Rvest：来自 Xpath 的 select 内容

Question

我有以下源代码：

<div class="re__section-body re__detail-content js__section-body js__pr-description js__tracking" trackingid="lead-phone-ldp" trackinglabel="loc=Sale-Listing Details-body,prid=30449316">
khu vực dao động từ 45tr - 60tr/m2.<br>Liên hệ tôi chính chủ SĐT: 
<span class="hidden-phone hidden-mobile m-cover js__btn-tracking" tracking-id="lead-phone-ldp" tracking-label="loc=Sale-Listing Details-body,prid=30449316" raw="0935686566">0935686***</span>.
</div>

我尝试在使用此代码时提取原始元素，但结果为空

html_nodes(xpath = "//span[@class = 'hidden-phone hidden-mobile m-cover js__btn-tracking'") %>% 
html_attr("raw") %>% 
html_text()

我该怎么做？非常感谢大家

Answer 1

让 foo.html 成为您要从中提取节点属性的 html 文件：

library(rvest)
library(magrittr)

read_html("foo.html") %>%
  html_nodes(xpath = "//span[@class='hidden-phone hidden-mobile m-cover js__btn-tracking']") %>%
  html_attr("raw") %>%
  as.numeric()

html_attr("raw") returns 已经是一个字符，所以不需要后续的 html_text().

Rvest：来自 Xpath 的 select 内容

Rvest: select content from Xpath

xpath

r

web-scraping

rvest