[javascript] Forum Topics

## **Introduction** > The McCharts component library is developed based on Hongmeng ArkTS syntax and supports API 9 and above. The chart component has been open sourced. Everyone can participate, whether they are new or experienced, to learn from each other, develop more component libraries, and enrich the ArkTS ecosystem. …

If you want to add a dynamic filtering option in your web application, here’s a simple and effective solution using React. This filter allows users to search by keyword, set minimum and maximum values, and filter by category. import React, { useState } from "react"; const DataFilter = ({ data …

I need to display a pound currency symbol before the amount that is calculated Below is the code I currently have <th class="text-right py-1 px-2 grand-total">0</th> function calc(){ var grand_total = 0; $('table#list tbody input[name="total[]"]').each(function(){ grand_total += parseFloat($(this).val()) }) $('table#list tfoot .grand-total').text(parseFloat(grand_total).toLocaleString('en-gb', {style:'decimal',maximumFractionDigit:2})) $('[name="amount"]').val(parseFloat(grand_total)) } I'm not sure where to …

Hi Dw, I want to get the keys and data of the php json response, heres the response I get {"content":{"1":{"title":"Present","start":"2025,01,29","end":"2025,01,29","backgroundColor":"#f39c12","borderColor":"#f39c12"}}} all I'm interested in starts from title.

I really need to know how to implement a scroll through function on click for my website.

Hi DW, I'm trying to get selected option id, the problem with my code is that it is only showing or returning the id of the first select only even if I click other options it doesn't return them. Heres my code var xid = $('#managsel option:selected').attr('id'); alert("The id is: …

Hello all! I have been away from this forum for far too long and would like to help with my experience/knowledge. This place helped me get through college and early professional work as a web developer. Is there a section to post random code snippets for tasks that may help …

var is function-scoped and allows redeclaration, which can cause bugs. let is block-scoped and doesn't allow redeclaration, making it safer. const is also block-scoped but used for values that shouldn't change. Use let for variables that may change and const for constants. Avoid var in modern JavaScript for cleaner, predictable …

Hello friends, it's been some times since I've posted here, but this community has always been my "I really need help" place to go. Lets get to the idea... I have a WordPress (dislike WP very much) site I'm customizing. Have a popup iFrame on click that is built into …

Could it be one of the following? * webpack * vite * swc * rspack Why do you choose it?

Hello everyone, this is Taras Bilinskii, from Kyiv,Ukraine. Hope you are all doing well during these tough times. Life has been particularly challenging lately, especially living in Ukraine, where the worldwide difficulties hit a little harder. Despite these obstacles, I believe in the power of community and creativity to uplift …

So i'd like to have a **text** saying [Location] which will be shown and changed based on the viewer's location/ip. I tried to follow this video here https://www.youtube.com/watch?v=1KiGKd2XXL4 but i didn't manage to make it to work. I registered on 2 websites to get an API key which i placed …

I am creating a basic page in w3spaces and while I've finished editing the html and css part, I'd like to add a few scripts in it. I tried to add this script (https://www.w3schools.com/howto/howto_js_countdown.asp), which is a countdown timer to my own page but it seems like it doesn't run. …

Hi DW. Does anyone know how can I clear a devtool network monitor log of a browser using javascript. I know the `console.clear()` only clear the console log not the network monitor tool logs.

I’m looking for practical advice and best practices that can help improve a site's speed, considering factors like image optimization, code minification, and server response times. How do you balance performance improvements with maintaining a rich user experience? What tools or techniques have you found most useful in diagnosing and …

Can you guys help me figure out how to use tailwind utility classes "@apply md:text-xl" within .scss files in nextjs

Hey all! im new to coding and have been struggling to import/create this in my vite, jsx project. https://codepen.io/sanprieto/pen/XWNjBdb it has the html, js and css but i dont know how to get it functioning in my test.jsx page. have tried everything,but am really struggling. wondering if you guys can …

I'm start experiment with nodejs/coffeescript and the jade engine. I can see from the examples that setup are around seems pretty standard. app = express.createServer().listen process.env.PORT app.configure -> app.set 'views', __dirname + '/views' app.set 'view engine', 'jade' app.set 'view options', layout: true app.use express.bodyParser() app.use express.static(__dirname + '/public') app.use app.router …

I had a difficult time figuring out how to get or test the last character of a string with javascript, so figured I would post it once I found out in case it helps someone else. I found plenty of removing the last character, but not for just checking what …

I'm learning nodejs(and I like it!). I tried to figure out how to have shorter alias for `console.log` and I found out that I can use `var cout=console.log` and use `cout('[string]')` from then on. Then when I wanted to use `process.stdout.write` and I tried to make a short alias for …

Hello. I am looking for a fast and reliable protocol for streaming big amount of small text data in real time (text strings might be between **20** and maybe **500** bytes long). I do not care about order and when they arrive, i care just to get them to my …

Hey everyone! 🌟 Web development is evolving rapidly with exciting trends like Progressive Web Apps (PWAs), Jamstack architecture, and AI integration. What tools and frameworks are you using? How do you tackle challenges like responsive design, performance optimization, and security? Share your experiences and tips! Cheers, Haseeb Ahmad:

Greetings Folks! I had signed up on Daniweb many years ago but never bothered to seriously post until now. Only when the "social networks" of the world like Reddit and Quora and Twitter started disappointing me beyond the usual excruciating limits did I decide to explore some other programming forums …

Hi, We are an educational institute. We are looking to implement something unique, we want to add multiple forms/surveys on the same page, we want each feedback form/survey under student name and rank so they can easily provide the feedback and then that feedback should be displayed on the same …

Hello everyone, I have a task in which I would like to implement the graphical visualisation of a quadratic equation in the interval x =[-10,10] and - if any exist - the corresponding zeros, using CanvasRenderingContext2D methods. To convert the coordinates into pixel coordinates within the canvas: the coordinates into …

<!DOCTYPE html> <html style="font-size: 16px;" lang="en"><head> <title>Comment</title> <script src="js/jquery.js"></script> <link rel="stylesheet" href="sign.css"> </head> <body class="u-body u-overlap u-xl-mode" style="background: url(img/arcane.png);" data-lang="en"> <div class="container" style="text-align:left;margin-top: 10px;margin-bottom:30px; margin-left: auto; margin-right: auto;background: #fff;" > <div class="title">Registration</div> <form action="#" enctype="multipart/form-data" method="POST" > <div class="user-info"> <div class="input-box"> <span class="text">First name</span> <input type="text" name="firstname" placeholder="Enter Your firstname"> …

Hello guys, please can someone explain to me how i can know the framework of any website on the internet. I know how i can detect wordpress but other framework are hard for me. Please i need assistance on this.

Hello everyone i want to disable the automatic swipe effect on my product page on this site https://kupisi.mk the lib is called lightgallery i am not able to find the line of code to turn it off for 2 days i need fresh pair of eyes !! :S i made …

This is a simple to use, self-contained website slideshow utility. Do you have a monitor or TV setup in your lobby where you'd like to present web content automatically? With this HTML/Javascript page, simply edit an array of pages or "slides". You define a title, duration, and URL for each …

AI-powered code reviews are bringing about a revolution in the way developers collaborate, enabling more efficient, accurate, and thorough evaluations of code prior to its integration into the central project repository. This transformation is made possible by leveraging machine learning and artificial intelligence to automate and enhance different facets of …

What are its use cases?

When it comes to selecting a framework for a development project, it's crucial to make an informed decision. With so many options available, it can be challenging to determine the best fit for the project's needs. Let's take a look at some of the pros and cons of popular frameworks …

I want to prevent cross-site scripting attacks in web applications I make. If someone could provide me with some suggestions and advice, it would be really helpful.

Ashamedly, I'm a jQuery user with very weak Javascript skills. However, I noticed that Google Chrome DevTools console is giving me the following warning: > Listener added for a synchronous 'DOMNodeRemoved' DOM Mutation Event. This event type is deprecated (https://w3c.github.io/uievents/#legacy-event-types) and work is underway to remove it from this browser. …

A full-stack designer makes and keeps up with both the front-end and back-finish of a site, web application, or PC program. Here is a breakdown of the jobs and obligations related to the profile. * Making intuitive UIs with JavaScript and HTML/CSS structures and libraries * Keeping up with cross-stage …

How this concept is related to JavaScript's asynchronous nature?

i need to improve english and React skill. i aleady have six years develop expriences. how can i find a open source project to improve english and React skill. thank you.

I have heard a lot of interviews ask this question on Hoisting in JavaScript. What is this hoisting in JavaScript? Is it the same as hosting? It would be kind if someone could help me with their knowledge.

I am practicing to make GSAP animated websites but i am facing this problem of slow loading of my website for example slow loading images and fonts. It will be really helpful if somebody can help

I am facing a lot of issues in the performance optimization of my web application. Can anybody help? I have heard about reducing page load time, minimizing render-blocking resources, and optimizing images. But I don't know how to do it. Can anyone please share some techniques or tools you would …

Keeping things secure is very important. I have been learning about user authentication in web apps but am concerned about data security. It will be really helpful if somebody could help.

Walk through the essential configurations in a webpack setup for a modern JavaScript project.

Describe prototypal inheritance in JavaScript. How does it differ from classical inheritance in other programming languages?

Warning ... I am not a JAVA programmer so please be kind ... thanks for any help you can provide. Retired bit basher looking for a bit of help with a non-profit project. The code listed below was based on an online example that I found on js fiddle dot …

Explain the concept of the "callback pattern" in JavaScript and how it has evolved with the introduction of promises and async/await.

What are the best practices for error handling in asynchronous code in large code databases?