One question per day _javascript. Using JS operation frameset Frameset object to implement shopping cart?

Specific requirements:

1. The framework contains the top and bottom two frames, the shopping cart, the following is a list of items, click on the product list to purchase, to achieve the increase in the number of items in the shopping cart and pass the product ID

Implementation ideas:

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Specific code:

Shopping.html

<! DOCTYPE html>
Shoppingcart.html
<! doctype html>
   productinfo.html  
<! doctype html>

There are pictures and phases:
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Summary description:
1. Each frame in the page has its own window object, saved in the Frames collection, and the variables or functions defined by all frame pages automatically become members of the corresponding frame window object
2. You can get the specified frame object through a special global object, the Self object always points to the current frame object, the top object always points to the outermost frame, the parent object always points to the upper frame object, and when the page has no frame, parent/top/ Self is equal to the Window object, which can be used for data communication before each frame is positioned.

This article is from the "ζ Automated operation and maintenance development Road ζ" blog, please be sure to keep this source http://xmdevops.blog.51cto.com/11144840/1853697
One question per day _javascript. Using JS operation frameset Frameset object to implement shopping cart?