can you tell me. what is difference between useCallback() and useMemo() in react hooks and when is the function used or what are the examples? Answer useMemo: A hook used to memorize a value, when certain values of the dependency array change. Instead, useCallback memorizes a function, a callback, so when the…
How to check for multiple values in a jquery IF statement
I have the below code which shows/hides a div based on an option in a dropdown, however it only toggles when a user selects 1. There are a few items in my dropdown that I’d like to show the DIV for. For example, let’s say I have values 1 through 8 in my dropdown, and I want to show a
How do I add hover effects over buttons on Vue.js 3?
I am building a calculator to help practice learning Vue.js 3 (I am new to vue). I have got the basic functionalities down but I am trying to figure out how to add a hover animation over the buttons. If possible I am trying to make a different hover color between the buttons in white and buttons in orange. An…
React img onError not firing
I am trying to use a third-party API for getting YouTube thumbnails with higher resolution, which sometimes fails with code 404. If I fail to fetch the image, I would like to replace the src with the default YouTube thumbnail retrieved using its own API (I have the url stored in a json). When I tried to imple…
Mapbox GL what does ?fresh=true do when loading a tileset?
Mapbox GL what does ?fresh=true do when loading a tileset? We are having trouble loading the map in a react page. Removing ?fresh=true sometimes breaks the page and other times fixes it. I’m wondering what it does because I can’t find anything on it online Answer From https://github.com/mapbox/map…
How use plotly_click and plotly_selected simultaneously?
So I have a signal graph that is displayed on my html page. I want to give to the user the possibility to click at specific point to create a vertical line : Image with vertical bar. I want also let the user to draw a box in a specific area : Image with box area Both code are working
stream.write This expression is not callable
I am trying to a write a function that takes either writeable stream (createWriteStream) or process.stdout/.stderr but typescript keeps throwing this error. Error goes away when I do conditional type check. Error message at line 3 Answer Both NodeJS.WriteStream and WriteStream overload the write() method, but…
Vulnerability in NestJS 8.4.5
Recently, when I run npm audit in my npm package, I receive the following error: The problem seems to be in the dicer package which is a very popular package used by NestJS. I searched the web for possible solutions but can’t find any fixes. Has anyone been able to fix this yet? Thanks in advance. Answe…
How to pass values to parent from child of child?
I have a parent component, with a child, which also has a child. When a value is defined in child two, I am passing that value using a callback to child one, but I also want to pass the same value back to the parent. Unfortunately using a similar callback seems two throw the error that the identifier has alre…
How can I forward sent messages from one discord server to a separate channel in a different server [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 9 months ago. Improve this question Title. I couldn’t find anything on this online or on stackoverflow. Answer What you c…