I’m a beginner. I’d like to create a simple countdown from an array started by a button event listener. I want to display the elements of the array after a delay in p class=”countdownDisplay”. However, it doesn’t work the way I want. There’s no delay. Answer If you call the…
Category: Questions
Place text on Box Component of Material UI
I want the hover functionality to happen (UI) which is happening in this case: Desired UI Source: https://www.loewshotels.com/santa-monica Now since modifying background image styles is a bit complicated, I have to use the Box Component from Material UI and in it, I have placed the image and also done the des…
Where am I going wrong with returning an array from a react function [closed]
Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers. Closed 1 y…
Data fetched and set with setState inside useeffect doesnt appear in console log unless i set a timeout
So I am fetching data from my database for each item in the array groups and then I want to map through this data (twice because it’s an array inside an array) in the jsx part of the component. The problem though is that the state is changed “too late” This is my guess because the console lo…
Javascript performance issue with big data
I am filtering a list with javascript. My code works without issues but when the list const gets greater than 100 the browser freezes. What am I doing wrong and how can I make this code working for a list of much more values (> 50.000). Answer See if this helps to begin with: Move lower-casing filterVal ou…
global React functions that utilize hooks
I have a function called scheduleShortcut that gets used in a couple places throughout an application. Initially, this function was local to the specific components but since it is being used multiple times, I want to refactor this function into a global function. At first, I tried to do the following: Howeve…
How to add a button to run code inside LeafletJS marker?
I am trying to add a button inside a pointer which print a log to the console. This is just meant to be a test, so I can actually make the marker run a method, but I can’t even get it to print text. When I load the page, I immediately get this error: Uncaught (in promise) TypeError: Cannot read
How to combine different paths in firestore version 9
I was using firestore version 8 and used the following code to create alternations in code: I couldn’t find a way to create such alternations in firestore version 9. Do you know how to create alternations in version 9? Answer the way I would approach this with V9 will be the follow: We now have a really…
How to convert json object keys into different arrays removing the duplicate
I’m having the JSON like this i need to group this JSON with all the keys in JSON object and value should in array (excluding duplicates). My output should be like how we can able to achieve this Answer You could use the Array.reduce() method to transform your array into a single object: If for one of t…
How can you calculate number of functions in a module when exporting/importing a custom module
Taking an instance of exporting these two functions in JS module.js new.js Help, if I was to count how many functions am I importing on new.js file. Answer It would be interesting to know what you are trying to achieve as it is somewhat unusual, but it should be somewhat easy to get what you are after. You ca…