Search on page with javascript
<p>I have a html page, and I want to find on it some data, but main trouble is that page is generated on server, and I want to write javascript code on my local machine and run it. So how can I write and run on local machine javascript code, so that it will find text, or get element by id/class? </p>

<p>Note, this is important: only pure javascript, no libraries like jQuerys and etc! </p>

<p>Thank you.</p>
