getting no such element exception message - html

Question

i am using eclipse juno and testing the application actitime,which has a check box in login page "keepLoggedInCheckBox"
The HTML source of it,
<input type="checkbox" title="Do not select if this computer is shared"
id="keepLoggedInCheckBox" value="on" name="remember">
I am trying locate the check box "keepLoggedInCheckBox" by using ,
WebElement check = driver.findElement(By.id("keepLoggedInCheckBox"));
But getting this error,
Exception in thread "main" org.openqa.selenium.NoSuchElementException:
Unable to locate element:
{"method":"id","selector":"keepLoggedInCheckBox"}
i tried with xpath (//input[#id='keepLoggedInCheckBox']) ,also getting same error.
please help me, to solve this.

Answer 1

I have faced the same problem. The DOM looses the reference to the element in question. It can either be StaleStateReferenceException or NoSuchElementException. There are two ways to deal with the situation.
(Though my solution is in Java. The underlying concept is the same. )
By using the the following method, you can try clicking an element. If exception is thrown then catch the exception and try to click again until the element is present:
public boolean retryingFindClick(By by) {
boolean result = false;
int attempts = 0;
while(attempts < 2) {
try {
Actions action = new Actions(driver);
WebElement userClick = wait.until(ExpectedConditions.presenceOfElementLocated(by));
action.moveToElement(userClick).click().build().perform();
driver.findElement(by).click();
result = true;
break;
} catch(StaleElementReferenceException e) {
System.out.println("StaleElementReferenceException");
}
catch(NoSuchElementException e) {
System.out.println("No Such Element Found");
}
attempts++;
}
return result;
}

Answer 2

Please try this. I have added implicitlyWait which will allow your DOM content to load.
Note: Please replace Your URL with the exact URL.
WebDriver driver=new FirefoxDriver();
driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);
driver.get("Your URL");
driver.findElement(By.xpath("//*[#id='keepLoggedInCheckBox']")).click();