Why does this dynamic programming optimization actually make code slower?

This is from Leetcode problem: Concatenated Words. Below is a working solution. I added what I thought to be an optimization (see code comment), but it actually slows down the code. If I remove the …

Does putting intermediary math results into variables improve performance in javascript?

I have been playing around with the Riemann zeta function. I want to optimize execution time as much as possible here so I put the intermediary results in temporary variables. But testing revealed …

coustom hook when taking data in next render lost data

I made a hook useSendFormData , when i use it i get Invalid hook call. Hook takes data from SubmitForm url:string, method: post or put success: succes message if it was success id: not required …

Performances of ‘lineTo’ method when going beyond canvas dimensions

Using a canvas context, assuming I call beginPath then twice lineTo with x=-999, y=-999 and x=50, y=50 then finally stroke, it will draw a line from the top-left corner to the (50,50) point. During …

find sum of multiples 3 and 5, JS

I’m given a number and I need to find the sum of the multiples of 3 and 5 below the number. For example: 20 => 78 = 3 + 5 + 6 + 9 + 10 + 12 + 15 + 18 My code works, but not for numbers greater than 1,…

Javascript Optimization, where to begin?

I’ve started work recently at a new company and they have an existing application with 1000s of lines of Javascript code. The baseline contains dozens of JS files with easily over 10,000 custom lines of code, they also use multiple 3rd party libraries such as Jquery, Livequery, JQTransform and others. One of the major complaints they have been receiving from users is the slowness of the client side operation of the site. I’ve been tasked with optimizing and improving the performance of the JS. My first step will be obviously to move forward to the newest Jquery library, and incorporate