JavaScript Check if JS box exists with RSpec + capybara-webkit check exists in sql,check file exists with javascript,check

I'm using RSpec + capybara, and the capybara-webkit as driver. I have to check if a JS box exists in the page after clicking on a button, but with no results. If I use selenium as a driver, the test passes, but I need to use capybara-webkit.

I'm using

expect(page).to have_selector(#js_window)

My configuration is

Capybara.run_server = false
Capybara.default_selector = :css
Capybara.default_max_wait_time = 1
Capybara.javascript_driver = :webkit

RSpec.configure do |config|
 config.include Capybara::DSL
end
Answer:1

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