RSelenium:抓取一个完整的可扩展表 [英] RSelenium: scraping a FULL expandable table

问题描述

基于这个问题，OP想要从这个页面中抓取所有控股"表 - 向下滚动到黄色部分.该表显示前 10 行，但可以扩展到更多行.

Based off this question, the OP wants to scrape the table "All Holdings," from this page - scroll down to the yellow part. The table shows the first 10 rows, but can expand to quite a few more.

当我们想要整个表时，我的 rvest 和 RSelenium 解决方案都只取前 10 行.我的代码:

Both of my rvest and RSelenium solutions only take the first 10 rows, when we want the entire table. My code:

注册码

library(tidyverse)
library(rvest)

etf_url <- "http://innovatoretfs.com/etf/?ticker=ffty"

etf_table <- etf_url %>%
  read_html %>%
  html_table(fill = T) %>% 
  .[[5]]

RSelenium 代码

library(RSelenium)
library(rvest)

remDr <- remoteDriver(port = 4445L, remoteServerAddr = "localhost",
                  browserName = "chrome")
remDr$open()
remDr$navigate("http://innovatoretfs.com/etf/?ticker=ffty")
page <- read_html(remDr$getPageSource()[[1]])
table <- html_table(page, fill = TRUE, header = T)
table[[5]]

我们怎样才能得到 FULL 表?谢谢.

How can we get the FULL table? Thanks.

推荐答案

以下应该扩展表格 - 没有在 Selenium 中测试它，但它应该可以工作.

Following should expand the table - didn't test it in Selenium but it should work.

remDr$executeScript("__doPostBack('ctl00$BodyPlaceHolder$ViewHoldingsLinkButton','')", args = list())

这篇关于RSelenium:抓取一个完整的可扩展表的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！