. Errors pop up everywhere. Do you:

a) realize that scripting can and will fail for anyone, and tailor a page to work without it;

or

b) continue to plug your ears and point to statistics?

I have scripting enabled, but block Google Analytics and various advertising hosts. Do I count as someone to be supported? Or am I irrelevant because I'm a minute statistic?

It's a mistake to view this as paranoia. I look for oncoming cars before I cross the street, and it's not because I think there's a driver out to get me specifically.

Yet you still cross the street.

I'd ask you if you always wear several blinking reflectors, but I fear that this analogy breaks down very quickly.

Due to a long, sad history of exploited security defects, I only run javascript from authors I consider both trustworthy and competent, and who have useful behavior to add to my browsers. Basically if you don't even realize your documents are unusable without scripting, I can't assume you're smart enough to avoid attacks via malicious third-party code.

It's also a good way to find out who cares about the web, which is eroding as authors give up publishing semantic markup at stable URLs in favor of content entombed within client/server style apps.

1. Effectively blocks all forms of annoying advertisement.

1.5. As well as all those stupid social featu... sorry, bugs.

2. Makes pages load and render faster on my already-slow-by-now 100Mbps net.

3. Browser uses several times less RAM.

4. More privacy.

And you lose nothing as it is very easy to whitelist domains using some kind of plugin.

i find it highly annoying if pages show different content on the same url. many bad sites with javascript do not update their url.

javascript is often used for no apparent benefit. my favourite (or shall I say anti-favourite) are websites that, when I click on an image thumbnail darker the main site, show some animation and then showing the bigger image. I have experienced it many times that disabling js would directly serve me the image and do so much quicker.

some online store I use pops up details for items when I mouse over. each time changing mouse focus. I can not get a simple list with all the details to use my browsers search function with. it also has no pagination but autoloads more items on the bottom. if I revisit the page (eg after looking at an image) I have to start at the beginning again.

javascript allows website to screw with my copying. hover the mouse on a Google result, the status bar shows the proper target. rightclick and copy to get some redirection shite instead.

phew, where do I stop...

disabling js also implicitly removes a lot of advertising, pop-up windows, always scrolling bars. when I have to use someone else's computer I often cannot understand how they stay sane.

Google steals my focus, I use backspace to navigate "back". on Google that leads to me removing characters on the search and the search automatically updating and adding more pages to the history to navigate back through.

javascript often leads to sites eating my CPU. I value my battery life and CPU temperature.

I use reddit a lot on a unreliable connection. I often happily vote, just to see later that javascript pretended my votes counted while in reality they never arrived at the other end.

javascript can be great for thing but it gets abused so much that disabling made me enjoy the web much more. if something does not work, well, chances are I was procrastinating anyways and won't miss anything important by closing the tab. I did not install flash for the same reasons.

if I have to enable js for something it is two keystrokes (in opera). I can also enable it per site very easily.

I agree with your sentiments here (except battery life, I use desktops). Javascript is the cause of nearly all my most hated "features" that websites use. Disabling it makes these websites better. Google does not try to out think you. Comment boxes do not highjack your browser's hotkeys. Websites do not tell you that you can't right-click.

The latest fad for thumbnail-image animation is especially infuriating. A plain link is easy. I can choose where I want it opened. I can easily toggle between a full-size image to one that fits my browser window. The worst offender in this regard even hijacked my middle click so I could not open the image in a new tab. It pushed me so far I actually went looking for instructions on compiling Firefox and looking to remove Javascripts knowledge of a middle mouse button. (I didn't get very far.)

Another almost equally infuriating feature is the infinite scrolling page. I hate them. They don't add any useful interaction.

The worst thing, though not directly caused by javascript, has got to be "visibility: hidden" and "display: none" style attributes. Websites love to hide things and sometimes entire pages behind them for no reason other than the fact that you can make something to click on something and have javascript show it. (Another thing I wanted to remvove from Firefox.) Some people directed me to Firebug which is great for deleting those attributes. I seem to recall Google+ doing this at its begining, now it shows me the page on the few occasions I go there.

In General I would say that the "marketing layer" of your site should be accessible without javascript.

Once a user registers and logs in to your web application I believe it is fair to require them to enable javascript in order to proceed.

However, if you don't need to create a full blown javascript web application then I recommend allowing your javascript to gracefully degrade so users can still use the site. In this case javascript best used to "enhance" the experience but shouldn't destroy the experience if it's disabled. Hope that helps.

Also, keep in mind that this also depends on the organization your working for. In the case of government websites with strict accessibility guidelines, sites need to work without javascript enabled because screen readers for the visually impaired have a hard time viewing dynamically generated content.

Or the "front page". Or some front interface such people are likely to encounter.

Give me a reason to trust your site. When the first thing it wants from me is to execute arbitrary code, well, usually I just say "no, thanks", unless I already have a pretty good reason (so, from a third party or prior knowledge of the site's ownership and maintenance) to trust it.

I'm fine being an edge case. I've seen too many examples of friends, coworkers, family exploited -- and put a lot of effort into cleaning up a few -- to waste my time and well-being on those bent on transforming the web from content to executable, particularly some "anonymous" executable.

I run NoScript because it provides the full feature set of FlashBlock, plus extra stuff. It's the easiest way to protect myself from flash/acrobat reader/java 0-day exploits, and not running tracking JS/ad JS is an extra perk on top of that.

I'm curious: how much of the web would you say is broken when you browse this way? Is there a difference between 'consumer' sites and 'pro' sites?

In my experience, it's hard to evaluate this with NoScript because you typically whitelist domains as you go. There is probably a Pareto distribution here... whitelisting a handful of domains will cover 80% of your web browsing. Once you get going, it's not very obtrusive... although I certainly have to temporarily enable or whitelist new sites every day, it's an automatic response at this point.

Often a site will link in lots of third-party javascript, and this is where NoScript gives you more flexibility. A lot of times it's easy to tell where the advertising and tracking code is coming from and leave those domains disabled. Sited usually work any way.

The worst thing about NoScript is when a "third-party" site itself uses third party (fourth party?) code, since NoScript does not seem to detect that. Of course this is a heinous practice, and it's disturbing how often it seems to occur. If I really have to use a site that does that, I typically pop into IE.

Most of the web works fine, in that the content is readable (which is really all I care about 90% of the time). Things like comments are often readable but rarely can be made without javascript. Twitter and blogger are the worst offenders in terms of no content whatsoever without javascript (I have twitter whitelisted but not blogger, and will often not bother to temporary whitelist it if I follow a link to it). I usually wind up whitelisting the bare minimum to get the features I want enabled on websites I frequent.

With JS on, my laptop idles at ~30% CPU use and the battery melts; with it off, it idles at ~3% and the battery last much longer.

I used Opera from version 8 to 10 because it let me quickly enable/disable Flash and javascript on a global basis. Then I found NoScript, with its fine-tuning options, and moved definitely to Firefox. It's not as annoying as some people think, just 1 or 2 clicks on a menu and reload if I really want to see the page.

I use private browsing for the privacy paranoia. No need to block cookies. I block JS and Flash mainly to protect from buggy sites that thrash CPU and memory.

EDIT: also, it has surrogate scripts to fix some sites, for instance it removes clutter from Google Search links. And ABE has almost the same functionality as RequestPolicy.

I use RequestPolicy to block requests to other domains, which often prevents various JavaScript files from being loaded. This is done in order to impede companies like Google, Facebook and others tracking my web browsing on pretty much every website in existence. Third parties don't need to be informed of the pages I visit.

A side benefit is that many annoying ads are blocked, in exchange for some pain when visiting new sites with separate domains hosting their CSS, images and other assets.

I do it because it reduces my attack surface by quite a bit. There have been many bugs mitigated by having no JavaScript.

All you really need to do on your site is to use a few noscript tags to send people a message saying that the site requires JavaScript to function and asking them to turn on JavaScript or whitelist your domain in NoScript.

I have occasionally in the past - pages are often far more responsive without it. Generally that's due to blocking social widgets or crappy scroll handlers.

Is this really true ? I would love to experiment this if I can have longer laptop battery life by disabling JS.

CSS overrides to get rid of box shadows and rounded corners can also make a significant difference in scrolling speed. Essentially every browser out now lets you define a user css file, just include something like:

  * { box-shadow: none !important;
      border-radius: 0 !important; }

etc. YMMV, and you may have to include the corner / browser specific variants, I forget the details. Box shadows with a large spread still perform terrifyingly poorly in browsers, though small ones tend to be fast enough to not notice on modern machines.

Bookmarklets can do such things on a case by case basis, for any adjustments you don't want to commit universally (via user.css).

It's true, and you can.

>how concerned should I be about all my functionality existing without JS?

If something seems worth using and it requires JS to function correctly, I'll go ahead and enable JS. Unless you have projects in mind along the likes of jsFiddle, I don't think you have much to worry about.

As for why: it's nice to keep my laptop quiet and power-efficient when I'm simply browsing (especially if I'm not plugged in), a task that shouldn't be resource-intensive; it's an easy way for me to prevent potential malware when I'm using Windows.

Disabled people, for example (I am not, but I know several). Javascript is rarely a boon for accessibility.

Mark Pilgrim's "Dive into Accessibility" [1] is still a good primer on the subject, even though it's now a decade old.

[1] http://diveintoaccessibility.info/

I have never met a non-tech savvy user ever disable Javascript. Heck I've never met one that even knows what Javascript is. But a lot of tech savvy people I know do disable it mostly because of the whole "do not track" paranoia. I personally don't disable it as most sites use it and I like the functionality it provides.

If you're going to downvote this, I'd appreciate as to why.

I really appreciate all the feedback and thoughts. It's all quite informative. Thanks!

The only time I have ever disabled JS for a website, I've done it because that website broke some UI functionality I expect to work in every page. Most often, what some website does is disable right-click. They must think that is a foolproof way of "protecting" their content, and don't see it as an annoying block that makes people disable JS.

I did try an extension (for Chrome) that prevented sites from disabling right-click, but then out of nowhere it inserted an ad in a page I was viewing, so I removed that extension and went back to blocking JS.