You’ve done most of the work already. V8 doesn’t provides an implementation for setTimeout because it’s not part of ECMAScript. The function you use is implemented in timers.js, which creates an instance of a Timeout object which is a wrapper around a C class. There is a comment in the source describing how they are … Read more
Yes, it is. The string must be eval‘d, which is evil (and very slow). It also prevents you from using local variables in the callback.
setTimeout and such aren’t in the ECMAScript specification because they’re not JavaScript features. They’re features of the browser environment’s window object. Other environments (Windows Scripting Host, NodeJS, etc.) won’t necessarily have those features. The W3C has been trying to standardize the window object and its various features (including setTimeout), the latest is in the timers … Read more
This will make the second function wait 2 seconds (2000 milliseconds) before executing: $(‘.icon’).hover(function() { clearTimeout($(this).data(‘timeout’)); $(‘li.icon > ul’).slideDown(‘fast’); }, function() { var t = setTimeout(function() { $(‘li.icon > ul’).slideUp(‘fast’); }, 2000); $(this).data(‘timeout’, t); }); It also clears the timeout when the user hovers back in to avoid crazy behavior. This is not a very … Read more
What Jason said is totally correct in his answer but I thought I would give it a shot, to better clarify. This is actually a classic closure problem. Typically it would look something like: for(var i = 0; i < 10; i++){ setTimeout(function(){ console.log(i); },i * 1000) } The novice would expect the console to … Read more
Is the code contained in a function? function test() { setTimeout(…); // code that you cannot modify? } In that case, you could prevent the function from further execution, and then run it again: function test(flag) { if(!flag) { setTimeout(function() { alert(); test(true); }, 5000); return; } // code that you cannot modify }
As always with Android there’s lots of ways to do this, but assuming you simply want to run a piece of code a little bit later on the same thread, I use this: new android.os.Handler(Looper.getMainLooper()).postDelayed( new Runnable() { public void run() { Log.i(“tag”, “This’ll run 300 milliseconds later”); } }, 300); .. this is pretty … Read more
For these types of questions, it is often useful to just go look at how node.js handles timers in the source code. What you will find is that node.js keeps one or more linked lists of its own internal timer objects and all timers set to occur at the same time share one libuv timer. … Read more
Be carefull.. your first code would block JavaScript event loop. Basically in JS is something like list of functions which should be processed. When you call setTimeout, setInterval or process.nextTick you will add given function to this list and when the right times comes, it will be processed.. Your code in the first case would … Read more
As far as I’ve tested, it just stops and resumes after the computer wakes up. When the computer awakes the setInterval/setTimeout is unaware that any time passed. I don’t think you should rely on the accuracy of setTimeout/Interval for time critical stuff. For google chrome I discovered recently that any timeout/interval (that is shorter than … Read more