HTML | Robert James Metcalfe Blog

Canvas Annotations and Datetime or Number Sequences Tutorial

Today we’ve added some … two canvas click based … number … or … datetime sequenced text annotation canvas placements … and you’ll probably guess the nature of our interest if we direct you to HTML Square Horizontal Rule Image … Continue reading →

Page Not Found Error Message Email Subject Tutorial

Why, with today’s tutorial, are we conflating two quite disparate subjects … HTTP (ie. Hypertext Transfer Protocol) Error Code 404 “Page Not Found” or “Server Not Found” …with … Email Subject lines … into the one tutorial topic? Well, as … Continue reading →

Local Datetime Token Subject Integrations Tutorial

On top of the Localized Datetime email subject line integrations of yesterday’s Gimp Guillotine Local Datetime Token Subject Tutorial we have been integrating … the changed intl_use.js … calling on … intl_use.html Datetime Internationalizations … in their relationships to (integrations … Continue reading →

Gimp Guillotine Local Datetime Token Subject Tutorial

Let’s combine work of … the recent Gimp Guillotine Token Subject Tutorial … with … the recent Colour Systems Localized Internationalized Date Emails Tutorial … and its promise … we saw this integration as a “test guinea pig” going onto … Continue reading →

Merging Photos via Remote Image Urls Tutorial

On revisiting the Merging of Photos web application of Merging Photos via Gimp and iPhone Camera Animation Tutorial we wanted to improve the situation for Remote Image Urls (ie. absolute Urls not on the rjmprogramming.com.au domain), where we could get … Continue reading →

Colour Systems Inline HTML Email Collaboration Tutorial

Yesterday’s Colour Systems Inline HTML Email Tutorial featured Inline HTML Email functionality, that we find very useful, but almost denuded of personalization. We think adding personalization aspects to a web application should never be mandatory to its functionality, but on … Continue reading →

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Latest Comments
1. Sean Zhang on Cocos2d Mac Game Hello World Cocos Creator TutorialNovember 14, 2026
  The Hello World starting point makes it easier to separate project setup from asset problems. A useful follow-up would be importing a small sprite sheet and checking frame dimensions, ordering and padding before adding animation logic. Previewing the individual frames first can help identify whether a problem comes from the artwork or from the engine configuration.
2. Hello Team on Javascript Course Primer TutorialNovember 13, 2026
  The distinction between course-driven and immersion-driven learning is useful. A small extension to the australia.htm exercise would be a set of named map markers and a text filter: first update the visible markers on an input event, then add a collected/uncollected toggle, and finally persist only that toggle state in localStorage. That gives beginners a concrete reason to learn arrays, DOM updates and browser storage without needing PHP or MySQL first. It is also worth testing empty searches, a page reload and disabled storage separately; those are different failure cases. Disclosure: we maintain the GTA 6 interactive map. I am suggesting it as an example of a map-and-progress interface, not claiming that we used the tutorial code. Would you introduce persistence after the first working interaction, or keep the initial exercise entirely stateless?
3. tooloteca on Tabular Single Row Radio Play TutorialNovember 12, 2026
  What I find most interesting here is how honestly the post names the hard part: getting focus to work with [element].click() and [element].blur() is the kind of detail that looks trivial until you actually try to drive a page this way. The single-row table that deliberately overflows to the right also makes sense as a design choice, since a radio playlist needs to be scrolled through rather than squeezed into one screen. And the payoff — clicking one song link and having the songs play in sequence and loop back through the list — is a neat reward for all that plumbing with the audio-only YouTube player.
4. Aleister on Tabular Single Row Radio Play TutorialOctober 22, 2026
  I like the single-row radio-play approach for keeping the controls compact while still making each selection clear. When I’m checking a calculation alongside a tutorial, I use StepStat to see the intermediate steps; how do you handle the layout when the playlist gets much longer?
5. anagrampuzzle on Tabular Single Row Radio Play TutorialOctober 18, 2026
  The idea of mapping a video's key scenes, mood, pacing, and audio before production resonates with me — it's a lot like working out an anagrampuzzle, where the same pieces only make sense once you rearrange them into the right order. Do you usually sketch the mind map before or after the script is locked?

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Tag Archives: HTML

Canvas Annotations and Datetime or Number or Emoji Sequences Tutorial

Canvas Annotations and Datetime or Number Sequences Tutorial

Page Not Found Error Message Email Subject Tutorial

Local Datetime Token Subject Integrations Tutorial

Gimp Guillotine Local Datetime Token Subject Tutorial

Merging Photos via Remote Image Urls Tutorial

Numbers Guessing Game

Your Numbers Game

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