What is the most effective method to create a cross-browser compatible variable in my CSS stylesheet?
I am looking to define
color: #123456;
as a variable as I need to utilize it in multiple places, and if I decide to modify this color, I want it to update everywhere.
CSS Variables are available, with support mainly from Mozilla browser at this time.
Other options to consider:
Instead of directly specifying a color in an element's style:
<div class="thisElement"></div>
.thisElement {
font-size: 13px
background: red;
color: #123456;
}
consider using classes for better organization:
<div class="thisElement color1"></div>
.thisElement {
font-size: 13px
background: red;
}
.color1 {
color: #123456;
}
This way, you only need to specify the color once in your style sheet, following the principles of 'object oriented CSS'. By creating separate classes with specific styles, you can assign them as needed to different DOM objects.
You've essentially transformed the class name into a variable, declaring it in CSS once and reusing it multiple times in HTML.
If you're looking to implement this in pure CSS, it won't be possible. However, utilizing tools like SASS or LESS can help you achieve the exact functionality you desire.
These technologies offer cross-browser compatibility, variables, and the ability to perform calculations.
Once you become familiar with the syntax (which is straightforward and customizable), SASS will generate the "clean" css files for you, making your code more organized and easier to manage.
Here is a helpful resource: http://sass-lang.com/
Additionally, you can explore some examples and snippets to gain a better understanding here.
Although not widely supported, the functionality detailed in the link below explains how custom properties work according to http://www.w3.org/TR/css-variables/
Custom properties serve as variables and are referenced using the var() notation, offering versatility for various purposes. For instance, a website that consistently uses a limited color palette can define these colors as custom properties and utilize them with variables:
:root {
--main-color: #06c;
--accent-color: #006;
}
/* Further styles in the CSS file */
#foo h1 {
color: var(--main-color);
}
An alternative approach would be to employ a preprocessor like SASS, which enhances this capability.
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