How to make a parser in Google Docs?

Question

JavaScript

Google spreadsheets have links to sites in column A.
Is it possible to write a script in Google spreadsheets that would take some code from these pages, i.e. for example, from some tags to others and write it to cells.
Through IMPORTXML, only the text can be parsed.

Answer 1

Use a bunch of IMPORTXML and XPath
=ImportXML("URL"/ячейка-с-URL, "XPath Expression")