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AJAX for beginners

The advent of AJAX (Asynchronous Javascript and XML) has opened up new doors to web developers, allowing for interaction with and display of database and other external data in a web document, without the need to load a new page.

This is my tutorial for beginners wanting to use AJAX on their websites.

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Point in a Polygon

I just though I might share a function that I found in the course of trying to capture accurate mouse events in a grid Map editor for my isometric game. The function can be used to find out if a given coordinate falls within a polygon, defined by it’s bounding points.

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z-index Organization strategy

In my latest adventure in the land of Javascript I have streamlined my strategy for organizing my z-index structure for complex applications. Complex being where “windows” and various items may need to be laid over the top of other elements in the DOM. I thought I would share this strategy.