Selenium Webdriver - unable to click on button

Question

HTML code:

<div class="buttonBG">  
<input type="button" onclick="window.location.href='?mod=eA&amp;act=00001';"        class="buttonGreen" value="TK">         
<input type="button" onclick="ttoggle('carianDiv');" class="buttonGreen"   value="CK"> 
</div> 

Below is my java code, when I try with below code. Can I know whats wrong is in my selenium webdriver code:

driver.findElement(By.xpath("//input[@class='buttonGreen' and  contains(@onclick, 'window.location.href='?mod=eA&act=00001')]")).click();

Answer 1

Try to search by value

driver.findElement(By.cssSelector("[value='TK']")).click();

And for what's wrong, you are searching for ?mod=eA&act=00001 when in the html its

?mod=eA&act=00001

Edit

Another solution is to insert the buttons to list and click by index:

List<WebElement> buttons = driver.findElements(By.className("buttonGreen"));
buttons.get(0).click();

You can also try using explicit wait

WebDriverWait wait = new WebDriverWait(driver, 10);
wait.until(ExpectedConditions.visibilityOfElementLocated(By.cssSelector("[value='TK']")).click();

This will wait up to 10 seconds for the button to be visible before clicking on it. You can change the selector or time span.

Answer 2

Try using XPath instead of CSS

driver.find_element(By.XPATH, '//input[@onclick=\'window.location.href=\'?mod=eA&act=00001\';\']').click()

Edit

Here is the code to switch to iFrame,

driver.switchTo().frame("frame_name");

NOTE : After completing the operation inside the iframe, you have to again return back to the main window using the following command.

driver.switchTo().defaultContent();