How can I select an option from a dynamically populated drop-down menu by using selenium?

251    Asked by DanielCameron in QA Testing , Asked on Feb 8, 2024

 I am currently engaged in a particular task that is related to selenium and handling drop-downs. In this particular task, how can I select an option from a dynamically populated drop-down menu by using Selenium considering options are loaded asynchronously? 

Answered by Delbert Rauch

 In the context of selenium, you can handle the dynamically populated drop-downs in selenium by using the steps which are given below:-

Identify the drop-down element

Try to locate the drop-down element by using an appropriate locator strategy such as ID, class, or even Xpath.

Wait for the drop-down to load

Try to execute a wait mechanism so that it can process the drop-down loaded fully before attempting to interact with it. This would be crucial for handling dynamically populated drop-downs.

WebDriverWait wait = new WebDriverWait(driver, 10);
WebElement dropdown = wait.until(ExpectedConditions.visibilityOfElementLocated(By.id(“yourDropdownId”)));

Select drop-down options

You can select the class in Selenium so that you can interact with the drop-down and select the required options:-

Select dropdownSelect = new Select(dropdown);
dropdownSelect.selectByVisibleText(“OptionText”);
// or
dropdownSelect.selectByValue(“OptionValue”);
// or
dropdownSelect.selectByIndex(index);

Handling asynchronous loading

If the drop-down options are loaded asynchronously, then you can try to wait for the options that are to be populated dynamically:-

// Wait for options to be loaded (adjust the condition as needed)

    Wait.until(ExpectedConditions.numberOfElementsToBeMoreThan(By.xpath(“//xpath/to/dropdown/options”), 0));

You can adjust the condition which should be based on your particular application’s specific behavior.



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