我对R相当精通，但是对javaScript和其他语言一无所知。我想访问有关此公开可用数据集的信息（http://fyed.elections.on.ca/fyed/zh-
CN/form_page_en.jsp）。尤其是，我在数据框中列出了几千个（A1A1A1）形式的邮政编码。我想将这些邮政编码中的每一个都提交到此网站，然后提取返回的选举区的名称。RSelenium似乎很理想，但是我无法弄清楚如何使JavaScript正常工作。我正在使用R
3.0.3和RSelenium_1.3的Mac OS 10.9.5。Firefox是第33版，Selenium是2.44。以下脚本有效。

require(RSelenium)
checkForServer()
startServer()
remDr<-remoteDriver()
remDr$open()
remDr$getStatus()
remDr$navigate("http://fyed.elections.on.ca/fyed/en/form_page_en.jsp")

#After inspecting the source code, you can see the input box has the id 'pcode', for postal code
webElem<-remDr$findElement(using = 'id', value = "pcode")
webElem$getElementAttribute('id')

#This is where I am stuck
remDr$executeScript(script='arguments[0].click(m1p4v4)', list(webElem))

#Utlimately, I have a list of several thousand postal codes, so I would like to create a loop     through to extract all the district names that are stored on the pages that are returned with a successful javascript (see previous command). Three real postal codes that return results are as follows:  
p.codes<-c('m1p4v4', 'n3t2y3', 'n2h3v1')

我觉得我只是不了解使这项工作所需的javascript命令或executeScript的语法。我将不胜感激。