As a beginner programmer and college student with limited design knowledge, I am working on creating a microblogging website similar to Twitter. I noticed that some websites use pre-loaded styles or themes without separate CSS files. I am unsure of how to implement this on my website. Could you please explain the process in simple terms as I am not well-versed in this area? Thank you in advance!
Initially, you must provide your users with the capability to make alterations, assuming this has already been implemented.
Next step involves creating a foundational CSS file containing all the predefined rules and styles, with exception of the ones designated for user customization (or having default settings in place).
Once the user specifies their desired rules, a CSS file should be generated and saved in their individual folder (avoiding the use of a database for this purpose). Subsequently, this customized CSS file should be loaded alongside the base CSS file whenever the user accesses their profile.
Typically, a central CSS file sets the foundation for styling elements that remain constant, while additional CSS files are used to apply different themes. Each theme has its own separate CSS file. When constructing a webpage, only one of these theme files needs to be linked using a link element.
To enable the ability to switch themes dynamically, you can achieve this by simply adjusting the href attribute of the link element.
For example, if we have a link tag like this:
<link id="themeStyle" href="green.css" rel="stylesheet">
The following code snippet can change it to a different theme:
document.getElementById("themeStyle").href = "blue.css";
Check out the live example: Live Demo | Source Code
HTML:
<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>JS Bin</title>
<link id="themeStyle" href="/acofoy/1" rel="stylesheet">
</head>
<body>
<div id="group">
<div><label><input name="theme" type="radio" value="1" checked>Green</label></div>
<div><label><input name="theme" type="radio" value="2">Blue</label></div>
<div><label><input name="theme" type="radio" value="3">Red</label></div>
</div>
</body>
</html>
JavaScript:
(function() {
var buttons = document.getElementById("group").getElementsByTagName("input");
var index;
for (index = 0; index < buttons.length; ++index) {
buttons[index].onclick = setStyle;
}
function setStyle() {
document.getElementById("themeStyle").href = "/acofoy/" + this.value;
}
})();
Note: I used numbers for the values rather than names because I was using JSBin. In real life, of course, I'd use names like green.css, blue.css, red.css, etc.
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