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Home Java javaTutorial Is There a Generic Selenium Function to Verify Complete Web Page Loading?

Is There a Generic Selenium Function to Verify Complete Web Page Loading?

Dec 29, 2024 am 01:06 AM

Is There a Generic Selenium Function to Verify Complete Web Page Loading?

Do we have any generic function to check if page has completely loaded in Selenium?

You are trying to determine if a web page has finished loading using Selenium. Although you have made an attempt using the code, even when the page is loading, it is not waiting. You seek a generic solution as opposed to one that examines a particular element for visibility or clickability.

Answer:

No, there is no generic Selenium method to confirm the full loading of a web page.

Explanation:

Let's examine your code:

new WebDriverWait(firefoxDriver, pageLoadTimeout).until(
          webDriver -> ((JavascriptExecutor) webDriver).executeScript("return document.readyState").equals("complete"));

The pageLoadTimeout variable in this code does not actually correspond to the real pageLoadTimeout() function.

However, for your use case of checking if a page has completely loaded, you can use the pageLoadStrategy() set to "normal" (other possible values include "none" and "eager") using either the DesiredCapabilities or ChromeOptions classes. Here are examples:

Using DesiredCapabilities:

DesiredCapabilities dcap = new DesiredCapabilities();
dcap.setCapability("pageLoadStrategy", "normal");
FirefoxOptions opt = new FirefoxOptions();
opt.merge(dcap);
WebDriver driver = new FirefoxDriver(opt);

Using ChromeOptions:

ChromeOptions opt = new ChromeOptions();
opt.setPageLoadStrategy(PageLoadStrategy.NORMAL);
WebDriver driver = new FirefoxDriver(opt);

Considerations:

Setting PageLoadStrategy to "normal" ensures that the browser client has reached the state where 'document.readyState' equals "complete." However, this does not guarantee that all JavaScript and Ajax calls have finished.

To address this, you can use a function to wait for all JavaScript and Ajax calls to complete:

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

Alternatively, you can use WebDriverWait in conjunction with ExpectedConditions to wait for a specific event or element state:

// Wait for a specific part of the page title
new WebDriverWait(driver, 10).until(ExpectedConditions.titleContains("partial_title_of_application_under_test"));

// Wait for a specific element to become visible
WebElement ele = new WebDriverWait(driver, 10).until(ExpectedConditions.visibilityOfElementLocated(By.xpath("xpath_of_the_desired_element")));

References:

  • [Selenium IE WebDriver only works while debugging](https://stackoverflow.com/questions/23791841/selenium-ie-webdriver-only-works-while-debugging)
  • [Selenium how to manage wait for page load?](https://stackoverflow.com/questions/19750811/selenium-how-to-manage-wait-for-page-load)
  • [Page load strategy for Chrome driver](https://stackoverflow.com/questions/55985139/page-load-strategy-for-chrome-driver-updated-till-selenium-v3-12-0)

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