JavaScript tips

 I made an SVG darker using an SVG filter I added the filter to the top-level 'defs' tag:     <defs id="defs4">       <filter id="my-dark-filter"                color-interpolation-filters="sRGB">         <feColorMatrix type="matrix"                         values="1 0 0 0 -0.5                                 0 1 0 0 -0.5                                0 0 1 0 -0.5                                0 0 0 1 0"/>       </filter> The values in the fifth column in the matrix vary from 1 for all-white to -1 for all-black. I then called the filter from the top-leve...

 My free website at 'freehostingeu.com' was down for several weeks. Other websites at their 'eu5.net' domain were down too. 'freehosteu.com' say the domain was suspended by the registry because the domain was abused. You have to hold your nerve with free websites. I used 'freehostingeu.com' as a backup to the free '000webhost.com'. 'freehostingeu.com' blocks pages with 'bad' words but sometimes these are innocent. One example was the 'itAu' in 'webkitAudioContext'. 'freehostingeu.com' used to offer the 'eu.pn' domain of the Pitcairn Islands. But the Islands said it was harming their reputation. I was very happy with '000webhost.com' and stayed for ten years before upgrading to the cheapest paid plan with their parent 'Hostinger'. I chose a starting 4 year plan which now seems very cheap. Hackers got 13 million passwords from '000webhost' in 2015. It was suggested that the pas...