Try the above in an index.html. However this tutorial is not about use of JavaScript to control HTML elements, see multitudes of other web tutorials for all that. JavaScript Console One of the first things we need is to get some debugging output. You can write to the browser JavaScript co...
DEMO: If you want to try this console.log() simulation, navigate here -> https://david.blob.core.windows.net/html5/HelloWebWorkersJSONdebug.htm <-Use cases and how to identify potential candidatesWeb Workers for which scenarios?When you browse the Web looking for sample usages of the Web...
Without AJAX, I might decide to refresh the entire page every 30 seconds, but with AJAX, I can just make a lightweight request to get the tiny bit of information I need.DisadvantagesUsing AJAX to submit forms isn't always the best bet. Asides from not really giving you a clear ...
Try it Yourself » The setInterval() Method ThesetInterval()method repeats a given function at every given time-interval. window.setInterval(function,milliseconds); Thewindow.setInterval()method can be written without the window prefix.
beforeEach(function() { console.log('before every test in every file'); }); # Delayed Root Suite If you need to perform asynchronous operations before any of your suites are run, you may delay the root suite. Run mocha with the --delay flag. This will attach a special callback funct...
("Error:"+ e)); } } }// Rewinds the audio file by 30 seconds.functionrewindAudio(){// Check for audio element support.if(window.HTMLAudioElement) {try{varoAudio = document.getElementById('myaudio'); oAudio.currentTime -=30.0; } catch (e) {// Fail silently but show ...
If we had more sources, it would try to play every single one on the list until all of them failed or one of them worked. In addition to the control attribute, the HTML5 audio tag also supports other optional attributes: loop Lets us loop the media file specified in the src attribute...
the less users drop out. Nowadays users are more impatient than they were when it was the era of ISDN lines and dial-up modems. So, any site taking more than 3 seconds to load will have around 30% user drop out. So, it’s absolutely important that you try whatever trick you have ...
Returns every nth element in an array. Use Array.filter() to create a new array that contains every nth element of a given array. const everyNth = (arr, nth) => arr.filter((e, i) => i % nth === nth - 1); Examples everyNth([1, 2, 3, 4, 5, 6], 2); // [ 2, ...
JavaScript import redis from 'redis'; const client = redis.createClient(); const channelName = 'valkey-channel'; (async () => { try { await client.connect(); console.log('Connected to Redis server'); await client.subscribe(channelName, (message, channel) => { console.log(`message "...