How to check css's :invalid base class on blur - javascript

So I know on blur in css is not a thing but I want that the same thing that happens in this ex.
input:focus:invalid {
display: block;
background: red;
}
will happen on blur is there a way using a different language like JS or jquery etc to run the check? I know there is a way to check if text is valid using those languages but it does not work with what I do JSfiddle
ps
If I wasn't clear: trying to run css class using css+html valid/pattern but on blur

Related

How to Remove outline of input field

I have to debug code, that some other person has written.
I have several input and select fields, all of them with outlines, but different ones.
I did not find any way to change their behaviour and appearance
They look like the following:
How can I change this, so that all look simillar?
I'm using Chrome on MacOS
Outline Nr1
Outline Nr 2
You can use:
<input style="outline: none" >
Or either use this on css file
input {
outline: none
}
Make sure the stylesheet you're using is the last stylesheet that is applied to make sure your stylesheet's property apply.
Also, make sure you have the highest selector specificity, to be 100% sure, give your input a class like no-outline (it will be better if you put your code here)
Use the following code:
.no-outline:focus {
outline: none;
}
If none of this works then just add an !important tag in front of the code like
.no-outline:focus {
outline: none; !important
}
Though, using the !important is not recommended unless you have been scratching your head for hours.
And....if nothing works, only if nothing works, you can set the property inline
<input type="text" style="outline: none">
Do let me know if you are still confused.
set this css in your global css file.
input:focus-visible {
outline: transparent;
}

css hover override using only css and JS

I have a code that i can only edit the CSS and the JS. The problem is that the page loads a default css that cannot be altered but you can run an alternative css and JS to add content to a page and modify the css. So i guess the css that is loaded overrides the default one. But the problem is that you can't just say
a:hover {
background-color: red;
}
You would have to reset background color with none and add underline and stuff.
so how can i tell my css to put my *:hover important over any else and remove the default hover?
The css may be too nested. Adding an !important tag would help. But it's more semantic to follow the train of elements. Right click the element you want to style. When you're looking at the editor, you'll see the specificity on the right side (where the css is) and then you can copy the selector they have. Using this selector should allow you to overwrite any styles necessary.
Far top right of the image. The .container is the overall class used here. In some cases you may see something like. (From Foundation)
.top-bar-section li:not(.form) a:not(.button)
Add following in your CSS and make sure you load it after default CSS.
a:hover {
background-color: NONE !important;
}
Using Javascript
$('body').append('<style>a:hover { background-color: none !important; }</style>');

Prevent css interact in a div

I am doing a code that do some js injection of code in page, with JQuery. But in my input that i get in some pages modify it, I am putting all important attributes and define them as !important, but it's impossible to put all the attributes in all the tags.
Someone know how to disable all other css inside a div?
Solution I think:
I found a solution but i don't want to use it. Its eliminate al css from the page, while i am injecting the code after using that code I eliminate my css and code and apply the original code from the webpage
Thanks
If you're using that many !importants you're doing it wrong.
The solution to this problem is to properly organize your css. Important stuff last, because it overrides what was previously styled. Also use your selectors wisely. Example:
<a class="link">Link</a>
.
a:link { color: red; }
.
.
.
.link { color: green !important; } // Nop
a.link { color: green; } // Yup
If you override everything it will work with normal CSS rules on every page. Not what you were hoping for, but it is a solution.
css:
#myInsertDiv {
color: blue;
padding: 0;
margin: 0;
background: white;
border: 0px;
/* etc you have to restyle EVERY possible value */
}
html:
<div id="myInsertDiv"></div>
The main issue is you have to style every attribute, and reset everything else to a default value.
Or you can insert all the style information into the style attribute on the div, but that is probably doing it wrong too.
If I got you right you can use jQuery for modifying CSS properties on any elements of the page (huh), using something like this $('.Myclass').css('color','#ff0000')
And more about selectors in jQuery - http://api.jquery.com/category/selectors/

remove / reset inherited css from an element [duplicate]

This question already has answers here:
How to reset/remove CSS styles for a specific element or selector only
(17 answers)
Closed last month.
I know this question was asked before, but before marking it as a duplicate, I want to tell you that my situation is a little different from what I found on the internet.
I'm building and embedded script that people can put it on their sites. This script creates a div with a certain width/height and some information in it.
My problem is that some websites declare styles for div that are inherited by my div as well.
for example:
div{
background-color:red;
}
so if I don't set any background color to my div, it will show red even if I don't want that.
The only solutions I come along is to overwrite as many css proprieties, this way my div will show exactly as I want.
The problem with this solution is that there are too many css proprieties to overwrite and I want my script to be as light as it can be.
So my question is if you know another solution to my problem.
It can be in css/javascript /jQuery.
Thanks
"Resetting" styles for a specific element isn't possible, you'll have to overwrite all styles you don't want/need. If you do this with CSS directly or using JQuery to apply the styles (depends on what's easier for you, but I wouldn't recommend using JavaScript/JQuery for this, as it's completely unnecessary).
If your div is some kind of "widget" that can be included into other sites, you could try to wrap it into an iframe. This will "reset" the styles, because its content is another document, but maybe this affects how your widget works (or maybe breaks it completely) so this might not be possible in your case.
Only set the relevant / important CSS properties.
Example (only change the attributes which may cause your div to look completely different):
background: #FFF;
border: none;
color: #000;
display: block;
font: initial;
height: auto;
letter-spacing: normal;
line-height: normal;
margin: 0;
padding: 0;
text-transform: none;
visibility: visible;
width: auto;
word-spacing: normal;
z-index: auto;
Choose a very specific selector, such as div#donttouchme, <div id="donttouchme"></div>. Additionally, you can add `!important before every semicolon in the declaration. Your customers are deliberately trying to mess up your lay-out when this option fails.
You could try overwriting the CSS and use auto
I don't think this will work with color specifically, but I ran into an issue where i had a parent property such as
.parent {
left: 0px;
}
and then I was able to just define my child with something like
.child {
left: auto;
}
and it effectively "reset" the property.
Technically what you are looking for is the unset value in combination with the shorthand property all:
The unset CSS keyword resets a property to its inherited value if it inherits from its parent, and to its initial value if not. In other words, it behaves like the inherit keyword in the first case, and like the initial keyword in the second case. It can be applied to any CSS property, including the CSS shorthand all.
.customClass {
/* specific attribute */
color: unset;
}
.otherClass{
/* unset all attributes */
all: unset;
/* then set own attributes */
color: red;
}
You can use the initial value as well, this will default to the initial browser value.
.otherClass{
/* unset all attributes */
all: initial;
/* then set own attributes */
color: red;
}
As an alternative:
If possible it is probably good practice to encapsulate the class or id in a kind of namespace:
.namespace .customClass{
color: red;
}
<div class="namespace">
<div class="customClass"></div>
</div>
because of the specificity of the selector this will only influence your own classes
It is easier to accomplish this in "preprocessor scripting languages" like SASS with nesting capabilities:
.namespace{
.customClass{
color: red
}
}
Try this: Create a plain div without any style or content outside of the red div. Now you can use a loop over all styles of the plain div and assign then to your inner div to reset all styles.
Of course this doesn't work if someone assigns styles to all divs (i.e. without using a class. CSS would be div { ... }).
The usual solution for problems like this is to give your div a distinct class. That way, web designers of the sites can adjust the styling of your div to fit into the rest of the design.
As long as they are attributes like classes and ids you can remove them by javascript/jQuery class modifiers.
document.getElementById("MyElement").className = "";
There is no way to remove specific tag CSS other than overriding them (or using another element).
you may use this below option.
<style>
div:not(.no_common_style){
background-color:red;
}
</style>
now , if their any place where you do not want to apply default style you can use 'no_common_style' class as class.
ex:
<div class="no_common_style">
It will not display in red
</div>
From what I understand you want to use a div that inherits from no class but yours. As mentioned in the previous reply you cannot completely reset a div inheritance. However, what worked for me with that issue was to use another element - one that is not frequent and certainly not used in the current html page. A good example, is to use instead of then customize it to look just like your ideal would.
area { background-color : red; }
One simple approach would be to use the !important modifier in css, but this can be overridden in the same way from users.
Maybe a solution can be achieved with jquery by traversing the entire DOM to find your (re)defined classes and removing / forcing css styles.

Custom Checkbox

Hello i am trying to create a custom checkbox for my website like the image link provided. What would be the best way to go around doing this?
Many thanks.
There is a CSS trick that actually works by hiding the checkbox (or radio), defining a label (which in all relevant browsers will turn the checkbox on/off) that will be the visual representation, and using the :checked and + selectors.
This is just a simple example:
.foscheck input { display: none; }
.foscheck label { display: block; width: 20px; height: 20px; background: red; }
.foscheck input:checked + label { background: blue; }
<div class="foscheck">
<input type="checkbox" id="fos1" />
<label for="fos1"></label>
</div>
jsFiddle Demo
Downsides: the :checked selector unfortunately does not work on IE, only from IE9. You can apply a Javascript fallback only for IE through conditional comments though.
Note: For accessibility, you should have some text describing the checkbox in the label, I just wanted to illustrate the effect.
jQuery is your best bet, this is a checkbox plugin for example, but there are hundreds of them so something else may suit you better. Just google 'jquery custom checkbox'.

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