jQuery element selector with Id from Selenium 2 / WebDriver

I can get an element's ID in Selenium with ((RemoteWebElement) webElement).getId(), which returns a string like this:

{e9b6a1cc-bb6f-4740-b9cb-b83c1569d96d}

I wonder about the origin of that ID. I am using the FirefoxDriver(), so is this Firefox related maybe?

Is there a way to select an element with Jquer开发者_Python百科y only by knowing this ID?

You don't need to access the internal ID at all. Just pass the WebElement instance to JavascriptExecutor.executeScript:

import org.openqa.selenium.JavascriptExecutor;

((JavascriptExecutor) driver).executeScript("$(arguments[0]).whatever()", myElement)

This lots-of-letters-and-digits ID is an internal identifier of a node in the browser DOM that correspond to your WebElement object.

To get the value of the attribute 'id' you have to use getAttribute method:

String id = myElement.getAttribute("id");

To select an element by its 'id' attribute you have to use findElement method as follows:

WebElement myElement = driver.findElement(By.id("my_element_id"));

If you want to use jQuery selectors, you have to use findElement method as follows (suppose you know it is a 'div' element):

WebElement myElement = driver.findElement(By.cssSelector("div#my_element_id"));