title: scrapy plash set input value?
body: <p>I've succesfully been able to load javascript generated html with scrapy-splash. Now I want to set a couple input value's which are not part of a form. As soon as I put in a value the content on the site changes. I haven't found a way to set the input value's and rescrap the adjusted html. Is this possible?</p>
  
  <pre><code>class ExampleSpider(scrapy.Spider):
  name = "example"
  allowed_domains = ["example.com"]
  start_urls = (
      'https://example.com',
  )
  
  def start_requests(self):
      for url in self.start_urls:
          yield scrapy.Request(url, self.parse, meta={
              'splash': {
                  'endpoint': 'render.html',
                  'args': {'wait': 3}
              }
          })
  
  def parse(self, response):
      page = response.url.split("/")[-2]
      filename = 'screener-%s.html' % page
      with open(filename, 'wb') as f:
          f.write(response.body)
      self.log('Saved file %s' % filename)
  </code></pre>