I would like to create an HTML form that is resistant to bots. This could be a classic comment form or really any web-accessible form. In most cases, requiring authentication and an authorization service (such as OAuth) would be sufficient to protect a back-end web service. But what if you have a publicly accessible web […]
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HTML + CSS + JavaScript Lessons
I would like a very simple introduction to web development, from the basics of HTML and CSS, to the proper use of JavaScript; and all without getting bogged down in complicated textbooks. I’ve been working with HTML, CSS, and JavaScript (as well as dozens of programming languages in more environments than I can remember) for […]
scripting Photoshop for stop motion
I would like a simple and quick way to save a copy of an image in Photoshop, with an auto-incrementing filename. Ideally, a single button to capture a frame in a stop motion animation. In other words, I would like to save a copy of the working image as a JPEG without any interactive prompts […]
HTML5 canvas Mandelbrot
I would like to create an animated Mandelbrot visualization using JavaScript on an HTML5 <canvas> element. The Mandelbrot set, popularized by Benoît Mandelbrot, is the set of complex numbers that remain bounded under the function zn+1 = zn2 + c. This is known as an escape function; that is, regardless of the size of n, […]
javascript keyboard buffer, part 4
Previously, we created a JavaScript keyboard buffer that can edit text in a static html page as well as play back each key as it was typed. I would like to combine all of this into a single JavaScript include called keylogger.js, and rather than specify each div that I want to edit I’d like […]
css opacity in javascript
I want register JavaScript events to toggle CSS opacity on selectable images. For example, given a div with a list of images like the following, <div id="foo_images"> <img src="foo.jpg" /> <img src="bar.jpg" /> <img src="baz.jpg" /> … </div> I would like these images to be 50% transparent but 80% visible during a mouseover. I would […]
html footer at the bottom
I want the footer of an html page to never be higher than the bottom of the browser window. In other words, if there’s not enough content to fill a webpage, I want the footer to be at the bottom of the page (rather than hovering underneath the content). See this example. Assuming a standard […]
scraping and parsing html
I would like to read J. Krishnamurti books on my Kindle. Unfortunately, no ebooks were available although I did find that jkrishnamurti.org has an extensive collection of books on their website. At present there is no full download, only a per-chapter html viewer, and some of the books ran over 80 chapters, which is more […]