I’m tring to make a game and i want to use window.requestAnimationFrame() to make roles move, the movement seems to be right at first. but there is problem that when i re-trigger move() immediately after triggering pause(), the movement will be faster and faster, i have code blow, move()、pause() and ini…
Category: Questions
Javascript – Replace multiple elements in an array using index
Consider following array in Javascript: Now I want to replace all the elements at once from index 3 to 9 in following way: Is it possible to achieve in javascript ? Note: I want to perform following operation using array only Answer Use Array.fill()
How to use conditional rendering inside map in React
I have a react page that is rendering a list of products that are being returned from a GraphQL API. Once the products are returned, I’m storing them in a state and then render them. How do I only render products that meet certain conditions? Right now, I’m mapping over the products and rendering …
JavaScript, What have I done wrong? [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…
Does loading a webextension’s background.js script impact performance, even if the script’s contents are minimal?
When installing a webextension, does the mere existence of a background.js file negatively impact performance* at all, considering that it is a separate javascript file that must be loaded? For most practical cases one could assume the answer is “pretty much No,” but in the case of an older comput…
HTML CSS -zooming div in center of table cell like popup
I am using Angular. In table cell I am using div but I need to show the div like a popup in click event. I made it click event logics but how to show div element like a popup which is placed in between a table cell without using any library like bootsrap or angular material ts part css part
Generate and sort cartesian coordinates around (0,0) in all quadrants using Javascript’s nested array loops
I have an variable obj that has the element count that needs a cartesian coordinate. So I want to generate the following matrix. obj = 9, Square root of obj = 3, 3×3 matrix (-1,1) (0,1) (1,1) (-1,0) (0,0) (1,0) (-1,-1) (0,-1) (1,-1) obj = 25, Square root of obj = 5, 5×5 matrix (-2,2) (-1,2) (0,2) (1…
Wait Until Data is Fetched from MongoDB React JS
I’m creating a Quiz App. This is the Quiz Page Code. Quiz DB Document contains a QuizQuestions Array which has question ids. Then I fetch specific question from MCQ/Question DB. Fetching MCQ takes time and when I console.log fetched data. First and second time data in undefined then its viewable. Due to…
How to make sure the email is logged in only once?
I created a small chrome extension for a specific scope of users. How can I make sure that a user is logged in only on one machine to avoid sharing the Extension without users paying for it? Is there any way to do so? With other apps I check the UUID and compare it against my list of users. I
What is @babel/plugin-transform-classes?
I run Google PageSpeed Insights on my site, and it reports an issue that is “Avoid serving legacy JavaScript to modern browsers”, as below: I have no idea of what is @babel/plugin-transform-classes, so I search online and it seems babel is a JavaScript compiler and @babel/plugin-transform-classes …