selenium

css-selectors

selenium-webdriver

webdriver

selenium-chromedriver

i would like to find my TextField in selenium, but i dont know how (i use sellenium for the first time).

I tried:

 driver.findElement(By.id("originTextField"))

or by xPath and cssSelector String generated by chrome in dev tools.

Please help me, i would appreciate explanation.

this is html:

Solution 1

NoSuchElementException

org.openqa.selenium.NoSuchElementException popularly known as NoSuchElementException extends org.openqa.selenium.NotFoundException which is a type of WebDriverException.

NoSuchElementException can be thrown in 2 cases as follows :

  • When using WebDriver.findElement(By by) :

    //example : WebElement my_element = driver.findElement(By.xpath("//my_xpath"));
    
  • When using WebElement.findElement(By by) :

    //example : WebElement my_element = element.findElement(By.xpath("//my_xpath"));
    

As per the JavaDocs just like any other WebDriverException, NoSuchElementException should contain the following Constant Fields :

Constant Field      Type                                        Value
SESSION_ID          public static final java.lang.String        "Session ID"
e.g. (Session info: chrome=63.0.3239.108)

DRIVER_INFO         public static final java.lang.String        "Driver info"
e.g. (Driver info: chromedriver=2.34.522940 (1a76f96f66e3ca7b8e57d503b4dd3bccfba87af1),platform=Windows NT 6.1.7601 SP1 x86)

BASE_SUPPORT_URL    protected static final java.lang.String     "http://seleniumhq.org/exceptions/"
e.g. (For documentation on this error, please visit: http://seleniumhq.org/exceptions/no_such_element.html)

Reason

The reason for NoSuchElementException can be either of the following :

  • The Locator Strategy you have adopted doesn't identifies any element in the HTML DOM.
  • The Locator Strategy you have adopted is unable to identify the element as it is not within the browser's Viewport.
  • The Locator Strategy you have adopted identifies the element but is invisible due to presence of the attribute style="display: none;".
  • The Locator Strategy you have adopted doesn't uniquely identifies the desired element in the HTML DOM and currently finds some other hidden / invisible element.
  • The WebElement you are trying to locate is within an <iframe> tag.
  • The WebDriver instance is looking out for the WebElement even before the element is present/visibile within the HTML DOM.

Solution

The solution to address NoSuchElementException can be either of the following :

  • Adopt a Locator Strategy which uniquely identifies the desired WebElement. You can take help of the Developer Tools (Ctrl+Shift+I or F12) and use Element Inspector.

    Here you will find a detailed discussion on how to inspect element in selenium3.6 as firebug is not an option any more for FF 56?

  • Use executeScript() method to scroll the element in to view as follows :

    WebElement elem = driver.findElement(By.xpath("element_xpath"));
    ((JavascriptExecutor)driver).executeScript("arguments[0].scrollIntoView();", elem);
    

    Here you will find a detailed discussion on Scrolling to top of the page in Python using Selenium

  • Incase element is having the attribute style="display: none;", remove the attribute through executeScript() method as follows :

    WebElement element = driver.findElement(By.xpath("element_xpath"));
    ((JavascriptExecutor)driver).executeScript("arguments[0].removeAttribute('style')", element)
    element.sendKeys("text_to_send");
    
  • To check if the element is within an <iframe> traverse up the HTML to locate the respective <iframe> tag and switchTo() the desired iframe through either of the following methods :

    driver.switchTo().frame("frame_name");
    driver.switchTo().frame("frame_id");
    driver.switchTo().frame(1); // 1 represents frame index
    

    Here you can find a detailed discussion on Is it possible to switch to an element in a frame without using driver.switchTo().frame(frameName) in Selenium Webdriver Java?.

  • If the element is not present/visible in the HTML DOM immediately, induce WebDriverWait with ExpectedConditions set to proper method as follows :

    • To wait for presenceOfElementLocated :

      new WebDriverWait(driver, 20).until(ExpectedConditions.presenceOfElementLocated(By.xpath("//div[@class='buttonStyle']//input[@id='originTextField']")));
      
    • To wait for visibilityOfElementLocated :

      new WebDriverWait(driver, 20).until(ExpectedConditions.visibilityOfElementLocated(By.xpath("//div[@class='buttonStyle']//input[@id='originTextField']")));
      
    • To wait for elementToBeClickable :

      new WebDriverWait(driver, 20).until(ExpectedConditions.elementToBeClickable(By.xpath("//div[@class='buttonStyle']//input[@id='originTextField']")));
      

Reference

You can find Selenium's client based relevant discussion in:

Solution 2

Your code is correct, I suspect the issue caused the page not complete load when you find the element.

Try add a long sleep before find element, if adding sleep worked, change sleep to wait.

Here is the code, It means waiting 10s if the element isnt present:

element = WebDriverWait(driver, 10).until(
    EC.presence_of_element_located((By.ID, "originTextField"))
)

Solution 3

Below code will helps you get it resolved

wait = new WebDriverWait(driver, 60);
wait.until(ExpectedConditions.presenceOfElementLocated(By.id("originTextField")));

or

wait = new WebDriverWait(driver, 90);
wait.until(ExpectedConditions.visibilityOf(element)).wait(20);