How can I unpack nested object passed as a parameter? I want to unpack age from the object how can I do that? Answer You can destructure any level as: or, if you don’t want to assign to a new variable name then:
Category: Questions
Destructuring a mongoose document
Using mongoose in my project, I ran into a problem. I want to find all documents that have such a key and value pair role: USER. I can get a list of documents, but I cannot get the values of specific fields from it, no matter how I try. Here is my code: The request definitely gets the document, because
Deployed React app to github pages is blank
I’m following instructions from https://github.com/gitname/react-gh-pages to deploy my react app to github pages. At the link I’m getting a blank page though and a 404 error: Failed to load resource: the server responded with a status of 404 () My app works on local host I searched around and its …
Is there a way to insert stylesheet with variable values in ReactJS?
How can I insert <style> to the DOM in a ReactJS project where the values of the stylesheet are dynamic coming from the database. I have the following simplified scenario: Note: I have no access to modify the HTML or JSX element, the solution needs to be CSS only, and based on the class name that the bu…
Why is an array that is passed correctly via props returning undefined?
I’m trying to load each string of an array of strings in a <li> html tag by passing this array via props: And I’m getting TypeError: Cannot read properties of undefined (reading ‘0’) I’m not sure why props.description prop is returning undefined. Also, this TypeError seems …
Should I return a promise in a JS Service Worker onFetch callback function if I don’t want to do anything with the original request?
My scenario is the following: I have a Progressive Web App that uses a Service Worker where I need to catch the request and do something with it every time the user requests a resource or leaves the current URL I’m handling that through adding a callback to the fetch event of the worker I only care abou…
pointerdown vs onclick: what is the difference?
What is the difference between the onpointerdown and onclick event handlers? Are there any practical differences? Are the events not propagated the same up the DOM tree? Are there some devices that only respond to one of these events? I initially assumed that it is only pointerdown that is triggered in touch …
noteOn is not a function
I have: But then I get an error here: Uncaught TypeError: sourceHuman.noteOn is not a function Why is noteOn method not defined? UPDATE I’m using my HTML audio tag to stream by hls.js: I would like to get the audio streamed by HLS and process it with Web Audio API. According to this post, I guess I woul…
JQuery slider change background color and round handlers
So I’ve made a slider, but now I’m trying to style them to look like this. How can I make handlers round? And how can I make the sides which is out of range be greyed out, and inside green? I can’t find any exampled/documentation to look at, so now I’m asking here. Answer here are your…
How to filter a multi dimensional json file to match the input value
I am triying filter a json file to match the input value. I write the code below. The json file is multi dimensional. I need to match input with key 4 and need to remove duplicate values. How to do it? I tried with states.key3.filter(…state.key4 but it give errors Answer This will show the object that h…