V8 cheerio rvest example

cheerio.R

# Proof of concept of using V8 to parse HTML in R
# Example taken from rvest readme
# Jeroen Ooms, 2015

library(V8)
stopifnot(packageVersion("V8") >= "0.4")

# Get Document
html <- paste(readLines("http://www.imdb.com/title/tt1490017/"), collapse="\n")

# Initiate Cheerio
ct <- new_context()
ct$source("https://raw.githubusercontent.com/jeroenooms/js/master/inst/lib/cheerio.min.js")

# Parse HTML
ct$assign('html', html)
ct$assign('lego_movie', I('cheerio.load(html)'))
ct$get('lego_movie("strong span").text()')

# Play around some more:
ct$console()