Python selenium how to execute execute_script on a JavaScript element with arguments

Question

I'm trying to download documents from a website. When I inspect the element in my browser, this is what I get:

<td width="3%" align="left" id="tdvPDF0" colspan="3">
<a href="#" onclick="javaScript:downloadClicked('JRAOB2SNRXEAPX2', 0, 'PDF'); return false;" onmouseover="window.status='CTNF'; return true" onmouseout="window.status=''; return true">PDF</a>
/&nbsp;
<a href="#" onclick="javaScript:downloadClicked('JRAOB2SNRXEAPX2', 0, 'XML_LINK'); return false;" onmouseover="window.status='CTNF'; return true" onmouseout="window.status=''; return true">XML</a>
/&nbsp;
<a href="#" onclick="javaScript:downloadClicked('JRAOB2SNRXEAPX2', 0, 'DOCX'); return false;" onmouseover="window.status='CTNF'; return true" onmouseout="window.status=''; return true">DOCX</a>
</td>

I would like download all three documents, i.e. the PDF, XML, and DOCX. This JavaScript can accept three arguments. In this case they are: 1. JRAOB2SNRXEAPX2 (string) 2. 0 (integer) 3. PDF (string)

I have no idea of how to ascertain the correct input for the first argument (in this example: "JRAOB2SNRXEAPX2")

I would like to have my code work regardless of the first argument.

Previously, when I've encountered JavaScript functions I used the following:

driver.execute_script(name_of_JavaScript_script())

that would generally work, however I have never encountered a JavaScript with arguments as in this case, e.g. downloadClicked('JRAOB2SNRXEAPX2', 0, 'PDF')

I tried the following without success:

driver.execute_script(downloadClicked('JRAOB2SNRXEAPX2', 0, 'PDF'))
driver.execute_script(downloadClicked(''JRAOB2SNRXEAPX2', 0, 'PDF''))
driver.execute_script(downloadClicked('JRAOB2SNRXEAPX2', 0, 'PDF')); return false;

and many other similar options.

I've also tried:

javascript = driver.find_element_by_id('tdvPDF0').click()
driver.execute_script(javascript)

In addition I've tried:

driver.find_element_by_id('tdvPDF0').click()

The code for the function currently looks like this:

def private_pair_ifw_downloader(driver, application_number, pause=1):
    private_pair_enter_application(driver, application_number)
    time.sleep(pause)
    driver.execute_script('submitTab("ifwtab")')
    time.sleep(pause)

    driver.execute_script('"javaScript:downloadClicked(''JRAOB2SNRXEAPX2', 0, 'PDF''); return false;"')

I expect for the code to invoke the JavaScript function which in turn should download the PDF file however, I received the following error:

Traceback (most recent call last): File "C:/Workspaces/patents_repo/USPTO_scraper/uspto_private_pair_scraper.py", line 41, in private_pair_ifw_downloader(driver, '15723211') File "C:\Workspaces\patents_repo\utils\web_utils.py", line 211, in private_pair_ifw_downloader driver.execute_script('"javaScript:downloadClicked(''JRAOB2SNRXEAPX2', 0, 'PDF''); return false;"') File "C:\Users\eitan\Anaconda3\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 636, in execute_script 'args': converted_args})['value'] File "C:\Users\eitan\Anaconda3\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 321, in execute self.error_handler.check_response(response) File "C:\Users\eitan\Anaconda3\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response raise exception_class(message, screen, stacktrace) selenium.common.exceptions.WebDriverException: Message: unknown error: Runtime.evaluate threw exception: SyntaxError: Unexpected identifier (Session info: chrome=76.0.3809.100)

supputuri · Accepted Answer · 2019-08-24 18:15:15Z

1

All you have to do is wrap your input to execute_script in double quotes.

driver.execute_script("downloadClicked('JRAOB2SNRXEAPX2', 0, 'PDF');")

answered Aug 24, 2019 at 18:15

supputuri

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2 Comments

Eitan Waks Over a year ago

How do I handle the issue with regards to the first argument? Do I have to input some type of string here? What do I do if I don't know the string?

supputuri Over a year ago

you can pass the values as arguments as part of execute_script.

pguardiario · Accepted Answer · 2019-08-25 00:21:30Z

0

If you don't know the string you can try something like:

driver.execute_script('document.querySelector("a[onclick*=PDF]").onclick()')

answered Aug 25, 2019 at 0:21

pguardiario

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