I have just found that in react this.setState() function in any component is asynchronous or is called after the completion of the function that it was called in.  Now I searched and found this blog (setState() State Mutation Operation May Be Synch...

I am thinking about it and this is what I came up with:  Let's say we have a code like this:  console.clear(); console.log("a"); setTimeout(function(){console.log("b");},1000); console.log("c"); setTimeout(function(){con...

Is it a deliberate design decision or a problem with our current day browsers which will be rectified in the coming versions?...

I have a question about the single threaded nature of Javascript.  console.log("1"); setTimeout(function(){console.log("2");},3000); console.log("3"); setTimeout(function(){console.log("4");},1000);   The result of t...

I'm curious about the possibility of damaging localStorage entry by overwriting it in two browser tabs simultaneously. Should I create a mutex for local storage? I was already thinking of such pseudo-class:  LocalStorageMan.prototype.v = LocalSto...

Does anyone know what the memory and threading models are in nodejs?  In particular, is ii++ atomic? Does it behave as if ii were volatile in Java 1.5, in Java 1.4, in C, or not at all?...

So I have a large JSON object i'm returning from the server, then building a datatable from it and displaying it on the form. This usually takes a few seconds.. so I was thinking of a loading bar.  I have the logic behind the loading bar, however...

If I have an ajax call off fetching (with a callback) and then some other code running in the meantime. How can I have a third function that will be called when both of the first 2 are done. I'm sure it is easy with polling (setTimeout and then c...

I've been working on a problem with doing a synchronous call to JavaScript in a WebView (with a return value) and trying to narrow down the where and why of why it's not working. It seems to be that the WebView thread is blocking while the ma...

I have a CPU intensive work to do and i don't want to degrade the user experience. since web workers (http://ejohn.org/blog/web-workers/) are a new feature and are not supported by all browsers, i thought to open an iframe with an HTML + JS that...