Change element style on hover of another element - javascript

I have the following HTML code:
<div> class="module-title"
<h2 class="title" style="visibility: visible;">
<span>Spantext</span>
Nonspantext
</h2>
</div>
What I want to do is to hover over the h2 element and both of the spantext and nonspantext to change color. My limitation is that I cannot put the Nonspantext inside span tags (I cannot change the HTML code at all).
The problem is that when I put the CSS rule
.title :hover {color:#D01A13;}
only the spantext changes color on hover and when I put the code
.module-title :hover {color:#D01A13;}
the nonspantext will change color if I hover over the spantext but I also want the opposite to happen.
I am aware of the '+' and '~' rules in CSS but I could not make it work.

.title:hover {
color:#D01A13;
}
Spaces matter in CSS. The space is the "children" operator, so .title :hover means "when any children of .title are hovered over." Text nodes don't count as children.
Here is a fiddle.
Re your comment:
Ok, this code is good, I did not know about spaces in CSS. But, forgot to mention that there is also a rule .title span {color:#888888 !important;} that complicates the things a little bit. If I cannot change this rule, is there any chance that the .title can change color on hover?
Sure, you could try
.title:hover, .title:hover span {
color:#D01A13 !important;
}
Of course, this is very ugly. This is why you should use !important as little as possible. Fiddle

jQuery approach to doing this, by wrapping inner content within another div and applying style to that div:
$('h2.title').wrapInner('<div class="wrapper" />');
Than just apply css styling to .wrapper if need be.

Related

How to use the pseudo selectors in Inline Css in material UI? [duplicate]

I have a case where I must write inline CSS code, and I want to apply a hover style on an anchor.
How can I use a:hover in inline CSS inside the HTML style attribute?
E.g., you can't reliably use CSS classes in HTML emails.
Short answer: you can't.
Long answer: you shouldn't.
Give it a class name or an id and use stylesheets to apply the style.
:hover is a pseudo-selector and, for CSS, only has meaning within the style sheet. There isn't any inline-style equivalent (as it isn't defining the selection criteria).
Response to the OP's comments:
See Totally Pwn CSS with Javascript for a good script on adding CSS rules dynamically. Also see Change style sheet for some of the theory on the subject.
Also, don't forget, you can add links to external stylesheets if that's an option. For example,
<script type="text/javascript">
var link = document.createElement("link");
link.setAttribute("rel","stylesheet");
link.setAttribute("href","http://wherever.com/yourstylesheet.css");
var head = document.getElementsByTagName("head")[0];
head.appendChild(link);
</script>
Caution: the above assumes there is a head section.
You can get the same effect by changing your styles with JavaScript in the onMouseOver and onMouseOut parameters, although it's extremely inefficient if you need to change more than one element:
<a href="abc.html"
onMouseOver="this.style.color='#0F0'"
onMouseOut="this.style.color='#00F'" >Text</a>
Also, I can't remember for sure if this works in this context. You may have to switch it with document.getElementById('idForLink').
You could do it at some point in the past. But now (according to the latest revision of the same standard, which is Candidate Recommendation) you can't
.
You can't do exactly what you're describing, since a:hover is part of the selector, not the CSS rules. A stylesheet has two components:
selector {rules}
Inline styles only have rules; the selector is implicit to be the current element.
The selector is an expressive language that describes a set of criteria to match elements in an XML-like document.
However, you can get close, because a style set can technically go almost anywhere:
<html>
<style>
#uniqueid:hover {do:something;}
</style>
<a id="uniqueid">hello</a>
</html>
If you actually require inline code, this is possible to do. I needed it for some hover buttons, and the method is this:
.hover-item {
background-color: #FFF;
}
.hover-item:hover {
background-color: inherit;
}
<a style="background-color: red;">
<div class="hover-item">
Content
</div>
</a
In this case, the inline code: "background-color: red;" is the switch colour on hover. Use the colour you need and then this solution works. I realise this may not be the perfect solution in terms of compatibility, however this works if it is absolutely needed.
While it appears to be impossible to define a hover-rule inline, you can define the value of styles inline using a CSS variable:
:hover {
color: var(--hover-color);
}
<a style="--hover-color: green">
Library
</a>
Consider using an attribute or a class in addition to the selector (e.g., [hover-color]:hover) to allow coexistence with other low specificity hover color changing rules (from, e.g., a CSS reset or some elements using the default style).
Using JavaScript:
a) Adding inline style
document.head.insertAdjacentHTML('beforeend', '<style>#mydiv:hover{color:red;}</style>');
b) or a bit harder method - adding "mouseover"
document.getElementById("mydiv").onmouseover= function(e){this.className += ' my-special-class'; };
document.getElementById("mydiv").onmouseleave= function(e){this.className = this.className.replace('my-special-class',''); };
Note: multi-word styles (i.e.font-size) in JavaScript are written together:
element.style.fontSize="12px"
This is the best code example:
<a
style="color:blue;text-decoration: underline;background: white;"
href="http://aashwin.com/index.php/education/library/"
onmouseover="this.style.color='#0F0'"
onmouseout="this.style.color='#00F'">
Library
</a>
Moderator Suggestion: Keep your separation of concerns.
HTML
<a
style="color:blue;text-decoration: underline;background: white;"
href="http://aashwin.com/index.php/education/library/"
class="lib-link">
Library
</a>
JS
const libLink = document.getElementsByClassName("lib-link")[0];
// The array 0 assumes there is only one of these links,
// you would have to loop or use event delegation for multiples
// but we won't go into that here
libLink.onmouseover = function () {
this.style.color='#0F0'
}
libLink.onmouseout = function () {
this.style.color='#00F'
}
Inline pseudoclass declarations aren't supported in the current iteration of CSS (though, from what I understand, it may come in a future version).
For now, your best bet is probably to just define a style block directly above the link you want to style:
<style type="text/css">
.myLinkClass:hover {text-decoration:underline;}
</style>
Foo!
As pointed out, you cannot set arbitrary inline styles for hover, but you can change the style of the hover cursor in CSS using the following in the appropriate tag:
style="cursor: pointer;"
<style>a:hover { }</style>
Go Home
Hover is a pseudo class, and thus cannot be applied with a style attribute. It is part of the selector.
You can do this. But not in inline styles. You can use onmouseover and onmouseout events:
<div style="background: #333; padding: 10px; cursor: pointer"
onmouseover="this.style.backgroundColor='#555';" onmouseout="this.style.backgroundColor='#333';">
Hover on me!
</div>
According to your comments, you're sending a JavaScript file anyway. Do the rollover in JavaScript. jQuery's $.hover() method makes it easy, as does every other JavaScript wrapper. It's not too hard in straight JavaScript either.
There is no way to do this. Your options are to use a JavaScript or a CSS block.
Maybe there is some JavaScript library that will convert a proprietary style attribute to a style block. But then the code will not be standard-compliant.
You can write code in various type.
First I can write this
HTML
<a href="https://www.google.com/" onMouseOver="this.style.color='red'"
onMouseOut="this.style.color='blue'" class="one">Hello siraj</a>
CSS
.one {
text-decoration: none;
}
You can try another way:
HTML
Hello siraj
CSS
.one {
text-decoration: none;
}
.one:hover {
color: blue;
}
.one:active {
color: red;
}
You can also try hover in jQuery:
JavaScript
$(document).ready(function() {
$("p").hover(function() {
$(this).css("background-color", "yellow");
}, function() {
$(this).css("background-color", "pink");
});
});
HTML
<p>Hover the mouse pointer over this paragraph.</p>
In this code you have three functions in jQuery. First you ready a function which is the basic of a function of jQuery. Then secondly, you have a hover function in this function. When you hover a pointer to the text, the color will be changed and then next when you release the pointer to the text, it will be the different color, and this is the third function.
I just figured out a different solution.
My issue: I have an <a> tag around some slides/main content viewer as well as <a> tags in the footer. I want them to go to the same place in IE, so the whole paragraph would be underlined onHover, even though they're not links: the slide as a whole is a link. IE doesn't know the difference. I also have some actual links in my footer that do need the underline and color change onHover. I thought I would have to put styles inline with the footer tags to make the color change, but advice from above suggests that this is impossible.
Solution: I gave the footer links two different classes, and my problem was solved. I was able to have the onHover color change in one class, have the slides onHover have no color change/underline, and still able to have the external HREFS in the footer and the slides at the same time!
It's not exactly inline CSS, but it is inline.
<a href="abc.html" onMouseOver="this.style.color='#0F0'"
onMouseOut="this.style.color='#00F'">Text</a>
I agree with shadow. You could use the onmouseover and onmouseout event to change the CSS via JavaScript.
And don't say people need to have JavaScript activated. It's only a style issue, so it doesn't matter if there are some visitors without JavaScript ;)
Although most of Web 2.0 works with JavaScript. See Facebook for example (lots of JavaScript) or Myspace.
So this isn't quite what the user was looking for, but I found this question searching for an answer and came up with something sort of related. I had a bunch of repeating elements that needed a new color/hover for a tab within them. I use handlebars, which is key to my solution, but other templateing languages may also work.
I defined some colors and passed them into the handlebars template for each element. At the top of the template I defined a style tag, and put in my custom class and hover color.
<style type="text/css">
.{{chart.type}}-tab-hover:hover {
background-color: {{chart.chartPrimaryHighlight}} !important;
}
</style>
Then I used the style in the template:
<span class="financial-aid-details-header-text {{chart.type}}-tab-hover">
Payouts
</span>
You may not need the !important
While the "you shouldn't" context may apply there may be cases were you still want to achieve this. My use case was to dynamic set a hover color depending on some data value to achieve that with only CSS you can benefit from specificity.
Approach CSS only
CSS
/* Set your parent color for the inherit property */
.sidebar {
color: green;
}
/* Make sure your target element "inherit" parent color on :hover and default */
.list-item a {
color: inherit
}
.list-item a:hover {
color: inherit
}
/* Create a class to allows to get hover color from inline style */
.dynamic-hover-color:not(:hover) {
color: inherit !important;
}
Then your markup will be somewhat like:
Markup
<nav class="sidebar">
<ul>
<li class="list-item">
<a
href="/foo"
class="dynamic-hover-color"
style="color: #{{category.color}};"
>
Category
</a>
</li>
</ul>
</nav>
I'm doing this example using handlebars but the idea is that you take whatever is convenient for your use case to set the inline style (even if it is writing manually the color on hover you want)
You can just use an inline stylesheet statement like this:
<style>#T1:hover{color:red}</style><span id=T1>Your Text Here</span>
You can use the pseudo-class a:hover in external style sheets only. Therefore I recommend using an external style sheet. The code is:
a:hover {color:#FF00FF;} /* Mouse-over link */
You can do id by adding a class, but never inline.
<style>.hover_pointer{cursor:pointer;}</style>
<div class="hover_pointer" style="font:bold 12pt Verdana;">Hello World</div>
It is two lines, but you can reuse the class everywhere.
My problem was that I'm building a website which uses a lot of image-icons that have to be swapped by a different image on hover (e.g. blue-ish images turn red-ish on hover).
I produced the following solution for this:
.container div {
width: 100px;
height: 100px;
background-size: 100px 100px;
}
.container:hover .withoutHover {
display: none;
}
.container .withHover {
display: none;
}
.container:hover .withHover {
display: block;
}
<p>Hover the image to see it switch with the other. Note that I deliberately used inline CSS because I decided it was the easiest and clearest solution for my problem that uses more of these image pairs (with different URL's).
</p>
<div class=container>
<div class=withHover style="background-image: url('https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcQrqRsWFJ3492s0t0NmPEcpTQYTqNnH188R606cLOHm8H2pUGlH')"></div>
<div class=withoutHover style="background-image: url('http://i.telegraph.co.uk/multimedia/archive/03523/Cat-Photo-Bombs-fa_3523609b.jpg')"></div>
</div>
I introduced a container containing the pair of images. The first is visible and the other is hidden (display:none). When hovering the container, the first becomes hidden (display:none) and the second shows up again (display:block).

How can I select text in an element that isn't inside another element? [duplicate]

I have the following HTML markup:
<h1>
<div class="sponsor">
<span>Hello</span>
</div>
World
</h1>
When I use the CSS selector h1 I get Hello World.
I can't unfortunately change the markup and I have to use only CSS selectors because I work with the system that aggregates RSS feeds.
Is there any CSS selector which I can take only the text node? Specifically the World in this example?
The current state of CSS can't do this, check this link: W3C
The problem here is that the content you write to the screen doesn't show up in the DOM :P.
Also ::outside doesn't seem to work yet (at least for me in Safari 6.0.3) or it simply doesn't generate the desired result yet.
Check my fiddle and then check the DOM source: JSfiddle
Finally there are attribute selectors a { content: attr(href);}, making CSS able to read DOM-node attributes. There doesn't seem to be a innerHTML equivalent of this yet. It would be great tho if that was possible, whereas you might be able to manipulate the inner markup of a tag.
Bit of a workaround:
h1 {
color: red;
}
h1 * {
color: lime;
}
<h1>
<div class="sponsor">
<span>Hello</span>
</div>
World
</h1>
This is almost the opposite of a question I asked last week: Is it possible to select the very first element within a container that's otherwise pure text without using classes or identifiers in pure CSS?
The short answer is no. "World" in this example isn't an element of its own - therefore there isn't a way to select it.
What you would have to do here is style the h1 then override that styling with div.sponsor. For instance, if you wanted "World" here to have a black background with white text you woud use something similar to:
h1 {
background:black;
color:white;
}
h1 div.sponsor {
background:white;
color:black;
}
Unfortunately, however, this wouldn't work if you were only wanting the word "World" styled and your markup had more than just that within <div>Hello</div> World Foo, for instance.
I don't believe it would be possible with pure CSS to style just "World" in this situation.
I also met same problem, where I can't touch the markup and have no control with js.
I needed to hide a text nodes in a div element, but the element to remain visible.
So here is my solution:
markup:
<div id="settings_signout_and_help">
<a id="ctl00_btnHelpDocs" class="ico icoHelp" href="http://" Help Guide</a>
Signed in as: <a id="ctl00_lUsr" href="Profile.aspx">some</a>
Home
Sign out
</div>
css:
#settings_signout_and_help {
font-size: 1px !important;
}
#settings_signout_and_help a {
font-size: 13px !important;
}
Hope this helps guys!
I had a similar problem where I had to remove the "World" text from html generated by a C# function.
I set the font-size to 0 on the 'h1' element and then applied my css to div class. Basically hiding the extra text, but keeping content in the div.
I don't know how to do it with just CSS, but...
Using JQuery, you could select all the elements inside except the stuff inside its child element
$("h1:not(h1 > div)").css()
and put whatever CSS effect you want inside there.

How to override inline CSS that is already marked !important from external HTML

I am using HTML to input a cloud-based instagram feed on a website. I want to hide the bottom half of the feed that references the website of the publisher. The inline HTML that is outputting already has display: inline-block !important marked, so trying to hide it with display: none !important or visibility: hidden !important do not work. I am able to hide the entire block with CSS but not "parts" of it. I don't seem to be able to edit the HTML since it is coming from the cloud. The only HTML that I actually use on the site in order to make it render does not include any of the inline CSS, as it is only two lines.
Would someone mind explaining how this kind of thing works and why I am encountering issues overriding the inline CSS?
I have tried using:
display: inline !important, display: none !important and visibility: hidden !important
None of these are receiving priority, as the element.style in the chrome developer console clearly shows the inline CSS already marked as !important that I do not have access to, nor can I edit.
I simply want to hide one selector within the HTML. It is marked as "a"
a {
}
I have tried using this selector within the actual element, but it does not receive priority either. Nothing is working.
Try to remove the inline style with jQuery
$("#myDiv2").css("transform","");//used rotate to see the effect
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<div id="myDiv1" style="width:100px !important; height:100px !important;transform:rotate(30deg) !important">
//Some Content
</div>
<div id="myDiv2" style="width:100px !important; height:100px !important; transform:rotate(30deg) !important">
//Some Content
</div>
Setting the value of a style property to an empty string removes that property from an element.
$("#myDiv2").css("transform","");
Typically the only way to do this is to be more specific in your selector, for example selecting a[href][style] is more specific than just a. But since this is inline styles and already using !important you unfortunately might be out of luck!
a[href][style]{
color: green !important;
}
This link uses !important
<br/>
This link does not
If you wanted to just remove the links without importing several thousand lines of jQuery code, you can select and remove all <a> tags with just a few lines of plain JS.
document.querySelectorAll('a').forEach(link => {
link.remove();
});
<p> here is some text
This link uses !important
<br/>
This link does not
and some more text
</p>

How to make one element get hovered when hover on other element

I need such a scenario at where if anyone hover on a div, another div will be hovered. Just like:
HTML
<div class="box"></div>
<div class="link-box">
Touch the Grey Box and I get hovered!
</div>
CSS:
.link-box a:hover {
color: red;
}
Foddle Work
If anyone hover on the div.box, div.link-box will get hovered I mean get the red color. Is it possible? Please, don't tell it like this CSS way:
.box:hover .link-box a {
color: red;
}
My scenario is not like this. I've more complex scenario. So, it's only possible with jQuery. As I ain't good at jQuery, I can't write the script. That's why I need your help. What's the jQuery for it? May be, something like this?
$('.box').hover(function(){
$('.link-box').hover();
});
..............................................Update..................................
All the answer is related with CSS. Basically, div.link-box is such a complex div at my webpage that if anyone hover on the div.link-box many action happened, like pop-up box coming, multiple child elements of div.link-boxwill change. All happened with jQuery + CSS. And I need all the hover action of div.link-box when anyone hover on div.box. I just make here div.link-box as a link to make you understand my problem. But, basically it's not just css change. So, is it possible to bring all div.link-box hover action by hover on another div/button/link just like div.box by jQuery ?
As long as they stay in the same layout you can use the adjacent selector (+) in css.
Updated Fiddle
.link-box a:hover, .box:hover + .link-box a{
color: red;
}
The important thing to remember about the adject selector is that the two divs have to have the same parent, and the box has to immediately precede the second div.
More information on the adjacent selector
Edit:
Another option would be to wrap both divs in another div, and use the hover of the wrapper div.
This second option doesn't have the drawbacks of using the adjacent selector. As long as the anchor is anywhere inside of the wrapper, it will be styled when any part of the wrapper is hovered.
FIDDLE
Like so:
<div class='box-wrapper'>
<div class="box"></div>
<div class="link-box"> Touch the Grey Box and I get hovered!
</div>
</div>
with the following style:
.box-wrapper:hover a {
color: red;
}
Create a CSS class called "hover" (to affect you a make it .hover a)
.hover a
{
color: red;
}
Then your JQuery would read:
$('.box').hover(function(){
$(".link-box").toggleClass("hover");
});
Instead of the :hover css selector, I would use classes.
CSS:
.hover{
color:red;
}
JS:
$('.box').hover(
function(){
$('.link-box').addClass('.hover');
},
function(){
$('.link-box').removeClass('hover');
}
);

Using span with javascript to create CSS transition

Using javascript, I randomly pick a word from a text in an html div tag and surround it with a span tag. Using the class of the span tag I try to perform a CSS transition of the word color from black to red. I then remove the span tag to change the word back to black color. The effect I am looking for are "flashing words".
I manage to get the word to change color, but can not get the smooth CSS transition to work.
My question is: Why isn't the CSS transition working?
My problem seems similar to this question, but I do not manage to get the solution of "forcing a layout" to work in my case.
I hope it is ok to provide a working link to the test code I am working with instead of posting code here (javascript file here). If not, I will of course on request add code to this post.
Thank you in advance! I have been busting my head against this problem for a full day without success. Time to acknowledge that I need help with this one :-)
Edit: Adding code.
HTML:
<div id="message">
Some words here.
</div>
CSS:
div#message span
{
color: black;
}
div#message span.redtext
{
transition: color 5s ease-out 0s;
color: red;
}
Javascript:
//Insert span around word
var newText = text.split(randomWord).join('<span>' + randomWord + '</span>');
$("#message").html(newText);
//Request property that requires layout to force a layout
var x = $("#message").clientHeight;
//Add class to span
var newText = newText.split('<span>').join('<span class="redtext">');
$("#message").html(newText);
CSS transitions apply to style changes on elements. When a new CSS style applies to the element you are able to specify the transition to use in that change. In your example, you have added a span which is created with a red text style. The span element has the red text style on creation. You are not transitioning an element from one style to another, you are simply inserting it with the redtext class style.
What you need to do is add a span with black text inside it, and then change the class of the span from "blacktext" to "redtext", and the transition will apply. You could insert it without a class at all and then change it, but I used the class 'blacktext' to make it easier to identify.
See:
http://jsfiddle.net/n8zNW/
Give your span a class so that you can easily get a reference to it using jquery. Then use the addClass and removeClass jquery methods to add and subsequently remove the class that gives the text its colour.
Here's a working example: http://jsfiddle.net/sVMZJ/

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