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 Freelancer.com 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 Freelancer.com 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, Freelancer.com is the place to post your project. Hire our expert Javascript developers today!

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    663 trabalhos encontrados, preços em USD

    Recriar um exemplo de um preçário e embutir dentro de um layout já pronto.

    $18 (Avg Bid)
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    Conexão de API 16 horas left

    Estou precisando de um profissional para conectar uma API ao nosso sistema (Glide). Nossa API específica foi criada no Apps Script, então teremos que usar essa para a conexão. Por último, preferimos usar JavaScript para a conexão da API. Se você possui as habilidades necessárias para executar essa tarefa, entre em contato e vamos conversar para ver se conseguimos fechar o negócio. Obrigado.

    $39 (Avg Bid)
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    I am seeking a skilled developer to create a wallet Javascript SDK, as well as a nodejs. The ideal candidate should have experience with JavaScript programming language. The project requires support for advanced features such as multi-signature and path payments. Therefore, the developer should be experienced in integrating these features into the SDK. Comprehensive documentation and testing is a must for this project. The developer should have experience in creating SDKs and writing detailed documentation. Key Skills: - Strong experience with JavaScript programming language - Solid understanding of wallet features - Experience in integrating advanced features such as multi-signature and path payments - Strong documentation and testing skills If you have the necessary skills for...

    $85 (Avg Bid)
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    4 ofertas

    Hi. I need a pine script developer who can write a small script for a logic to work on TradingView. The logic that I need is described in the doc file I attached.

    $41 (Avg Bid)
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    5 ofertas

    I am seeking a skilled Java script developer to help me with a project that requires the print function. Specifically, I need to send data to a printer from my web pages. The ideal candidate will have experience with printing web pages using Java script. Requirements: - Experience with Java script print function - Ability to print web pages - Knowledge of custom print settings - Familiarity with print preview - Attention to detail Additional information: - The project is time-sensitive and I am looking for someone who can start immediately - Strong communication skills are essential - Please provide examples of previous work that demonstrate your expertise in this area

    $13 / hr (Avg Bid)
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    9 ofertas

    We can simulate an Android device on a Chrome browser. You can open the Chrome Developer Tool and do it with the Switch Device Toolbar feature. I want it to be applied immediately when running chrome browser without opening the developer tool with chrome extension.

    $556 (Avg Bid)
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    JavaScript 6 dias left

    I am looking for a skilled Javascript developer who can create dynamic website elements using React. The desired functionality of the code includes adding interactive features and animations to the website. There are no specific platform or framework requirements, but experience with React is preferred. The project deadline is more than 2 weeks, giving ample time for the developer to complete the task. Ideal skills for this project include proficiency in Javascript, React, and experience with creating dynamic website elements.

    $15 / hr (Avg Bid)
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    We can simulate an Android device on a Chrome browser. You can open the Chrome Developer Tool and do it with the Switch Device Toolbar feature. I want it to be applied immediately when running chrome browser without opening the developer tool with chrome extension.

    $300 (Avg Bid)
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    4 ofertas
    API Creation 6 dias left
    VERIFICADO

    API Creation for UPI Payment - Purpose: Data retrieval and manipulation - Required data fields: Payment amount and details, User information, Transaction history - Display Q R Code, Need button saying “use upi app to do payment” - Ideal programming language: Python

    $99 (Avg Bid)
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    I am looking for a Fullstack developer with experience in web scraping using Selenium. The project requires the scraping of usernames and follower counts from Instagram, Twitter, and LinkedIn. The scraped data should be stored in a JSON or XML file. The web scraping process should follow specific requirements, which will be discussed with the developer. Ideal skills and experience for this job include: - Experience with web scraping using Selenium - Proficiency in Fullstack development - Knowledge of JSON and XML file formats - Ability to work with specific requirements for the web scraping process. Note- I have HTML Need to add script on UI and it will work local system i will provide

    $237 (Avg Bid)
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    12 ofertas

    I am looking for a skilled developer to build an ecommerce website to sell physical products. The platform will be custom-made to suit my specific needs. One of the key features of the website will be a recommendation gift test that offers personalized gift ideas for specific occasions. The ideal candidate for this job would have experience in building custom ecommerce platforms and creating personalized recommendation algorithms. They would also have a good understanding of different gifting occasions and what types of gifts are appropriate for each, A part of the work is already there, but it still needs to be finished, more information in DM

    $481 (Avg Bid)
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    We can simulate an Android device on a Chrome browser. You can open the Chrome Developer Tool and do it with the Switch Device Toolbar feature. I want it to be applied immediately when running chrome browser without opening the developer tool with chrome extension.

    $307 (Avg Bid)
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    6 ofertas
    JavaScript PHP - Troubleshooting 6 dias left
    VERIFICADO

    I am in need of a JavaScript and PHP developer to troubleshoot a specific function that is not working as intended on my website. The ideal candidate will have experience in both languages and be able to quickly identify and fix the issue. The project requires attention to detail and the ability to work with both PHP & JavaScript. The issue: our website parses a remote text file for 4-5 precious metal prices. These prices are inserted into a local MySQL DB. This function is working fine. The stored prices are then displayed on the website - the price DISPLAY updates every 60 second’s automatically. Just 2-3 days ago, the automated price refresh stopped updating in the browser automatically. If you manually fetch ( refresh the browser ) the prices will update. There may be a ...

    $28 (Avg Bid)
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    I am looking for an intermediate Angular developer who can work on building a Frontend Application involving API integration with microservices. I have specific API that I would like to integrate into my project. The ideal candidate should have experience working with Angular, Authentication and API integration. The project is expected to take about 4-6 weeks to complete.

    $913 (Avg Bid)
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    56 ofertas
    php coder api experience 6 dias left
    VERIFICADO

    I need a php coder that wants to work IMMEDIATELY with to help me organize a script that connects a api with a database. Its just one fine, if job is well done, I have need for long term relationship.

    $12 / hr (Avg Bid)
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    38 ofertas

    I am looking for a freelancer to create an entertaining animated CSS animation for a roulette on my website. The animation should be a roll rather than a spin since it's a straight-line roulette and not one of those wheel ones. I have a specific design and color preference; I want the animated design to be vibrant and colorful with minimalistic styling. I'm looking forward to work with a professional and experienced freelancer who can help me to bring this project to life!

    $27 (Avg Bid)
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    15 ofertas

    Looking for a freelancer who can develop a Whatsapp bot integrated with Google Forms for survey/feedback collection. The ideal candidate should have experience in building Whatsapp bots and should be able to create automated replies based on keywords. The preferred method for storing the collected data is Google Sheets. Additional requirements include: - Ability to support multiple languages - Integration with other platforms is a plus If you have experience in building similar projects, please apply with your portfolio.

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    3 ofertas

    I am looking for a developer to create a cross-platform app that functions like Google Forms, specifically for creating registration forms. The ideal candidate will have experience with cross-platform development and be able to implement user authentication. In terms of features, I am looking for the following: - Cross-platform compatibility (iOS and Android) - User authentication for added security - Customizable templates for form creation If you have experience with these requirements and are able to deliver a high-quality product, please reach out to me with your proposal. Thank you.

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    csgocreation 6 dias left

    I am seeking a creation of a csgo gambling website which allows crypto as a deposit but skins as a withdrawal. The basic games are required such as coinflip, case battles, and case opening. Has to be fun! Also have great features.

    $1288 (Avg Bid)
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    21 ofertas

    Industrial Monitoring Platform with Remote Monitoring through 360-degree Imaging We are looking for a skilled programmer to create a platform for remote monitoring through 360-degree imaging. The platform will be used for industrial monitoring purposes, and will require programming expertise in any of the following languages: Python, JavaScript, or C++. The remote monitoring will need to occur on an hourly/daily basis, with the capability for real-time monitoring if needed. Our ideal candidate will have experience in developing similar platforms for industrial monitoring. Key Features: - Remote monitoring through 360-degree imaging - Hourly/Daily monitoring frequency - Programming expertise in Python, JavaScript, or C++ - Experience in industrial monitoring platforms - Real-time monit...

    $170 (Avg Bid)
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    Chrome Extension 6 dias left
    VERIFICADO

    Hello all, I am looking to build a chrome extension that does the following: 1. Extension will run a python script in the backend (I think via API) 1. Python script is already completed and works. It grabs discord messages in real time. 2. Script is currently being run locally and writes to a sql table on my machine 2. I want the messages to be sent to a webhook url 3. Webhook urls will be input by the Chrome user 4. You will ensure that Python is run and hosted in any cloud like PythonAnywhere, AWS, Azure, GoDaddy, Digital Ocean, Docker 5. The extension should provide ability for the user to input two fields for filtering of messages: Channel ID and MemberID 6. Extension should be written in a way that it can be enhanced with additional functionality in the future. Code must be clean, sc...

    $161 (Avg Bid)
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    school website 6 dias left

    I am looking for a freelancer to build a school website that reflects our school's unique identity! Our primary goal is to provide information to parents and students to help them get the best out of their educational experience. The website should be vibrant, informative, and easy to navigate. The main pages we are looking for include: Homepage, About Us, Academics, Admissions, and Contact Us. We would like the design to be colorful and vibrant; minimalist yet modern in order to reflect our school's unique identity. We would like to use the most up to date technology such as Bootstrap, JS and JQuery in this project and therefore do not wish to include WordPress. So if you're an experienced freelancer focusing on inventive web development with an eye for detail, this might ...

    $96 (Avg Bid)
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    25 ofertas

    Developing Back End of a Website using Java and MongoDB I am looking for a skilled developer to create the back end of my website from scratch. I would prefer to use Java as the programming language and MongoDB as the database. However, I am open to suggestions if you think that there are better options. Integration with Third-Party Services and APIs I am not sure if I require integration with any third-party services or APIs. If you have any suggestions, please let me know. Ideal Skills and Experience - Strong experience in Java programming language - Expertise in MongoDB database - Familiarity with integrating third-party services and APIs - Good understanding of website development and back-end architecture - Ability to communicate effectively and collaborate with the front-end dev...

    $104 (Avg Bid)
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    14 ofertas

    I am looking for a front-end web developer to create a property aggregator website from scratch. The website's main purpose is to provide users with a comprehensive list of properties for sale or rent. I am open to suggestions regarding the website's design, and I am looking for a developer who can provide creative and modern ideas. The website should have advanced search functionality, allowing users to filter properties by location, price range, and other relevant criteria. Ideal skills and experience for the job would include proficiency in HTML, CSS, JavaScript, and experience with front-end frameworks such as React or Angular.

    $106 (Avg Bid)
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    18 ofertas

    I am seeking a skilled VueJS programmer to help me build a new application for my existing business. The project is aimed at creating an innovative and user-friendly application that will meet the needs of my target audience and enhance their experience with my business. Ideal skills and experience for this job include: - Advanced proficiency in Vue3 and related technologies - Strong understanding of front-end web development and design principles - Experience with building scalable and responsive web applications - Ability to work collaboratively with a team and communicate effectively - Prior experience in Vuetify library and Typescript is a plus The project has a timeline of more than 4 weeks, and I am looking for a committed and reliable programmer who can meet deadlines and delive...

    $1109 (Avg Bid)
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    69 ofertas

    I am looking to create a chatbot using OpenAI that responds to users with informational/FAQ questions gathered from a private knowledge base. The private knowledge base will need to be gathered and organized, so I am looking for someone who can help with the same. I am aiming for a chatbot which can respond naturally to queries posed by users, making their life easier. The chatbot should have the capability of understanding a wide range of linguistic queries posed by users in different ways and respond back accurately with the right information.

    $323 (Avg Bid)
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    33 ofertas

    We can simulate an Android device on a Chrome browser. You can open the Chrome Developer Tool and do it with the Switch Device Toolbar feature. I want it to be applied immediately when running chrome browser without opening the developer tool with chrome extension.

    $130 (Avg Bid)
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    5 ofertas

    Flashcard editor and multiplayer wiki game. With sappienz you will test your knowledge of a foreign culture/language or academic subject together with your classmates and friends in a varied and fun way.

    $17 / hr (Avg Bid)
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    I am looking for a developer to help me with my project to create pet profiles within the Bookly wordpress plugin. The ideal candidate for this job should have experience in working with WordPress plugins Bookly and WooCommerce. Requirements: - Detailed medical history to be included in each pet profile - Ability for users and medics to upload documents such as vaccination records - Pet profiles should be displayed on separate pages for each pet and be able to customize their image within user dashboard. Required fields: Name, Species, Breed, DOB. Store employees need to be able to attach files and notes to the pet profiles and also the appointment. All pet data needs to show on appointment sheet in back end and pets and pet details need to show on customers profile. - Users need to be a...

    $184 (Avg Bid)
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    I am looking to have several Python GitHub solutions tied together into one tool with some modifications to suit my use case. I am looking to modify a recommendation engine to use different inputs.

    $157 (Avg Bid)
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    31 ofertas
    magento 2.4 quantity box 6 dias left
    VERIFICADO

    I am looking for a Magento 2.4 developer to create a quantity box for product list pages, search list, front page, product page. I have attached screenshot to show how should look like. and also we need the following improvements - when quantity added to basket, it will display added quantity in basket per the attachment suggest - currently if requested quantity not available, magento not adding anything. For example customer request quantity 10 but if let say available quantity 8, magento only suggest not available quantity. we would like to achieve the following; let say in the same example if the customer order 10 but available quantity 8, magento by default will add the available quantity which is 8 and display note that only 8 available by the way, we won't share login detai...

    $162 (Avg Bid)
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    22 ofertas
    website touch up 6 dias left
    VERIFICADO

    I am looking for a website touch up that involves design/layout changes. The preferred design style is minimalist, and I would like to include custom icons. I am seeking a freelancer with experience in web design, specifically in creating minimalist layouts and custom icons. The ideal candidate should also have skills in HTML, CSS, and JavaScript to make the necessary changes to the website's functionality.

    $15 / hr (Avg Bid)
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    89 ofertas

    I am looking for a skilled developer to create a location-based webapp using Django or Flask. The main purpose of the webapp is to locate discounted services in the area, and I would prefer to integrate Google Maps as the map service. The webapp should have user accounts and authentication, allowing users to sign up and log in securely. Other features and functionalities are not required, but the ability to customize user preferences would be a plus. There should be a separate business user page to allow participating businesses to post their discounted services to the Webapp database. Ideal skills and experience for this job include: - Proficiency in Django or Flask - Experience with Google Maps integration - Strong understanding of user authentication and security measures - Ability ...

    $15 / hr (Avg Bid)
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    I am looking for an experienced AI developer to create an automatic tool that will help me list multiple items on my website in just a few minutes. The tool should be able to automatically generate product descriptions, upload images, and input pricing information. Ideally, the tool would also be able to automatically update inventory levels and prices as needed. The ideal candidate will have extensive experience in AI development and be able to work quickly and efficiently. They should also have experience working with e-commerce platforms and be familiar with best practices for product listing and optimization. If you are interested in this project, please submit a proposal outlining your experience and qualifications. I am looking for a developer who can deliver high-quality work and ...

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    30 ofertas

    I have a curl class to retrieve cookies and fieldsets to external site and build a query to pass on curl request to check existence of a fixed email address value. This class used to work before but has now stopped working. Destination page still working as before and rendering content data but CURL is not succeeding. I need someone to debug the issue and resolve it on existing PHP Curl resources.

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    I am looking for a developer to add a chat room to my existing website with WebRTC The chat room should have both text-based and audio and video functionality. I have a preferred chat room software in mind, WebRTC. However, I am also open to suggestions. Ideal skills and experience for this job include: - Experience with integrating chat rooms into existing websites - Knowledge of text-based and audio/video chat functionality - Familiarity with WebRTC - Ability to troubleshoot and debug any issues that arise during the integration process.

    $8 / hr (Avg Bid)
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    We are looking for a freelancer to help us with updates to our website. Specifically, we need programming and updates on [1st phase: Backend from existing PHP 5.6, framework Laravel 5.0.35 and 2nd phase Frontend javascript, framework phaser 2 for the most up-to-date versions 3rd phase: new developments in laravel].The timeframe we am looking at is 30 days. If you think you have the expertise and desire to take on this task, please contact me. Detail of task instructions written in Portuguese. It is mandatory to understand Portuguese.

    $15 / hr (Avg Bid)
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    35 ofertas

    I am in need of a developer who can help me fix coding errors that are causing my website to consistently fill up error log files. The website was built using custom code and I am experiencing coding errors. Unfortunately, I do not have access to the original developer. Ideal Skills and Experience: - Experience working with custom code - Proficient in programming languages such as PHP, HTML, and JavaScript - Knowledgeable in website debugging and error fixing - Ability to work independently and efficiently - Excellent communication skills to provide updates on progress and any necessary information. Although I am not sure about the error messages or logs related to the issue, the developer should be able to identify and fix the issue efficiently. Experience in debugging and troublesho...

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    Fix Paypal Payment Error 500 :2 GET 500 Error displayed when trying to pay with paypal. Worked fine before updating PHP Version. Running on PHP8.1 on BSD13.1

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    Lead Capture Form using API 6 dias left
    VERIFICADO

    I am looking for a developer to create a Lead Capture Form using the GVO API. The form should capture the lead's name and email only. I do not have a preferred design or layout for the form, but I just need the code to add the form to my Lead Capture Page. Ideal skills for this job include experience with API integration and web development. Please let me know if you have any questions or suggestions for the project. Thank you!

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    I am looking for a developer that got already a binary trading platform script( like ) in php backend that will be available on both web-based and mobile app platforms. demo account and featured admin pannel is required.

    $549 (Avg Bid)
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    16 ofertas
    Drupal Chatbot Integration 6 dias left
    VERIFICADO

    We areTailwind CSS and ChatGPT 3.5 into our existing Drupal site. The chatbot will be used mainly for providing general information and FAQs to our website visitors. Ideal skills and experience for the job include: - Proficiency in Drupal development - Knowledge of ChatGPT API - Experience in integrating chatbots into Drupal sites - Familiarity with Svelte framework and ChatGPT 3.5 Chatbot Integration Project Tasks - Embed our prebuilt chatbot into the appropriate Drupal module. - Integrate website image cards functionality. - Ensure the chatbot is centered on both desktop and mobile browsers. - Preserve chatbot GUI (Graphical User Interface) and functionality. CHATBOT GUI SOFTWARE STACK • Meta-Framework: SvelteKit • Styles/Components: TailwindCSS & DaisyUI PROJECT TIMEF...

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    Our company is seeking an experienced programmer to work on our existing web application that is developed on Codeigniter Framework (MVC), php, sql, javascript and Nodejs. The ideal candidate should have a strong knowledge and experience in these technologies. Specifically, we are looking to add and improve the following functionalities: We have a deadline of completing the project within three months, so the ideal candidate should be able to work efficiently and deliver high-quality work within this timeframe. If you have the skills and experience required and are interested in this project, please submit your proposal.

    $1848 (Avg Bid)
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    Coloring Page Creation Script 6 dias left
    VERIFICADO

    I am looking for a professional and skilled PHP programmer to help me build a website. All the front-end coding is already done and I need you to help me build the back-end using PHP and Javascript. Before we start working together, I need to test out your skills and have you build a Coloring Page Creation Script, which is going to be the main function on the website. Please see the attached files, where you'll find a complete process of how I want the script to work, the background needed for the script, and also a demonstration of the stroke function. If you can build this script flawlessly, then I want you to help me build the rest of the website. I'm looking forward to working with you and if you have any questions, please let me know.

    $57 (Avg Bid)
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    31 ofertas

    Looking for an experienced backend developer to help with API integration and development. The ideal candidate should have experience with Python and be able to integrate RESTful APIs. We are looking for someone who can complete the project within 1-2 weeks.

    $98 (Avg Bid)
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    8 ofertas
    NEED A BACKENDDEVLOPER + API 6 dias left
    VERIFICADO

    Looking for an experienced backend developer to help with API integration and development. The ideal candidate should have experience with Python and be able to integrate RESTful APIs. We are looking for someone who can complete the project within 1-2 weeks.

    $12 (Avg Bid)
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    12 ofertas
    Coding project 6 dias left

    I'm looking to hire a talented programmer to help me develop a code to find perfect solution for CSE Homework questions . The programming language I prefer is Java, but I'm open to other languages such as Python and JavaScript. I don't have any particular framework in mind, but a strong understanding of software engineering and coding fundamentals is essential for this task. The purpose of the code is to help me to clear all my homework questions with best marks. The ideal candidate should have experience working with Java as well as any other language that may be necessary for the job. Knowledge of various coding libraries and frameworks will also be useful. Having a portfolio of projects you have previously worked on will also be a great advantage. If you think you have ...

    $14 (Avg Bid)
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    6 ofertas

    Looking for a freelancer bidder to assist me in bidding on various projects. My budget for this project is less than $500. The ideal candidate should have experience in bidding on projects related to web development, graphic design, and content writing. Communication through Freelancer.com messaging system is preferred.

    $18 / hr (Avg Bid)
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    34 ofertas
    live news map 6 dias left

    My app is done but i need help to make Live stream with react native and firebase to connect in my application

    $141 (Avg Bid)
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    16 ofertas
    TamperMonkey Script 12 horas left
    VERIFICADO

    I am in need of a TamperMonkey script to automate tasks on a specific website. The purpose of the script is to perform simple automation tasks. The ideal candidate for this project should have experience in TamperMonkey scripting and automation. Requirements: - TamperMonkey scripting experience - Experience in automation - Ability to perform simple automation tasks Skills: - TamperMonkey scripting - Automation If you are interested in this project, please provide examples of your previous work in TamperMonkey scripting and automation. *Basically the script just needs to click on some dropdowns and at the end splash on the screen the Data with button to copy.* *We will need to use the 'AnyDesk' software for you to have access to the company's internal website.*

    $30 (Avg Bid)
    Urgente
    $30 Média
    9 ofertas

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