is it possible to write web crawler in javascript?

Question

I want to crawl the page and check for the hyperlinks in that respective page and also follow those hyperlinks and capture data from the page

Answer 1

You can make a web crawler driven from a remote json file that opens all links from a page in new tabs as soon as each tab loads except ones that have already been opened. If you set up a with a browser extension running in a basic browser (nothing runs except the web browser and an internet config program) and had it shipped and installed somewhere with good internet, you could make a database of webpages with an old computer. That would just need to retrieve the content of each tab. You could do that for about $2000, contrary to most estimates for search engine costs. You'd just need to basically make your algorithm provide pages based on how much a term appears in the innerText property of the page, keywords, and description. You could also set up another PC to recrawl old pages from the one-time database and add more. I'd estimate it would take about 3 months and $20000, maximum.