NoSuchElementException - Unable to locate element

Question

I have an input box like the one I am using here to enter my question, and whose HTML is

Answer 1

If you are getting NoSuchElementException as your provided exception, There may be following reasons :-

• May be when you are going to find element, it would not be present on the DOM, So you should implement WebDriverWait to wait until element visible as below :-

  WebDriverWait wait = new WebDriverWait(driver, 10);
  WebElement Category_Body = wait.until(ExpectedConditions.visibilityOfElementLocated(By.id("tinymce")));
   Category_Body.sendKeys("Android Smart Phone - 16GB");
  

• May be this element is inside any frame or iframe. If it is, you need to switch that frame or iframe before finding the element as below :-

  WebDriverWait wait = new WebDriverWait(driver, 10);
  
  //Find frame or iframe and switch
  wait.until(ExpectedConditions.frameToBeAvailableAndSwitchToIt("your frame id or name"));
  
  //Now find the element 
  WebElement Category_Body = wait.until(ExpectedConditions.visibilityOfElementLocated(By.id("tinymce")));
   Category_Body.sendKeys("Android Smart Phone - 16GB");
  
  //Once all your stuff done with this frame need to switch back to default
  driver.switchTo().defaultContent();