I want to use CSSStyleSheet.insertRule() to insert a new class inside a specific stylesheet. That stylesheet has the id "customStylesheet" for example.
This page says "A specific style sheet can also be accessed from its owner object (Node or CSSImportRule), if any.". However I can't figure out how to access that specific stylesheet.
It is fairly straight forward.
var sheet = document.getElementById('customStylesheet').sheet;
sheet.insertRule('.someclass {display: none;}'); // was missing a ' here
Here is a fiddle showing it working. I have updated the fiddle to show it working on a style tag in the head also.
This can be done with no jQuery. Say that you wished to set everything with the class purpleText to color: purple. First, you would get the stylesheet using document.styleSheets[_index_].ownerNode.sheet. Next, use the insertRule() method. The parameter is just a string holding the CSS code, as in ".purpleText{color: purple}". So, for the first stylesheet, the whole command would be document.styleSheets[0].ownerNode.sheet.insertRule(".purpleText{color: purple}");
To get a styleSheet by ID, use this:
document.getElementById('stylesheet').sheet;
Related
I'm trying to find a way for modify CSS while HTML is running, so far I find that is possible just with a little script like this next...
$("button").click(function(){
$("p").css("color","red");
});
As I can concern this is an effective way to modify the local CSS stylesheet refered to our HTML while webpage is running (i.e. pushing a div button).
What I'm trying to do is modify an specific .class from CSS stylesheet of an jQuery plugin for replacing the standard right-click context menu.
I didn't found any way in JS to call an specific stylesheet for modify any .class or #id
So my HTML had the following definitions:
<script src="jquery.contextmenu.js"></script>
<link rel="stylesheet" href="jquery.contextmenu.css">
<link rel="stylesheet" href="localstyle.css">
But when I try to update custom jQuery CSS with a script like this
$('#red').click(function(){
$('.contextMenuPlugin').css({'background-color': 'white'});
.contextMenuPlugin (native in jquery.contextmenu.css) isn't recognized, that script only work with a .class or a #id from my own stylesheet (localstyle.css).
I try things like using my local CSS embedded in HTML, and referencing jQuery CSS with an id but still nothing change. So there's the link of Github repo from jQuery plugin:
https://github.com/joewalnes/jquery-simple-context-menu
I try to make a live but JSfiddle dosn't work at all with this proyect, so if it helps or anyone want to check it, there's an pastebin of issue:
http://pastebin.com/u/27GRiS (4 files)
I hope someone help me clarify this, thanks in advance,
Federico.
The problem is that you think that
$('.contextMenuPlugin').css({'background-color': 'white'});
creates a stylesheet with
.contextMenuPlugin { background-color: white }
But it's not like this.
$('.contextMenuPlugin') gets all elements with class contextMenuPlugin in the moment you use it, and then, .css({'background-color': 'white'}) modifies the inline style of each element.
That means, if you create new elements with class contextMenuPlugin after that code, they won't be affected.
Then, you can:
Make sure that your target element exists when you use the code
Create a stylesheet with the desired CSS
Some time ago, I created a function which adds desired rules to an stylesheet, and allows you to reference and change/delete them. You can see it in this answer.
You should rethink your solution. Instead, add an additional class to your stylesheet that has the CSS changes you want.
Then, on clicking the button you can call addClass to add it to the appropriate elements.
Take your <script> code out of the <head> and put it at the end of the <body>.
Also you don't need this:
$(function() { ... })
if you already have this:
$(document).ready(function() { ... })
In other words, remove line 29 and line 27 (the $(function() { and });) from this file
I am still having trouble understanding regex. I am also not even sure if you can target a whole page...but without knowledge of how to format regex, its getting play with it.
I have a trademarked name that appears throughout my page. I'd like to use JS to add a (r) to the end of it every time it appears.
Can jquery/js accomplish this?
$("body").each(function() {
this.innerHTML = this.innerHTML.replace(
'breathe right',
'breathe right(r)');
});
Thanks!
This is a good use case for the CSS :after pseudo-element:
CSS
.product-name:after {
content: " \00AE"; /* add restricted symbol after every element with the product-name class */
}
HTML
<span class="product-name">My Product</span>
Working Demo
The easiest way is to wrap your product name in a span and tag it with a class. I'm not sure if that's less work that just adding the symbol to your markup to begin with, though.
The benefit of this approach is it would allow you to easily apply other styles to your product name, like bolding the text or changing the font color.
You can read more about the :after pseudo-element here.
Yes, but it won't be efficient if you tell jQuery to search the entire document. To make it efficient, you'll need to have jQuery get a specific location to search if you want any efficiency in it.
You don't need jQuery :
document.body.innerHTML = document.body.innerHTML.replace(/breathe right/g, 'breathe right(r)')
Does anyone know how i can make my textarea in a ckeditor object, use a class or custom style so i can show to the user something similar to what is getting rendered in the site?
Thanx
So i'm using bodyClass: 'class' in the config object, i use firebug and see the iframe body has my class applied, but it doesn't get the classes properties neither from my CSS, nor from contents.css (ckeditor)...
Well i was able to do it, adding an event to the object like this:
editor.on('instanceReady', function(){
$('#'+divname).find('iframe:first').contents().find('body').css({
'background-color':'#000000',
'font-family':'arial',
'font-size':'12pt',
'color':'#cdcdcd'
});
});
if anyone has the real solution, i think bodyClass should be it, i will gladly change my code.
Thanx
Simply edit the css file located at contents.css - edit the .cke_editable class to whatever suits your needs. Works 24/7
I have a list being displayed on a JSP. On mouse hover on any of the value i need to show a description corresponding that value. Need to show description not as an alert and also cannot make the values as hyperlink.
eg.
suppose the value is ABC so on mouse hover should show AppleBoyCat.
need to use onmouseover. let me know how to do it..
What do you want to do? If you just want to show a tooltip, you can set the title attribute of any element and it will be displayed as a tooltip.
Also, the abbr tag can be used as tooltips too:
<abbr title="test">stuff</abbr>
You can go about it in two ways:
1 - a hidden dom object (a div for instance) which reveals itself when you roll over whatever
or
2 - you can rewrite the html of the particular element you're mousing over.
You can load this data in when you load everything else (either as Javascript objects, or as markup, though that's much bulkier) or you can asynchronously load the description data from a service when you mouse over (though you'll have more lag).
jQuery is a quick and dirty way to achieve this (more quick than dirty), but straight JS or pretty much any other JS library will do as well.
Perhaps not the cleanest solution but something like this:
<a class='hover' rel='tooltip'>Link</a>
//Some hidden div, putting css inline just for example
<div id='tooltip' style='display:none;'>Content</div>
$(function() {
$('.hover').mouseover(function() {
var tooltip = $(this).attr('rel');
$('#' + tooltip).fadeIn();
});
});
And offcourse add a callback hiding it again. It just takes the value from rel of the link and use as an id for the div to show.
This is a quick and dirty solution, can be made alot smoother if you just work with it a little;)
There also alot of plugins out there allowing the same functionality in a cleaner fashion.
*Edit: Just noticed you added a comment on another post that you can't use jQuery.. shouldn't tag a post with something you're not intending to use.
As TJHeuvel already said, you can simply use the title attribute.
Best approach is to build the list with both the value and title attribute from within JSP, if not possible for some reason, you can build client side array of each value and its corresponding description then using JavaScript dynamically assign the title on mouseover.
Show us some more code to get more/better help.
For simple tooltips, the title attribute is most effective, as pointed out by TJHeuvel
If you need more advanced tooltips with HTML and CSS formatting, I'd suggest you use an external library.
One that works nicely without jQuery ist wz_tooltip download here, documentation here
When included correctly, you can add tooltips by calling the functions Tip() and UnTip() as follows:
Homepage
In firefox, I have the following fragment in my .css file
tree (negative){ font-size: 120%; color: green;}
Using javascript, how do I change the rule, to set the color to red?
NOTE:
I do not want to change the element.
I want to change the rule.
Please do not answer with something like
...
element.style.color = 'red';
What you're looking for is the document.styleSheets property, through which you can access your css rules and manipulate them. Most browsers have this property, however the interface is slightly different for IE.
For example, try pasting the following in FF for this page and pressing enter:
javascript:alert(document.styleSheets[0].cssRules[1].cssText)
For me that yields the string "body { line-height: 1; }". There are methods/properties that allow you to manipulate the rules.
Here's a library that abstracts this interface for you (cross-browser): http://code.google.com/p/sheetup/
function changeCSSRule (stylesheetID, selectorName, replacementRules) {
var i, theStylesheet = document.getElementById(stylesheetID).sheet,
thecss = (theStylesheet.cssRules) ? theStylesheet.cssRules : theStylesheet.rules;
for(i=0; i < thecss.length; i++){
if(thecss[i].selectorText == selectorName) {
thecss[i].style.cssText = replacementRules;
}
}
};
You can change CSS rules in style sheets through the CSS Object Model (currently known as DOM Level 2 Style). However, if you literally have "tree (negative)" in your style sheet that rule will be dropped and not appear in the Object Model at all.
As there is no HTML element tree I am going to assume that tree is the id or class of another element.
You would first retrieve the DOM element by id:
var tree = document.getElementById("tree");
Now tree represents your DOM element and you can manipulate it any way you like:
tree.style.color = "red";
Here is a great reference for mapping css properties to their javascript equivalent.
I'm not sure you can do actual class/selector overrides. You would need to target each element that used the .tree class and set the CSS. The quickest and easiest way would be through jQuery (or another similar framework):
$('.tree').each(function() { this.style.color = "red"; });
You could even use the built-in CSS functions:
$('.tree').css('color', 'red');
(I did it the first way to show you how standard JS would do it. The $(...) part is jQuery for selecting all elements with the .tree class. If you're not using jQuery, you'd need alternative code.)
If tree is an ID, not a class (there should only be one on the page) so using getElementById should be fine. Your code should look like the other answer.
for( var i in document.getElementsByTagName("tree") ){
document.getElementsByTagName("tree")[i].style.color = "red";
}
As I said in another answer's comment, I've never seen this done how you want. I've only ever targeted elements the same way as the CSS renderer would and changed each element style.
I did see this though: jQuery.Rule
It sounds like it does what you want but the demo causes my browser to flip out a bit. I'd invite you to look at the source to see it really does do what you want, and if you want to use it without jQ, use it as a starting point.
Edit: yes this should work. It works by appending another <style> tag to the page and writing out your overrides within. It's fairly simple to follow if you wanted to port it to plain JS.
For debugging, you can use Firebug to change the CSS rules on-the-fly.
If you want to change the rendered css rules from one page request to the next then some sort of server-side scripting will be required. Otherwise the original style sheet would simply reload at the next page request.
If you want to use an event on the first page to force the server-side action then you can use AJAX to actually change the CSS rule for the user.
"I want to change the rule so that
when I navigate to the next page, I
don't have to make all the changes
again."
It sounds like what you might want then is a remote request ("ajax") back to the server with the request you want to make, and generate a dynamic stylesheet which is sent back to the client?
How/why is this Firefox specific?
I want to change the rule so that when I navigate to the next page, I don't have to make all the changes again.
There are two approaches I can think of here. Namely client side and/or server side.
Client side:
Store the theme setting into cookies and load them up next time by javascript.
Server side:
If your site have an login system, you may also store the user preference into the database and generate the webpages with this inforamtion in mind next time on.
Utimately, you are still writing things like element.style.color =. But, they should get what you want.