FAQ
I forgot to add: if you only care about extracting the <script>s,
<style>s and <meta>s of an HTML document, then the HTML tokenizer
might be a better match than the HTML parser. The tokenizer is lower
level: it returns a stream of tokens instead of a complete parse tree,
but it gives you []byte instead of string, which means it makes far
fewer allocations. Note that you are responsible for copying the
tokenizer's []byte somewhere if you want it to last past the life of
the current token. See https://godoc.org/golang.org/x/net/html

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