RSelenium-如何获取节点的子节点号及其xpath

A. rvest 解决方案如下:

require(rvest)
your_xpath = "YOUR XPATH"
doc <- read_html(remDr$getPageSource()[[1]])
children <- doc %>% html_node(xpath=your_xpath) %>% html_children()

for (i in 1:length(children)){
  webElem <- remDr$findElement(using = 'xpath', sprintf("%s/*[%d]", your_xpath, i))
  if(classify_node(children[i]) == "click"){
    webElem$$clickElement()
  } else {...}
}