Why does parsing HTML with Nokogiri return a blank?

To answer the question asked, link returns "", because it's an empty NodeSet. In other words, Nokogiri didn't find what you were looking for. A NodeSet behaves like an Array, so when you try to puts an empty array you get "" .

Short answer to: "Why is it, if aa = idSongs. Text does puts link return " "?" Because you're trying to find an input element that has the same dom id as the div you've already matched on, which doesn't exist and therefore Nokogiri just gives you an empty string.

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