I’m trying to use the factorial function with memoization. I have taken the max value from the object to reduce the number of recursive calls made. But the problem is the first call is I don’t know whether this is optimized or not since the first call is pretty expensive. Any insights on this will…
Tag: performance
Questions on performance regarding async/await vs Promises and the event loop
Introduction A colleague of mine and I have been discussing the asynchronous nature of JavaScript in the browser and wondering what technical benefits are. We are aware that async/await is syntactical sugar for Promises, but curious to know if there is any other performance benefit for using one over the othe…
How are the JavaScript Arrays internally resizing?
I’ve been trying to implement a collection type of class (similar to List found in C#) in JavaScript that has some custom functionalities. I also wanted it to be somewhat optimized (I’ve read some articles on how to properly use JavaScript Arrays). I thought to myself “if we don’t defi…
Minify JavaScript during GitHub Pages build?
I have a static website through GitHub Pages, built on Jekyll-Bootstrap. My little website includes a lot of JavaScript, and for maintainability I would like all of the JavaScript to remain human-readable in the GitHub repo. But for the end-user of my website, I would prefer to minify the JavaScript. Is there…
Math.floor VS Math.trunc JavaScript
Background I am making a function that receives a positive number and then rounds the number to the closest integer bellow it. I have been using Math.floor, but recently I discovered Math.trunc. I am aware that both will return the same value, given a positive number, and that they work in completely differen…
Extending String.prototype performance shows that function calls are 10x faster
I wanted to extend String object prototype with some utility method. It worked, but the performance was surprisingly low. Passing a string to a function is 10x times faster than overriding the String.prototype method that is doing the same thing. To make sure this really happens I created a very simple count(…
How to profile Javascript now that JSPerf is down? [closed]
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. We don’t allow questions seeking recommendations for books, tools, software libraries, and more. You can edit the question so it can be answered with facts and citations. Closed 1 year ago. Improve this quest…
How to count the JSON object and on the basis of count take the same output
How to count the JSON object and on the basis of count take the same output First I would like the count after it on the basis of count. I want same output like input. for Count:- for output :- Can anybody help me please? Answer
fullcalendar event rendering performance issue
So, basically all my events(there’s min. 360 of them) have team1 vs. team2 or – vs. team2 or team1 vs. – placeholders. And on the initial render events change color depending on whether the event has one or two teams. Orange color for the one team , and green for the two teams. Also, the eve…
compare performance MathJax vs MathQuill vs Katex
I’m looking for the fastest way to create formules inside a web page. I thought I found the solution on jsperf in which MathQuill is by far the quickest. After I studied the tests a bit I noticed that the test for MathQuill runs in sync-mode, but it had an async setup. However, if you check the async ch…