I'm using requirejs together with the Require-CSS loader plugin by Guy Bedford. Both libraries work fine, but one nuisance I noticed is that the page gets rendered without the css being present yet which looks quite ugly (in particular together with Bootstrap which shows a toggle button in the far left). While this isn't a problem of either of these two libraries, I'd like to avoid it.
Can this be achieved by expediting the css loading (some parameter in requirejs or require-css?) or the rendering be suppressed until at least the css files have been retrieved?
One other solution would be to include the css files as normal references in the html markup, but I really would like to avoid this and stick with the requirejs methods.
A simple solution to this would be to set <body style="display:none;"> and use Javascript to set the body visible after the CSS has loaded. This technique is also used for some Angular applications.
Related
I am trying to reference a CSS file in my parent application from within an IFrame (I control both the application and the Iframe). My stylesheets are written in SCSS and then appear to be compiled to CSS and written into the HTML as in-line style elements in my document's <header> when I execute ng serve.
What is the correct way to access the CSS from within an IFrame? My first thought is to change the process to output actual CSS files rather writing the CSS in-line, but I'm not sure how that is configured. Perhaps I need to bring in a build tool like Gulp to handle this for me and take it out of angular's hands?
The inside of and the outside of the iframe are (for most intents and purposes) separate environments. CSS applied to one does not affect the rendering of the other.
Since the inside of the iframe is another page, you'd apply the CSS to that page as you would to any page.
The solution we decided to go with is to manually compile the SCSS and reference the CSS output from the IFrame. Eventually, this step should be automated (with something like Grunt or Gulp), but for now we are just doing this manually.
Any better solutions are welcome!
Is there any way to find which CSS tags and elements are related to the specific HTML page section?
For example: We have a large CSS file but few of elements are related to content in HTML classes, is there any way to find related elements and remove other parts?
How large is the CSS file? I can't think of anything else than splitting it to multiple libraries and then including a library in your page if it's required.
For example, if the page has a slider then it will have a CSS link to slider.css this might not be ideal when you send too many HTTP requests so you might embed the library as internal <style> CSS. I've seen many WordPress theme developers use that technique.
This shouldn't be a problem since minification and Gzipping reduce the filesize drastically and once the file is cached your users wouldn't need to wait extra time to load your next pages.
For Chrome
In the Chrome DevTools, there is an Audits tab that will allow you to run a Web Page Performance audit and see a list of unused CSS rules :
For Firefox
You could install one of these add-ons :
CSS Usage for Firebug
Dust-Me Selectors
CSS Usage
Dust-Me Selectors
I don't think there is. It would be really hard to do this, too, because your system could build up a page by including 500 different files of different languages. How could such a program know which of your files is included where and under which conditions?
The thing that I think comes closest would be using your DevTools to see which styles apply to which element and maybe by hand or in an automated way create a list of which CSS rules apply to which end-page (for example which URL endpoint) element. But! Even then it would be hard, because it would be really hard for a program to find out which styles are dynamically added to elements (for example Javascript could add/remove classes when a user performs a certain action).
I have been tasked to alter the design of a web application build around/utilizing jQuery Mobile, so that it fits a desktop browser better. I don't want to just remove all jQuery Mobile right away, but rather do the transition over time. The whole web application is using one page with a bunch of subpages, so I've made a new page using the same subpages for the desktop version, since this allows me to use different css files for the page.
My problem is that all the css I apply to the 'non-mobile' pages, gets overridden by jQuery Mobile (a bunch of css files). As I said I don't actually want to just remove these css files all at once, since I would be left with a raw html page without pagetransitions between subpages etc. - I might even want to keep some of the jQuery css in the long run, like the header for instance.
The main problem I see right now, is that a lot of the elements gets given class attributes like ui-btn, ui-select etc. without me actually declaring that in the html. This means that even thought I have a css file that defines how a button should look, jQuery Mobile somehow adds ui-btn and a bunch of other things to the class attribute at runtime - ultimately overriding my .button class or ending up with some sort of mix.
My question is quite generic, as I have a LOT of code and have no idea what to reference; how do I make sure my elements only gets styled by the classes I specifically assign?
Essentially I want to keep my jQuery Mobile, but have stuff like ui-btn as a standard css class selector (instead of this magical thing that ALL buttons apparently inherit from by default), so I would have to actually declare class="ui-btn" for the element to inherit that styling.
Let me know if this is unanswerable without some code references, I was just hoping for some general and generic tips :)
Unlike other jQuery projects, such as jQuery and jQuery UI, jQuery Mobile automatically applies many markup enhancements as soon as it loads (long before the document.ready event fires). These enhancements are applied based on jQuery Mobile's default settings, which are designed to work with common scenarios. If changes to the settings are needed, they are easy to configure.
When jQuery Mobile starts, it triggers a mobileinit event on the document object.
Try finding out where that happens in your code, and possibly stop it from happening in the case where you're in a desktop browser.
EDIT: It is most likely done in your jquery-mobile.js file, and usually scripts are linked as follows:
<script src="jquery.js"></script>
<script src="custom-scripting.js"></script>
<script src="jquery-mobile.js"></script>
Try altering this order, so your custom scripts are loaded after jquery-mobile.
link you css files after JQuery mobile files and use !important on your css to force the browser to use them like:
color: red !important;
I want to edit a html template to create a simple version for my need. I delete some ; but is there a tool to remove unused classes from CSS or I need to remove the manually?
For example, <div class="something"> is not used in my html; but still I have .something {} in my css file and make my css heavy. Currently, I delete unused classes from CSS one by one manually. I wonder if there is a way to delete any class in CSS which is not referenced in html!
Check out something like http://unused-css.com/. If you pay for it, you get to have it crawl your site and create a clean version for the entire site.
If you want a browser-based solution, try the Firefox plugin CSS Usage. You can open up Firebug, click on the CSS Usage tab, click on "Autoscan", then navigate your website a few times (be sure to hit every page). It will keep track of which classes are used and you can export a "cleaned" version. This requires more manual work and may be subject to broken styles, but if you are careful, it should work fine.
The answer is not really, due to the fact a CSS file can be used across a magnitude of HTML pages.
I'm sure some people might have made a tool that parses all their own specific HTML pages and creates a list of 'unused' css classes, but it'd be likely to be very bespoke to their needs (also if the HTML pages render out different things due to a user's choices, how'd you know that the CSS class is or isn't used?)
Is there a way to add a Javascript segment to each page in my website via CSS?
I am looking to add some Javascript tracking code (for my own benefit (using Google Analytics)) before the closing </head> tag on every page.
The simple question is: is there a way to add code to the HTML on every page of my website between the <head> and </head> tags using CSS to dynamically insert it (as opposed to going through and updating every page manually)?
Thank you,
Mick
No, CSS is a collection of styles to apply to elements (which can handle alternating states of controls, such as :hover), but isn't functional in the way you desire.
However, it seems to me that, if you can reference a CSS file globally, then you could simply place your Javascript in a separate file and reference that in each of your pages with a <script> tag (similar to how you would do with CSS files.)
Furthermore, if you're using a framework such as ASP.NET, then you can use master pages as templates from which relevant pages derive, reducing redundancy of this sort of thing.
Is there a way to add a Javascript segment to each page in my website via CSS?
No. Use a template language (e.g. TT) or include system (e.g. SSI) if you want common HTML across pages.
Nope, you can't add javascript through css. These are different techniques, one for changing the look of your website (css) and one for adding functionality to it (javascript). There is no way to add javascript through css-code.
As all the other answers stated: No, in general not.
Only MS IE offers such a solution, using the behavior-property.
I currently use this for an hover-anything-script for IE6 (included inside a conditional comment), which allows to add the CSS-:hover-selector to any HTML-element:
body {
behavior: url(/js/csshover.htc); }
The csshover.htc is from Peter Nederlof (LGPL).
See also: MSDN HTC Reference
Others have already noted that it's impossible. It seems that your site is static html only. Then you could write a little script that would prepend a link to javascript file before