I am working on a website where we have thousands of products. I have to capture the impression of all products users can see in their viewport. So I created a directory and I used IntersectionObserver, and referred to it inside the HTML code of that product. The issue is that it’s causing a performing …
Category: Questions
Chrome (and Edge) asking several mic permissions
In my page I have three audio recorders. And when chrome asks permission to use the mic, it has the options: “allow”, “block” and to close the permission popup. If the use closes de popup, it appears other permission, and after that another (if the user repeats the action). One for eac…
How to split an array into a number of arrays based on increasing value by a given number?
I’ve written the following function: const trends = hits.reduce((arr, curr, index, array) => { if (arr.includes(curr)) return arr if (curr + 1 === array[index + 1]) arr.push(curr, array[…
How to clear input field after clicking submit in react js redux
I am developing a small project to learn react redux, I had a good view of connecting react with redux. I am trying to perform a small task that is clearing the input box after hitting submit, I’ve tried using reset, wrote separate function to clear the state and included the logic to clear input in han…
Unable to run a function in an object and print a new array – a bit confused
For some reason, it only calculates the first coordinate of array 1 in the console.. could you please let me know what I’m doing wrong here? Answer Firstly no need to pass an arugment to calcRad. You are not using any in your method. You are returning from inside the loop and that is why it is not run f…
How to set the target of highcharts bullet chart using SVG?
I want to achieve a bullet chart like the following: But the highcharts docs don’t have anything written on adding a custom svg or how to achieve the arrow and label on the top of the target marker. Any hint or ideas would be really helpful. Thanks world. Answer You can use any svg icon and position it …
How to count selected checkboxes in React Native in functional component?
Whole code is here I render two flat list, One shows category name and other shows its sub categories with check box. Now i want, when user checked multiple or one check box of the sub catogories, The count shows in category like Health(count = 2) is category: if i checked pharmacy and hopital. 1 pharmacy 2 h…
How to get users document id in Firestore using Javascript?
how to get only the last document id in Firestore? i tried the result i’m getting wrong id thats not in the orders document!! This is my documents : Answer You are running db.collection(‘users’).doc(user.uid).collection(‘orders’).doc() twice which creates 2 different DocumentRefe…
Webpack : Cannot read property ‘readFile’ of undefined, No output files
Using webpack > 5 version. Below is my appDevMiddleware.jscongifuration When i do npm start of my React App, i’m getting This is exactly showing here I will have to somehow use the promises for readFile which is something like const { readFile } = require(‘fs’).promises How should i repla…
Getting error Effect “n.loadInfo$” dispatched an invalid action
I am trying to write an effect for an action but it is throwing an error as: “Effect “n.loadInfo$” dispatched an invalid action: null Error” I have my effect as below: I have my action defined as below: And in the service as below: I have selector as below that is used in the effect: C…