There's a hidden input field in which I'm trying to insert a specific date value. The field originally produces a value, from which a user can select an appropriate value. The page's source code looks like this:
<div id="change_img">
<img width="80" height="30" border="1" src="http://jntuh.ac.in/results/images/CaptchaSecurityImages.php?width=100&height=50&characters=5&code=ryyrh">
<br>
<input id="code" type="hidden" value="ryyrh" name="code">
</div>
Use WebElement's getAttribute method. In your case it will be:
WebElement hiddenInput = driver.findElement(By.id("code"));
String value = hiddenInput.getAttribute("value");
If for any reason you need to do it with javascript (your question specifically asked for js) then this code should work:
String script = "return document.getElementById('code').getAttribute('value');";
String value = ((JavascriptExecutor) driver).executeScript(script).toString();
div with display: none style and on <input type='hidden' ... /> tag. I may be missing something though. Could you please provide example page and a reference to a tag on which the javascript provided returns null?I tested this solution in C# and it works. I am then able to parse the returned string to find and verify what I need.
http://yizeng.me/2014/04/08/get-text-from-hidden-elements-using-selenium-webdriver/
So in the example in the question you would get the innerHTML of the visible parent "change_img" element which will include the hidden element.
Solution in Python:
script = "return document.getElementById('code').getAttribute('value');";
print(driver.execute_script(script))
Solution in C#:
string script = "return document.getElementById('code').getAttribute('value');";
string value = ((IJavaScriptExecutor)driver).ExecuteScript(script).ToString();
