How Can I Reliably Check for Complete Page Load in Selenium?

Checking Page Load Status in Selenium

In Selenium, verifying if a web page has fully loaded is a common requirement. While implementing this functionality, users often encounter issues with existing solutions.

Generic Function Availability

Unfortunately, there is no generic function in Selenium that directly checks if a page has completely loaded.

Page Load Strategy and JavaScript Execution

In your code attempt, you used pageLoadTimeout and document.readyState evaluation. However, page load strategy controls when Selenium considers a page fully loaded, it doesn't guarantee all elements are present. Waiting for the document.readyState to be "complete" only indicates the HTML structure is available.

Waiting for Complete Page Load

A more comprehensive approach is required to ensure all page elements are visible and loaded.

Page Load Strategy

Setting the Page Load Strategy to "normal" using DesiredCapabilities or ChromeOptions assists in capturing when document.readyState is "complete". However, this still doesn't guarantee all resources are loaded.

Dynamic Element Waiting

For dynamic pages with JavaScript and Ajax calls, you can use the following function to wait for completion:

public void WaitForAjax2Complete() throws InterruptedException {
    while (true) {
        if ((Boolean) ((JavascriptExecutor)driver).executeScript("return jQuery.active == 0")) {
            break;
        }
        Thread.sleep(100);
    }
}

Expected Conditions

Using WebDriverWait with ExpectedConditions like titleContains() or visibilityOfElementLocated() can ensure that the page title is visible or a specific element is accessible, respectively.

new WebDriverWait(driver, 10).until(ExpectedConditions.titleContains("partial_title_of_application_under_test"));

Conclusion

Checking if a web page is fully loaded in Selenium requires multifaceted approaches, including Page Load Strategy, dynamic content waiting, and verifying specific elements are available. Consider the examples and references provided to enhance your own implementations.

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