javascript - Preload tag IMG without specifying the name of the images -

I need a script that loads all the images of the web page, and then displays it. I have to script preload all tags and then make a web page visible.

I have a strangely tried script like the JPrealoder or jQuery plugin, but I want to type in the image without specifying the name of the image. Preload a array of jpg and all img tags!

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Code> $ (window) .load (function () {$ (body) .show ();});