jQuery loading spinner for loading all element loads completely

In Gmail log in, after click submit the log in form, we will see a progress bar until all of the html and javascript of google mail page loads completely. How to make it with jquery? Thank开发者_C百科s

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A quick Google search got me a couple of hits. But I think QueryLoader looks pretty neat. It lets you preload the whole page or parts of it.

To quote the author:

This preloader has it all. Loading bar, custom animations and getting all images included in the web page.

I hope it was kind of you were looking for.