JavaScript-about Universal module splicing Html,css,img,js

Most of the recent projects, mostly long, so want to put some individual modules such as a module (may contain img,css,html,js), B module (may contain css,html) extracted; do a backstage, each individual module directly click or combination can be AB ... The module is put into a page, can be previewed, and then the page can be downloaded. Easy to use for some simple thematic live pages, quickly throw to the back of the child boots!
Now do not know how to start, trouble recommending the use of tools, or this convenient information? Want to know how to splice, and how to manage these modules?
The approximate process and function that you want to do for the time being.

A module

B Module

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Most of the recent projects, mostly long, so want to put some individual modules such as a module (may contain img,css,html,js), B module (may contain css,html) extracted; do a backstage, each individual module directly click or combination can be AB ... The module is put into a page, can be previewed, and then the page can be downloaded. Easy to use for some simple thematic live pages, quickly throw to the back of the child boots!
Now do not know how to start, trouble recommending the use of tools, or this convenient information? Want to know how to splice, and how to manage these modules?
The approximate process and function that you want to do for the time being.

A module

B Module

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