Steve Chambers Steve Chambers - 4 months ago 12
Java Question

How to wait until an element is present in Selenium?

I'm trying to make Selenium wait for an element that is dynamically added to the DOM after page load. Tried this:

fluentWait.until(ExpectedConditions.presenceOfElement(By.id("elementId"));


In case it helps, here is
fluentWait
:


FluentWait fluentWait = new FluentWait<>(webDriver) {
.withTimeout(30, TimeUnit.SECONDS)
.pollingEvery(200, TimeUnit.MILLISECONDS);
}


But it throws a
NoSuchElementException
- looks like
presenceOfElement
expects the element to be there so this is flawed. This must be bread and butter to Selenium and don't want to reinvent the wheel... could anyone suggest an alternative, ideally without rolling my own
Predicate
?

Answer

You need to call ignoring with exception to ignore while the WebDriver will wait.

FluentWait fluentWait = new FluentWait<>(webDriver) {
  .withTimeout(30, TimeUnit.SECONDS)
  .pollingEvery(200, TimeUnit.MILLISECONDS);
  .ignoring(NoSuchElementException.class);
}

See the documentation of FluentWait for more info. But beware that this condition is already implemented in ExpectedConditions so you should use

WebElement element = (new WebDriverWait(driver, 10))
   .until(ExpectedConditions.elementToBeClickable(By.id("someid")));

Basic tutorial for waiting can be found here.

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