Evaluating the generated HTML using JavaScript and Selenium testing

Question

Evaluating the generated HTML using JavaScript and Selenium testing

I am a new user of Selenium using C# and I want to automate the login process on a third-party website. When I manually navigate to the page in Chrome and inspect the elements, I can see the text boxes for username and password.

<input type="text" id="username" name="username" >
<input type="password" id="password" name="password" >

However, when I view the page source, I do not see these input fields. I suspect that there is JavaScript code generating this login form dynamically.

In Selenium, when I try to locate the elements using their names, I receive a "No Such Element" error as expected:

var x = Driver.FindElement(By.Name("username"));

Is it possible for Selenium to interact with elements that are generated dynamically like in my case? Can I instruct Selenium to wait for the dynamic content to load or somehow access the dynamically created HTML?

javascript selenium dynamic .net-4.0 selenium-webdriver

Answer 1

Answer №1

If the target element is not located inside an iframe, one method to address this issue is to utilize an Explicit Wait:

To implement:
IWait wait = new WebDriverWait(driver, TimeSpan.FromSeconds(3));
IWebElement element = wait.Until(ExpectedConditions.ElementExists(By.Id("username")));

For further reference: Selenium c# Webdriver: Wait Until Element is Present

In cases where the element lies within an iframe, it is necessary to first switch to it:

Process:
IWebElement frame = driver.FindElement(By.Id("my_frame_id"));
driver.SwitchTo().Frame(frame);

Additional resource: Finding nested iFrame using Selenium 2

Answer 2

If the target element is not located inside an iframe, one method to address this issue is to utilize an Explicit Wait:

To implement:
IWait wait = new WebDriverWait(driver, TimeSpan.FromSeconds(3));
IWebElement element = wait.Until(ExpectedConditions.ElementExists(By.Id("username")));

For further reference: Selenium c# Webdriver: Wait Until Element is Present

In cases where the element lies within an iframe, it is necessary to first switch to it:

Process:
IWebElement frame = driver.FindElement(By.Id("my_frame_id"));
driver.SwitchTo().Frame(frame);

Additional resource: Finding nested iFrame using Selenium 2

Evaluating the generated HTML using JavaScript and Selenium testing

Answer №1

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