how to calculate page rendering time with or without any javascript or with multple javascript seperately
<p>how to calculate page rendering time with or without any javascript or with multiple JavaScript separately?</p>

<p>I want to know how much page will go slow if i use any javascript/jquery with plugin/ multiple javascript/jquery plugin files etc.?</p>

<p>javascript code in any form inline, in-page code, external file.</p>
