CSS classes and selectors detection involves checking if specific CSS classes or identifiers associated with ads are present on the page. Below is a basic example using JavaScript to illustrate this concept:

// Example ad-related CSS class
var adClass = "ad-container";

// Check if elements with the ad-related class are present on the page
var adElements = document.getElementsByClassName(adClass);

if (adElements.length > 0) {
    // Elements with the ad-related class are present, indicating that the ad is not blocked
    console.log("Ad elements are present");
} else {
    // No elements with the ad-related class found, indicating a potential AdBlocker
    console.log("Ad blocked by AdBlocker");
}

In this example, it assumes that an ad-related CSS class (adClass) is applied to elements containing ads. The script uses document.getElementsByClassName to find all elements with this class. If any elements are found, it logs a message indicating that the ad elements are present. If no elements are found, it logs a message indicating that the ad might be blocked by an AdBlocker.

Keep in mind that this is a basic example, and real-world implementations may involve more sophisticated techniques. Users can employ various methods to hide or modify elements on the page, making it challenging to reliably detect the presence of ad-related classes or identifiers.

Responsible development practices should be followed, considering user privacy and ensuring compliance with relevant regulations. Users have the right to control their online experience, and website developers should aim for a balance between providing content and respecting user preferences.

Script detection involves checking for the presence or absence of certain JavaScript functions or variables related to ad-serving. Below is a basic example using JavaScript to illustrate script detection:

// Example ad-related function or variable
var adFunction = window.adFunction || function() {
    // This function represents an ad-related script
    console.log("Ad script executed");
};

// Check if the ad-related function exists
if (typeof adFunction === "function") {
    // The ad-related function exists, indicating that the ad script is not blocked
    console.log("Ad script is not blocked");
} else {
    // The ad-related function is missing, indicating a potential AdBlocker
    console.log("Ad script blocked by AdBlocker");
}

In this example, it assumes that an ad-related function (adFunction) is defined in the global scope. The script checks if this function exists. If the function is present, it logs a message indicating that the ad script is not blocked. If the function is missing, it logs a message indicating that the ad script might be blocked by an AdBlocker.

It's important to note that this is a basic example, and real-world implementations may involve more complex methods to obfuscate the detection code. Additionally, users can employ various techniques to bypass such checks, and the effectiveness of script detection can be limited.

Developers should also consider user privacy and ensure that any detection mechanisms are implemented responsibly and in compliance with privacy regulations. Users have the right to control their browsing experience and may choose to use ad-blockers for various reasons, so it's essential to respect their preferences while maintaining a balance with the needs of content creators and websites.

Hidden elements detection involves checking if certain elements associated with ads are hidden or not present on the page. Here's a simple example using JavaScript to demonstrate this concept:

// Example ad container element ID
var adContainerId = "adContainer";

// Check if the ad container element is hidden or not present
var adContainer = document.getElementById(adContainerId);

if (adContainer) {
    // Check if the ad container is visible
    var isAdVisible = adContainer.offsetParent !== null;

    if (isAdVisible) {
        // The ad container is visible, indicating that the ad is not blocked
        console.log("Ad is visible");
    } else {
        // The ad container is hidden, indicating a potential AdBlocker
        console.log("Ad blocked by AdBlocker");
    }
} else {
    // The ad container element is not present on the page
    console.log("Ad container not found");
}

In this example, it assumes that the ad is wrapped in a container element with a specific ID (adContainerId). The script attempts to find this element using document.getElementById. If the element is found, it checks whether it is visible on the page (offsetParent !== null). If the element is visible, it logs a message indicating that the ad is not blocked. If the element is hidden, it logs a message indicating that the ad might be blocked by an AdBlocker. If the element is not found at all, it logs a message indicating that the ad container was not found.

Again, similar to other detection methods, this is a basic example, and real-world implementations may involve more sophisticated techniques. Additionally, users can find ways to circumvent such checks, so these methods are not foolproof. Responsible and privacy-conscious development practices should be followed when implementing such checks on websites.

Here's a simple example of JavaScript code that checks for blocked requests, assuming an ad is being loaded from a specific server:

// Example ad server URL
var adServerUrl = "https://adserver.example.com/ads/ad123.jpg";

// Create an image element
var img = new Image();

// Set an event handler for when the image loads successfully
img.onload = function() {
    // The ad was loaded successfully
    console.log("Ad loaded");
};

// Set an event handler for when the image fails to load
img.onerror = function() {
    // The ad failed to load, indicating a potential AdBlocker
    console.log("Ad blocked by AdBlocker");
};

// Set the source URL of the image to the ad server URL
img.src = adServerUrl;

In this example, an Image object is created and assigned an onload event handler for when the ad image successfully loads, and an onerror event handler for when the ad fails to load. If the ad is blocked by an AdBlocker, the onerror event will be triggered, and the corresponding message will be logged to the console.

Keep in mind that this is a basic example, and real-world implementations may involve more sophisticated techniques. Also, users who are aware of these methods may find ways to circumvent them, so such techniques are not foolproof. Additionally, it's important to consider user privacy and ensure that any such checks are done responsibly and in compliance with privacy regulations.