What is the best way to detect if there are any active jQuery components on a website using WebDriver?

Currently, I am in the process of automating a web page that contains various JavaScript and jQuery functionalities using Selenium WebDriver. It has come to my attention that some posts mention the importance of waiting for the page to load completely before executing any actions.

ExpectedCondition<Boolean> jQueryLoad = new ExpectedCondition<Boolean>() {
        @Override
        public Boolean apply(WebDriver driver) {
            try {
                return ((Long) executeJavaScript("return jQuery.active") == 0);
            } catch (Exception e) {
                return true;
            }
        }
    };

However, I have encountered an 'undefined type error' due to the use of the 'executeJavaScript' method. Can someone provide guidance on which library I might be missing or how to properly handle this issue with the code?

javascriptjavaselenium-webdriverwebdriver

Answer №1

The method you are looking for is not executeJavaScript, but rather executeScript. To execute your JavaScript code, you will need to cast your webdriver instance into JavascriptExecutor. Here is an example of how you can do this:

Replace your return statement with the following code snippet:-

((long)((JavascriptExecutor)driver).executeScript("return jQuery.active") == 0);

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