Searching the visual appearance of a Web page?

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From	Dr J R Stockton <reply1600@merlyn.demon.co.uk.invalid>
Newsgroups	comp.lang.javascript
Subject	Searching the visual appearance of a Web page?
Date	Mon, 29 Feb 2016 23:14:48 +0000
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I have a reference to the body element of a local Web page, and can
assume that body.onload() has finished.  I also have a RegExp, which has
been defined from the value of an input type=text element.

I want to apply that RegExp to the whole displayed text, all at once or
piecemeal, and get all of the matches.  I have been using the match
method on body.innerText, body.innerHTML, or body.textContent, which was
good enough to do what I wanted, but not ideal.

For example, the text up<br>on in the HTML source must be treated as the
two words "up on" and not the one word "upon".  And, if practical,
"c&acirc;m" should be treated as a three-letter word.

The immediate aim is to use something like /\b[A-Z]{4,}\b/gi to find all
upper-case "word"s of four or more letters, in order to discover most of
the acronyms without too many false positives or negatives, so that a
list of them can be converted into, or used to check, a Glossary.

It can be assumed that the authors of the pages are not trying to delude
this searcher?

How should it best be done, in outline?

-- 
 (c) John Stockton, Surrey, UK.  ¬@merlyn.demon.co.uk   Turnpike v6.05   MIME.
 Merlyn Web Site <                       > - FAQish topics, acronyms, & links.

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Searching the visual appearance of a Web page? Dr J R Stockton <reply1600@merlyn.demon.co.uk.invalid> - 2016-02-29 23:14 +0000
  Re: Searching the visual appearance of a Web page? Martin Honnen <mahotrash@yahoo.de> - 2016-03-01 11:39 +0100
    Re: Searching the visual appearance of a Web page? Dr J R Stockton <reply1600@merlyn.demon.co.uk.invalid> - 2016-03-03 23:25 +0000
      Re: Searching the visual appearance of a Web page? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-03-03 16:27 -0800
        Re: Searching the visual appearance of a Web page? Dr J R Stockton <reply1600@merlyn.demon.co.uk.invalid> - 2016-03-05 23:37 +0000
  Re: Searching the visual appearance of a Web page? Bart Van der Donck <bart@nijlen.com> - 2016-03-02 00:49 -0800

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