JavaScript is one of the most popular programming languages in the world. If you are looking for a website to be created with sophisticated interactivity or in search of an impressive mobile app, using JavaScript is the way to go. With the help of our expert Javascript Developers, you can bring your idea to life.

A Javascript developer on can create dynamic web applications with extended features and improved user experiences. They can also design advanced gaming applications, develop cloud applications, and create powerful websites that work with less coding and low complexity.

Here's some projects that our expert Javascript Developers made real:

  • Developed interactive websites & apps with detailed user accounts experience
  • Created powerful applications that streamline complex data into actionable insights
  • Built custom Windows and Mac software designed to fit client specifications
  • Developed mobile apps that enables customers to access data from their phones
  • Connected databases to web interfaces with easy input/output functionality
  • Optimized existing code for faster loading pages and smoother user workflows

Javascript Developers on know how to turn ideas into reality. They are experienced professionals dedicated to excellence and creating top-notch scripts that are easy to use, reliable and fast. If you have an idea but don’t know how to turn it into technical reality, is the place to post your project. Hire our expert Javascript developers today!

Asiakkaamme antoivat 694,692 arvostelussa keskimääräisen arvosanan Javascript Developers 4.86 / 5 tähteä.
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    652 työtä löytyi, hinnoittelu EUR
    Swap by uniswap sdk 6 päivää left

    I need help to swap my token using uniswap sdk.

    €23 (Avg Bid)
    €23 Keskimäär. tarjous
    11 tarjoukset

    I am looking for a skilled web developer to create a custom-built business website for lead generation purposes. The ideal candidate should have experience in designing and developing corporate websites. The website should have a professional and minimalist design that aligns with my brand. Additionally, the website should be optimized for search engines and have a user-friendly interface. If you have the skills and experience, please submit your proposal.

    €558 (Avg Bid)
    €558 Keskimäär. tarjous
    48 tarjoukset

    I am looking for a React developer to make some CSS changes and fix filters for my app. The ideal candidate should have experience in React development and CSS.

    €21 (Avg Bid)
    €21 Keskimäär. tarjous
    45 tarjoukset
    improve python script 6 päivää left

    MY BUDGET IS $50 / 3 DAYS! PLS DO NOT BID WITH PLACEHOLDERS BUDGETS & TIMELINES. I have a python script that (1) gets email data from several online sources, (2) uses regex to guess domain data, and (3) save the email and domain output to MongoDB. Now, I want to improve the script by (1) changing the database schema, (2) adding additional data fields to the email and domain, and (3) outputing the data in my application based on my user's search input and payment plan, and (4) downloading the requested data to the user's computer an a CSV file. The project requires, python, , stripe, mongodb, and mongoose. So, we will use python for the backend and for the frontend. The frontend of the app is already deployed to Vercel. If you can deploy the backend, I can increase the bu...

    €45 (Avg Bid)
    €45 Keskimäär. tarjous
    10 tarjoukset

    I am looking for a skilled web developer to complete the functionality improvements on my website. I need someone experienced in this platform. The specific tasks that need to be completed include: - Implementing API functions - Adding a payment gateway for online purchases (I'll provide API here as well) - Integrate a chatbot for customer support I have 2 weeks deadline, but I am looking for someone who can work efficiently and communicate well throughout the process. If you have experience with custom-built websites and can complete these tasks, please submit your proposal.

    €1000 (Avg Bid)
    €1000 Keskimäär. tarjous
    82 tarjoukset

    I am looking for a skilled freelancer to test a video editing library in Typescript. The specific task that I want to test with the library is basic trimming and cutting. I will be providing royalty-free videos for testing purposes. My preferred video output format is MP4. Ideal Skills and Experience: - Experience with Typescript - Proficiency in video editing software and techniques - Knowledge of video output formats and codecs

    €15 (Avg Bid)
    €15 Keskimäär. tarjous
    10 tarjoukset

    Desarrollo de una plataforma de registro, administración de referidos y gestión de capital, depósito de capital de socios inversor, mediante pagos de criptomonedas UDST por wallet usando la RED TRC 20. Generar factura de depósito por wallet con código QR. Para ingresar a la misma debe registrarse mediante una membresía. El sistema de referidos tiene una profundidad de dos niveles. Retiros por criptomonedas.

    €3798 (Avg Bid)
    €3798 Keskimäär. tarjous
    2 tarjoukset

    Looking for an experienced web scraper that can scrape the airline website and extract the flight data and flight prices. Requirements / Specs: - Create an API(JSON) or a js/php file that I can use - Must in Javascript or PHP - Must use simple http request (axios, fetch, guzzle, ...),Puppeteer, Playwright, jsdom, cheerio, Symfony DomCrawler - Result must be returned under 5 seconds, please tell me if you can’t return the result in under 10s, for example the website is too slow - Recommended scrap their mobile apps with figure out their API - I need the source code to run on my system - I will provide input format, expected output format, test cases and more details URL

    €476 (Avg Bid)
    €476 Keskimäär. tarjous
    69 tarjoukset

    Hi, Need a webflow developer urgently. If the task is done right, I will hire you for all of my future webflow or even wordpress projects. Please keep in mind, I don't need a developer who charges for every minor change that is sent. Of course if there is a new requirement that is not minor, you will always get paid for it. Thanks!

    €9 - €28
    Sinetöity Salassapitosopimus
    €9 - €28
    3 tarjoukset

    Budget: 250 USD The project is restaurant and club website. We have a bootstrap ready theme to use. We have an home landing page with multiple sections. An events page An event detail page A news page A news detail page A photo gallery organized with multiple sub galleries A login / signups feature to access photo galleries details page A menu with dishes divided by categories A dish detail page Page has relationship for example a gallery is associated with an event We need to make editable text on every front end section. The project is multi language That's is all, looking for developer can stay in my budget offering me best qui work. I like Django as CMS, Wagtail if we'll done because Django based can be valid alternative. No WordPress.

    €175 (Avg Bid)
    €175 Keskimäär. tarjous
    54 tarjoukset

    Please read to the end. Max 50$, If you complete soon, I will give you bonus max 30$. But please don't bid more than 50$. Requirement : 1. You have to explain briefly that you can complete in time, including previous works etc. I don't care whatever it is. 2. Start your bid with "Email and Phone". If not, I will ignore. 3. You have to complete in 20 hours after awarded. If can't, please don't bid. Let's not waste our valuable time. My deal : 1. I will hire you asap. 2. Will support you can install dev env on your local. 3. Will release milestone after I confirm your result. Feel free to bid if you are confident about my requirements and deal.

    €40 (Avg Bid)
    €40 Keskimäär. tarjous
    13 tarjoukset
    PHP ERP Enhancements 6 päivää left

    I would like to modify an ERP system built in pure PHP and MySQL database. The modifications needed are: 1. Currently the ERP has a feature called Bill of Materials but it's not working really well, I would like it to be edited to allow selection of a main product then input the ingredients to make the main product. 2. The Inventory part of the ERP should list the inventory items without having to search for the item. 3. The sale report is not fully functioning, maybe it's a step skipped or something because after selling you are required to generate the sale report but it's not showing. The system is based on the open source NotrinosERP and can be found on the following URL: ps:- NO side bids on chat. Bid with Finality.

    €53 (Avg Bid)
    €53 Keskimäär. tarjous
    15 tarjoukset
    React Native - Backend Drupal 6 päivää left

    React native application, with Drupal CMS as Backend. An e-commerce website.

    €175 (Avg Bid)
    €175 Keskimäär. tarjous
    37 tarjoukset

    I am looking for a developer experienced in JavaScript (specifically React) and PostgreSQL to generate PDF reports for a textile brokerage agency. Responsibilities: * Work with a small and relatively simple PostgreSQL database consisting of around 10 tables. * Utilize PostgreSQL for querying basic information such as names of parties and suppliers. * Generate well-formatted PDF reports using React libraries like jsPDF and jsPDF AutoTable. * Design the reports to include transaction details, order records, and invoice (memo) information for payment. * Develop code in a scalable and maintainable manner, allowing for easy modifications and additions to specific columns or rows in the reports. Requirements: 1. Proficiency in JavaScript and experience with React for frontend development. 2. S...

    €103 (Avg Bid)
    €103 Keskimäär. tarjous
    7 tarjoukset
    Next.js Frontend - tailwindcss 6 päivää left

    Develop only the user interface. the backend will be with Drupal.

    €32 (Avg Bid)
    €32 Keskimäär. tarjous
    19 tarjoukset
    Drupal Module 6 päivää left

    I want a module that works similar to this application

    €155 (Avg Bid)
    €155 Keskimäär. tarjous
    18 tarjoukset
    React api integration 6 päivää left

    I am looking for a developer to help me with React API integration. Specifically, I need to connect all three components with an API. However, I need some customizations to be made in the integration process. Therefore, I am looking for someone with experience in React API integration and the ability to customize it to my specific needs.

    €79 (Avg Bid)
    €79 Keskimäär. tarjous
    22 tarjoukset

    Looking for an experienced Java and Spring Boot/Microservices professional to assist with the development and maintenance of our system. Main Goal: Integrating multiple systems to improve functionality and efficiency. Specific Features/Functionalities: - User Authentication and Authorization - Database Optimization - API Development and Integration Timeline: - Flexible, can be completed within a month Ideal Skills and Experience: - Strong experience with Java and Spring Boot/Microservices - Knowledge of database optimization techniques - Comfortable with API development and integration - Familiarity with user authentication and authorization protocols - Ability to work independently and within a team environment - Strong problem-solving skills and attention to detail - Ex...

    €311 (Avg Bid)
    €311 Keskimäär. tarjous
    11 tarjoukset
    Elementor & WooCommerce 6 päivää left

    We require a professional with experience in Elementor and (back-end) programming of Wordpress. Required to update the headers of our current faytech website, with the one similar as Pyramid. As we recently became a part of Pyramid. Skills and Experience: - HTML, PHP, CSS, JavaScript, - plug-in experience: Elementor, WooCommerce, Enfold Theme, (would be great but no must have), Multilanguage. Project Requirements: - Quick support and assesment, total transparency - show how it is planned to look like before actual release - ensure the headers have the same as on the pyramid global website > header

    €9 / hr (Avg Bid)
    €9 / hr Keskimäär. tarjous
    81 tarjoukset

    Hello, I need HTML and CSS developers, I will provide a theme to candidate and you have to update it with requirement. Good luck.

    €7 / hr (Avg Bid)
    €7 / hr Keskimäär. tarjous
    68 tarjoukset
    Ruby on rails teach 6 päivää left

    Willing to explain how it works and open to working together in long-term business relationships.

    €159 (Avg Bid)
    €159 Keskimäär. tarjous
    15 tarjoukset
    heroku twitter bot python django 6 päivää left

    i need help uploading twitter bot in heroku use: twitter api database

    €23 (Avg Bid)
    €23 Keskimäär. tarjous
    7 tarjoukset
    Clone the website with react 6 päivää left

    I'd like to copy this website with react send me the proposal with the estimated cost and time

    €381 (Avg Bid)
    €381 Keskimäär. tarjous
    105 tarjoukset

    Looking for an experienced software developer to create a point of sale system similar to Kyte, but better, with added appointment booking functionalities. The system should be user-friendly, reliable, and secure. The ideal candidate should have experience developing similar applications and be able to provide examples of their work. The system should include the following features: Inventory Management: easily track and manage your inventory levels, set up low-stock alerts, and receive notifications when products are running low. Sales Tracking: view real Time sales transactions made in real-time, including the date and time of sale, product sold, and payment method used. Payment Processing: multiple payment options for customers to pay for their purchases such as cash, credit card...

    €749 (Avg Bid)
    €749 Keskimäär. tarjous
    37 tarjoukset
    Node js. scraper 6 päivää left

    I need the Node js. scraper for multiple jobs. Details will be discussed.

    €6 - €50
    €6 - €50
    17 tarjoukset

    we looking for a skilled developer to create a blockchain based multi-services software and delivery web and app platform. timeline of this project 3-4 months. The ideal candidate should have experience working with BTC, ETH, BNB, BNB smart chain tokens and ETH smart chain tokens. The platform will offer a variety of services including Delivery, Payment, Marketplace and Home Services. The target user demographic for the platform will be Individual Consumers, Small Businesses and Enterprises. If you have experience working in blockchain technology and developing multi-services platforms, we would love to hear from you! DOC:- NOTE ?:- we clearly said what we need on the document have you read This project main part is the document wallet (cryptocurrency) and payment, Finance (E-Wallet)...

    €4515 (Avg Bid)
    €4515 Keskimäär. tarjous
    48 tarjoukset
    Theme update 6 päivää left

    Hello, I need HTML and CSS developers, I will provide a theme to candidate and you have to update it with requirement. Good luck.

    €21 (Avg Bid)
    €21 Keskimäär. tarjous
    25 tarjoukset

    I am looking for a skilled programmer who can develop a tool using either Javascript or Python. The tool will be used on a website platform and will have the main purpose of allowing users to claim daily rewards from a bot. Specifically, we require the following features: - Auto-claiming functionality - Noitification reminders The ideal candidate for this project should have experience with Discord or Slack bots, as well as strong skills in Javascript or Python. Additionally, experience with web development and API integration will be a plus. We are looking for someone who is able to deliver a high-quality tool that is user-friendly and reliable. The website :

    €171 (Avg Bid)
    €171 Keskimäär. tarjous
    14 tarjoukset

    Hi, I want a AI Interior Designer based on this open source script "". The demo to this link is The entire website can be made using this script. I want you to make me a custom frontend to differentiate my website and change any API keys needed like Stripe. I will also provide the front end design for reference. Since the entire script is avaliable, this project should not take more than a week to complete. Thanks, Syed

    €23 (Avg Bid)
    €23 Keskimäär. tarjous
    5 tarjoukset
    Maps & Listings 6 päivää left

    I'm looking for a freelancer to create an interactive map for me with Google Maps as the platform. The map should have custom markers, directions, and search functionality. It should be easy to use and visually appealing. I'm interested in having the ability to add custom markers, pins, images, and more to the map. I'd also like the map to be optimized for mobile devices and have a responsive design. Lastly, I'd like to have the option of adding different layers to the map to better visualize my data. I would like this linked with member profiles.

    €35 (Avg Bid)
    €35 Keskimäär. tarjous
    6 tarjoukset
    Frontend developer 6 päivää left

    I am looking for a frontend developer to enhance the user experience and interface design of my website. Ideal candidates should be proficient in Javascript and have experience in developing responsive and visually appealing interfaces. The project deadline is within 1 month, so I need someone who can work efficiently and deliver quality work on time. Previous experience with React, Angular, or Vue.js frameworks is a plus. The main goals for this project include: - Improving website navigation and user flow - Redesigning UI elements to be more modern and intuitive - Optimizing website performance and loading speed - Implementing new features to enhance user engagement If you have the skills and experience to deliver an exceptional frontend design, please apply and showcase your portfol...

    €15 / hr (Avg Bid)
    €15 / hr Keskimäär. tarjous
    114 tarjoukset
    Trophy icon Web Developer 13 päivää left

    We need you to build our website from scratch. Our company is about trucking and logistics. Please provide us your Porfolio

    €93 (Avg Bid)
    38 työtä

    I am looking for an experienced user interface and user experience designer to create a website with a Quora-like approach. The main purpose of the website is to provide a knowledge sharing platform. A vibrant and colorful design is my preference, while ensuring a sleek user experience. To provide an interactive platform for users, I need an upvoting system and strong user profiles with the ability for categorization and tagging. A minimalist and corporate feel is also desired. The ideal individual for this project will closely understand these requirements and be experienced in creating similar projects.

    €320 (Avg Bid)
    €320 Keskimäär. tarjous
    71 tarjoukset

    I want any javascript that auto click on page onload or after delay, when autoclick on page popunder ads will open, and browser not block popup.

    €17 / hr (Avg Bid)
    €17 / hr Keskimäär. tarjous
    13 tarjoukset

    I am looking for an experienced developer who has expertise in and HTML 5 Canvas to solve 2 problems. 1- To make videos work on top of Fabric.js. 2- To make the HTML 5 Canvas mobile responsive. My in-house developer is working to fix the above 2 problems and he is available to provide technical briefings. More details in chat.

    €273 (Avg Bid)
    €273 Keskimäär. tarjous
    13 tarjoukset
    Gaming website 6 päivää left

    I am looking for a skilled developer to create a gaming website that will feature action games. The website should have an integrated payment system to allow users to purchase games and other items, as well as user registration and profiles. Additionally, the website should have leaderboards and achievements to enhance the gaming experience. It should be compatible with both desktop and mobile platforms. Ideal skills and experience for this project include proficiency in web development, payment integration, and mobile optimization.

    €13 / hr (Avg Bid)
    €13 / hr Keskimäär. tarjous
    14 tarjoukset

    Hello there, I am looking for complete redesign/ modernize website some thing similar to pls provide sample references and let me know the time and estimate for the work. regards

    €73 (Avg Bid)
    €73 Keskimäär. tarjous
    33 tarjoukset

    I am looking for a freelancer who can develop a script for my fibre optic router that allows it to reboot in a programmed way. I do not have a specific router model, but I can provide details if needed. I want the router to reboot every time I want it to, so there is no specific frequency required. The reboot process should not cause any disruption to my internet connection, and I would prefer maximum speed for the reboot process. My main requirement is customized time settings for the reboot process, which means I need to be able to set the time for the reboot to occur. Ideal skills and experience for this job include: - Experience in router programming and scripting - Knowledge of fibre optic routers and their capabilities - Ability to customize time settings for reboot process - St...

    €138 (Avg Bid)
    €138 Keskimäär. tarjous
    11 tarjoukset

    I am looking for a skilled web developer who can create a website for my company that rents slingshots. The website must have a calendar-based booking system that allows customers to book only one product for rent. I prefer a minimalist and modern design for the website. The website will not need to integrate with any other systems or platforms. Ideal skills and experience for the job include: - Proficiency in web development languages such as HTML, CSS, and JavaScript - Experience with booking system integrations - Knowledge of web design and user experience - Attention to detail and ability to deliver a high-quality product on time.

    €175 (Avg Bid)
    €175 Keskimäär. tarjous
    143 tarjoukset
    Personal project -- 2 6 päivää left

    I am looking for project support for my personal project, which is aimed at learning a new skill and creating a portfolio. Specifically, I am seeking technical assistance in the area of software development. Ideal skills and experience for this job include: - Proficiency in the programming languages and frameworks required for my project - Experience in web application development expertise in docker swagger api, angular node and graphql , next js If you have the technical expertise and are excited about the opportunity to help me bring my personal project to life, please reach out!

    €477 (Avg Bid)
    €477 Keskimäär. tarjous
    33 tarjoukset

    Hello I want to create my own crypto please help me is any cryptomaniac here for helping me

    €196 (Avg Bid)
    €196 Keskimäär. tarjous
    33 tarjoukset

    Hello freelancers, We are currently looking for an experienced Full Stack Developer, specializing in backend development with Laravel and frontend development with Angular. As a developer, you will be responsible for designing, developing, and maintaining our web applications. Requirements: Strong experience in backend development using the Laravel framework Proficiency in PHP and best development practices Practical experience in creating and maintaining MySQL databases In-depth knowledge of designing and developing RESTful APIs Experience in frontend development using Angular (or equivalent experience with another JavaScript framework) Ability to work in a team and collaborate effectively with other members of the development team Self-motivation and the ability to manage multiple pro...

    €573 (Avg Bid)
    €573 Keskimäär. tarjous
    173 tarjoukset

    I want to have someone replicate the look and feel of a WordPress website. Although it should be similar design-wise, the content would be different and it will have my own brand. I only need to keep the structure. It's a real estate website, the URL will be provided to the selected candidate. The project deadline is 1-2 weeks. I'd need you to tell me how many pictures and how many videos are used in the website so I can provide the same. The search option is provided by our real estate board which I will provide you to imbed to the website. Skills and experience ideal for the job: - Experience in website design and development - Knowledge of HTML, CSS, and JavaScript - Attention to detail - Ability to meet deadlines - Good communication skills

    €389 (Avg Bid)
    €389 Keskimäär. tarjous
    89 tarjoukset
    Fixing small bug in schedule system. 6 päivää left

    In a custom made schedule system the loading of a page takes too long. Waiting for server response is almost 4 seconds. System is Php, mysql, vue and bootstrap.

    €138 (Avg Bid)
    €138 Keskimäär. tarjous
    115 tarjoukset

    I am in need of a Chrome browser extension that serves a utility purpose. Specifically, I have a clear idea of the features I need included in the extension. The level of customization required is intermediate. Ideal Skills and Experience: - Proficiency in developing Chrome browser extensions - Experience with JavaScript, HTML, and CSS - Ability to implement user interface design and functionality - Strong attention to detail and ability to meet project deadlines. I need about 8 browser extensions. Most of the extensions will be providing Facebook related services. It needs to be coded with Manifest V3 for the Chrome browser. I think max 2 weeks is enough time. This works get 4-7 days I think. This work will be done by the person who will give the best price. The database will be used...

    €150 (Avg Bid)
    €150 Keskimäär. tarjous
    16 tarjoukset

    I am looking for a skilled Flutter developer to implement XML data and create a custom layout for a mobile and tablet responsive app. The app will display text data only, and the layout will need to be customized to our specific requirements. The ideal candidate will have experience with Flutter and XML data implementation, as well as a strong understanding of responsive design. The project requires a tablet and mobile level of responsiveness.

    €141 - €424
    €141 - €424
    30 tarjoukset

    There is an open source WBO whiteboard I want to allow the user in my WBO forked version to edit text directly on SVG without noticing the transition between editing and viewing modes. I was thinking about a contenteditable div that appears when the user clicks on a text area, and that can be closed by clicking the cursor away from it. The text displayed in textarea should look identical to the text drawn on SVG. It must have cross browser compatibility on Firefox, Chrome and Edge. My WBO version code will be sent to the selected freelancer. An example below.

    €153 (Avg Bid)
    €153 Keskimäär. tarjous
    39 tarjoukset

    Hi, I’m looking for a full-stack WordPress developer to develop a Quran plugin for a Quran website The website's database already contains all Quran data including text, translations, audio etc. It will be your job to convert the Quran into something interactive like the following websites: The following features will be required: • Select translation • Word-by-word translation, transliteration and recitation • Change Quran font • Change format to verse-by-verse or continuous reading • Change theme You must be skilled in WordPress, PHP and Javascript. A full brief will be sent to you of the requirements. Looking for a long-term working relationship. Thanks for looking!

    €910 (Avg Bid)
    €910 Keskimäär. tarjous
    168 tarjoukset

    To get all the orders & payments sync between Shopify & Oddo. Preferable how have done it beofre

    €438 (Avg Bid)
    €438 Keskimäär. tarjous
    40 tarjoukset

    I need a Quasar framework and Vue.js Cordova expert to help me create a new web application from scratch. I already have a design in mind, so I am looking for someone who can help me bring my vision to life. The project timeline is 3-4 weeks, so I need someone who can work efficiently and deliver high-quality results within that timeframe. Skills and Experience: - Expertise in Quasar framework and Vue.js - Experience in creating web applications from scratch - Ability to work efficiently and meet strict deadlines - Strong design skills to bring my vision to life

    €8 / hr (Avg Bid)
    €8 / hr Keskimäär. tarjous
    12 tarjoukset

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