QLsteve

Hi Niche, << It's usually always very bad practice to click a button connected to a file from an unknown source. >> Yes, that is why I always use proprietary checking software to guard against the risk... I've neen exchanging files frequently since the '80s, and never seen a hint of a virus yet... Best Regards, QL Steve.

epicycle2.html Hi Niche, Hope I have done it right this time, using the code <> symbol above. Please refer to my posting of sat 01:07 for details of the relevant section needing attention. I would be very grateful if you could advise, as this problem is totally blocking any further projects I have in mind. Many thanks for your interventions.

Hi Niche, Thank you for replying to my plea for help. I attatch the complete file which will run on a PC under Firefox, but unfortunately not Chrome. The program was originally written in BASIC. The guts of it are in the core() function, called on line 93. I would hope to be able to implement a short pause of graphics drawing on lines 94 and 121. on lines 97-100, the alert() needs to be got rid of, as on my smartphone the popup hides the graphics.... M waits() function does pause the program, but I can find no way to pause the graphics, other than by using alert(

HI, It has been suggested that I try asynchronous functions, but I have not yet fully mastered that technique. Timeouts do pause code, but do NOT force graphics to be shown on screen as they are calculated..... Should I post my code on the forum, in as much as it works so far ? Any suggestions would be greatly appreciated.

I am just getting started in JavaScript, and am trying to convert programs written in BASIC into JavaScript. In a program to display 'arabesque' graphics, BASIC allows PAUSES between displayed sequences, each calculated within nested loops. My attempts to do this in JavaScript have failed, as FireFox will not pause except by using 'prompt' or 'alert' to show intermediate images. Chrome will not display the graphics at all in this case, as the screen is all blank. (My aim is to display arabesques on PCs, tablets or smartphones....) I have tried using setInterval and setTimeo