Question

I would like to extract text from HTML with pure Javascript (this is for a Chrome extension).

Specifically, I would like to be able to find text on a page and extract text after it.

Even more specifically, on a page like

https://picasaweb.google.com/kevin.smilak/BestOfAmericaSGrandCircle#4974033581081755666

I would like to find text “Latitude” and extract the value that goes after it. HTML there is not in a very structured form.

What is an elegant solution to do it?

Answer 1

There is no elegant solution in my opinion because as you said HTML is not structured and the words “Latitude” and “Longitude” depends on page localization.
Best I can think of is relying on the cardinal points, which might not change…

var data = document.getElementById("lhid_tray").innerHTML;
var lat = data.match(/((\d)*\.(\d)*)°(\s*)(N|S)/)[1];
var lon = data.match(/((\d)*\.(\d)*)°(\s*)(E|W)/)[1];