Watir-Webdriver throwing Unknown Javascript Error

Question

I'm using watir for some automation. I want to select a value from select list so I did-- $browser.select_list(:id,"id_of_select_list").select("text")

this, but this is giving me error as

`Selenium::WebDriver::Error::UnknownError: '[JavaScript Error: "a is null" {file:"file:///tmp/webdriver-profile20131118-31369-q5lb08/extensions/fxdriver@googlecode.com/components/command_processor.js" line: 7677}]' when calling method: [nsICommandProcessor::execute]`

This error interestingly comes only in case of firefox, when I use chrome everything works fine. Any thoughts...

Answer 1

尝试这样的事情xyz_select_list = $ browser.select_list（：id，“ id_of_select_list”）。wait_until_present xyz_select_list.click