HTML | Robert James Metcalfe Blog

Viewport and CSS Calc Intersection Resize Tutorial

Yesterday’s Viewport and CSS Calc Intersection Algorithm Tutorial showed no issues with … mobile “pinch” and “spread” gestures … no issues surprisingly … but there were with … non-mobile “onresize” (of window) created issue of a misplaced yellow intersection HTML … Continue reading →

Viewport and CSS Calc Intersection Algorithm Tutorial

Do you eat “separatist style”? I used to, leaving the good stuff until last, until one day a grandparent kindly taught me the weakness with this system, quietly pinching the best stuff during the prelude period. The recent Viewport and … Continue reading →

Viewport and CSS Calc Primer Tutorial

Keeping on with some themes of yesterday’s Responsive Design Viewport Width Considerations Tutorial, today, we combine ideas around … (meta) viewport … and … (CSS) calc … in a “proof of concept” web application we are using to explore ideas … Continue reading →

Responsive Design Viewport Width Considerations Tutorial

Regarding our Landing Page series of HTML/Javascript/CSS webpages here at RJM Programming, we’re streamlining our device width (Responsive Web Design) considerations of … Mobile Friendly Meta Viewport Tag Zoom Tutorial by now going with … Was .. Now is … … Continue reading →

Smooth Spinner Game Tutorial

Adding onto the recent Onmouseover and Onmouseout Event Monitoring Tutorial … Simple Maths Timer Game Onmouseover and Onmouseout Monitor … we add, today, a new … Smooth Spinner Game … test of a user’s control, nerve and patience, where they … Continue reading →

Onmouseover and Onmouseout Event Monitoring Tutorial

Perhaps you were reading yesterday’s Maths Ouija Board Quiz Primer Tutorial and wondering “what gives with the ‘mo_me_rt_t.htm’ name of the web application”? Well, the original inspiration at “Moving the mouse: mouseover/out, mouseenter/leave”, thanks, was for an Onmouseover and Onmouseout … Continue reading →

Maths Ouija Board Quiz Primer Tutorial

We’re not really using a ouija board with today’s Maths Quiz web application, but if you use the mouse or trackpad means by which to answer the Maths arithmetic, it can feel like an ouija board in play. We’ve arranged … 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

Viewport and CSS Calc Intersection Resize Tutorial

Viewport and CSS Calc Intersection Algorithm Tutorial

Viewport and CSS Calc Primer Tutorial

Responsive Design Viewport Width Considerations Tutorial

Onmouseover and Onmouseout Event Monitoring Tutorial

Maths Ouija Board Quiz Primer Tutorial

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