| 摘要 |
Persistence of information and programming from one web page to another is gained by loading an applet or an Active X object repeatedly by addition of applet or Active X object code to the HTML code of a plurality of web pages. The persistence is also spread, beyond the web pages that repeatedly load the said applet or Active X object, by forming a pseudo-constructor with which an object, such as a graphical user interface, is generated by the initial loading and execution of the applet or Active X object, and persists even after the web page which loaded the applet or Active X object has been closed. In an exemplary application of the techniques, a shopping cart is generated that keeps track of the quantity and prices of items selected from a plurality of web pages. The cart operates without any interaction with the host server or other source of the web pages, apart from initial downloading of the applet or Active X object and final presentation of purchased items. Information about available items is also preferably hardcoded into the original HTML page, and not downloaded separately from the server. The techniques can also be used to cache database requests, thus avoiding the need for any server-client interaction beyond a first initial download. For example, this method of caching can be used to store, on the client, optional price updates to the products which are purchased in the shopping cart.
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