html - Is "Page Source" BEFORE or AFTER JavaScript has been rendered?

Question

In Firefox there is a menu item that displays "Page Source": View | Page Source (Ctrl+U). In Internet Explorer there is a similar function.

When you invoke it, it displays a nicely formatted and syntax-highlighted collection of HTML (and JavaScript) code.

What I don't know is whether this HTML (viewable in the Page Source) is the result of pre-processing of the JavaScript (resulting in modification of the original raw HTML) or just raw as received by HTTP GET.

Answer 1

The "View Source" code is the code before any JavaScript is applied.

Firefox's Web Dev toolbar will allow you to view the resulting post-JavaScript source code from the View Source > View Generated Source menu option.