I have an array of objects returned from database. Goal is to calculate the percentage of marks for each id. For some objects marks are stored in array whereas for some it is just a normal variable. the above code generates the following output Percentage of marks for the penultimate object just returns an em…
Category: Questions
How can I make rects from JSON?
I’m doing a project to learn d3 visualization and I’m stack recs aren’t appearing. Could you help me? I tried to put a simple array for data and it worked, I could only flip y, but with this JSON data. nothing works https://codepen.io/DeanWinchester88/pen/XWgjjeW Answer The issue is that XML…
Delete a row from a table using and Id React
I have this table which is created using data from my back end And its columns are made with this function I added a button which calls the deleteStudent function and sends it to my Backend but I don’t know how to pass the studentId for the specific row this is my initial state Answer Just use second pa…
Why event Event loop behaving differently in js
I was expecting the output to be 3->2->1 but instead my output is 1->3->2 Why I am getting differently? Answer The setTimeout() timings are not correct. Your parent setTimeout() method it’s set to execute after 5000 ms, then it enters the function and the first one it triggers is the one wit…
How to make endless business hours and constraints on FullCalendar JS?
I have to create a calendar where the available and selectable hours are every day from 10:00 to 00:00. When I’m passing this object to businessHours, eventConstraint and selectConstraint: I have all the slots that are disabled. When I’m passing this one: The calendar displays the right business h…
JavaScript – Classes are special Functions?
Coming from a Python background, I’ve read this, learning Javascript: Classes are in fact “special functions”, and just as you can define function expressions and function declarations, the class syntax has two components: class expressions and class declarations. on dev.mozilla website.. Wh…
Event Delegation – Element Style Issues – Javascript
Having an issue whereby I can click on each individual element and the target element comes back as being clicked but when applying a style, it only applies to first element rather than any other targetted element. Event Delegation works as said above I can click on each element on it’ll come back as be…
Passing vuejs input value to multiple data
I want to send an input value to more than one data. I searched but couldn’t find it, how can I do it? How can I do without method? Answer You can use this syntax to pass input value to multiple variables:
Service Worker onClick event – Open and pass some data to a PWA
I have implemented push notifications for my PWA and my service worker (SW) is currently handling clicks on a notifications like this: If the app is running it will put it in the foreground and send it some data using the Client.postMessage API If the app is not running it will launch it via Client.openWindow…
Unable to make CSS animation centered
I’m working on this CSS animation from Animista which is not centered. The entry animation starts and ends not centered and the exit animation starts in the middle and slides down. Which is not how the animation is supposed to work. The animation is for a popup which gets triggered after a 1-2 seconds a…