select 带有 RSelenium 的文本框

Question

启动 RSelenium

library(RSelenium)
RSelenium::startServer()
pJS <- phantom()
Sys.sleep(5) # give the binary a moment
remDr <- remoteDriver(browserName = 'phantomjs')
remDr$open()

去现场稍等一下

remDr$navigate("http://ideal-scope.com/online-holloway-cut-adviser/")
Sys.sleep(5)

现在，当我尝试在文本框中查找元素时

  depthElem <- remDr$findElements("name","depth_textbox")
  tableElem <- remDr$findElements("name","table_textbox")
  crownElem <- remDr$findElements("name","crown_textbox")
  pavilionElem <- remDr$findElements("name","pavilion_textbox")

...只是给了我一堆 list()

的对象

如果我做 findElement 而不是 findElements 我得到

Error:   Summary: NoSuchElement
 Detail: An element could not be located on the page using the given search parameters.

如何 select 这些文本框？为什么我不能通过搜索名称 select 他们？

Answer 1

findElements 方法 returns 没有元素时的空列表。该页面在 iframe 中包含您需要的内容。您需要先切换到 iframe，然后才能搜索元素：

remDr$navigate("http://ideal-scope.com/online-holloway-cut-adviser/")
# get iframes
webElems <- remDr$findElements("css", "iframe")
# there is only one
remDr$switchToFrame(webElems[[1]])

depthElem <- remDr$findElement("name","depth_textbox")
# > depthElem$getElementAttribute("name")
# [[1]]
# [1] "depth_textbox"
remDr$findElement("name","table_textbox")
crownElem <- remDr$findElement("name","crown_textbox")
pavilionElem <- remDr$findElement("name","pavilion_textbox")

select 带有 RSelenium 的文本框

select textbox with RSelenium

r

rselenium