I wanted to understand the internal mechanisms of a JavaScript engine for asynchronous functions, so I checked the Spec. For the rest of this question, I will refer to the linked version of the specification. Section 6.2.3.1 describes this. Basically, a promise is created which is resolved to the expression t…
Tag: javascript
Why it doesn’t show the bluish in blue majority?
So I was creating an app in which I would click on a button and it would generate a color with its details in JavaScript (vanilla), details are given in a <h1> tag. One of the details is telling if the thing is red, green or blue majority. The website functions properly, but there’s a bug. When th…
React cannot read properties of null (reading ‘map’)
I am new to React and I get the Objects are not valid as a React child (found: object with keys {id, description, status, priority, created, deadline, emp}). If you meant to render a collection of children, use an array instead. error and followed Link to solve the issue. Upon running the object with the map …
Is it nessesary to use getStaticProps with json import in Next.js?
I want to render static data that is coming from a JSON or typescript file and display it to the user. Do I have to use getStaticProps or can I simply import the data without getStaticProps? It’s not clear to me after reading the next documentation. projects.tsx names.json index.tsx Answer It’s to…
Read More functionality code is not working as expected
I have a problem with the “read more” functionality I have implemented into my website. The code is working fine but only after two times of pressing the read more button created with the code. This code works when it detects the WordPress read more tag on the text field in the backend and splits …
Js .classList.add() is not working properly
I’m in a procces of creaing simple movie site. cruntly working there home page. in the home page there is a carosol. in CSS I hidden the visibility of all slide. what I’m going do is in JS creat a array for all silds and switch between silds when I clicked the arrow icon. as a first stem I want
JavaScript: Comparing Two objects in one array
I’m new to this world of vanilla javascript. I’ve been trying complete some challenges but it seems like I’m unable to find the solution to a challenge. The task is:”Sort array by object property” Write a function that takes an array of objects as an argument Sort the array by pr…
how to upload all images from a folder
trying to upload all images from a folder destination folder on server side is test destination format for images is uniqid().jpg problem – seems resulting array on server side is empty upload.php Answer You are passing a FileList object fd.append which is incorrect you have to loop through the list and…
After clicking button, alert is not showing up
I am doing a project on paper-rock-scissor that has UI. So, I have four buttons, Start game, rock, paper and scissor. I want if I click on the Start game button, an alert (“Please choose rock, paper, or scissor”) will pop-up. Right now if I click on the Start game. There’s nothing happening.…
How long does a static class member stay in memory in javascript?
Say I have a class like so: As you can see, when looking for a key I first check the #foundKeys property to see if I’ve already looked for it before, if not I look for it then add it to the #foundKeys object at the end if so. My question is, how long does the application keep that object