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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    775 jobb har hittats, med prissättning USD
    JSON interface 6 dagar left
    VERIFIERAD

    I need some code written for Godot and code written in Javascript to read and write from a json file. The Javascript code will run from a web browser to read and write a settings file which the Godot software will access when running. Both the Godot and web interface will need to be able to read and write to multiple json files. The code should be generically written and well commented so I can adapt it to my requirements. I will need to see proof of operation of the code which will be used in an ubuntu environment.

    $74 (Avg Bid)
    $74 Snittbud
    7 bud

    Hello, I am looking for an experienced developer to help me build a multi step form on WordPress. It will not be used for donations or payments just for info collection. I already have a design. I'm looking for an individual with expertise in WordPress form building who can make sure the form will secure and mobile responsive. I can get a plugin called formidable forms if it's easier for you. I have attached the design of the form. I am using Oxygen builder on wordpress. Ideally I would like to send the form info to my crm or turn it into a pdf at the end but not necessary. Here are the form functionalities needed: Ability to upload Customer needs to be able to sign an attached pdf online on step 4 where it says carrier agreement. Conditional logic I have marked the fields t...

    $164 (Avg Bid)
    $164 Snittbud
    27 bud

    We need site like with all panels

    $132 (Avg Bid)
    $132 Snittbud
    9 bud
    Link Cloaking 2 dagar left
    VERIFIERAD

    Need someone to cloak around 35 affiliate links for a hosting reviews site. I have a new site at that has about 36 affiliates links and want freelancer to check and see which need cloaking and complete the task-need to see an example of work before proceeding

    $54 (Avg Bid)
    $54 Snittbud
    41 bud

    Need a Developer with Java, Angular and cloud experience Monthly - 10 k

    $102 (Avg Bid)
    $102 Snittbud
    4 bud
    Job Portal 6 dagar left

    we are looking for developers who have developed job portals like work India or develop this kind of job portal

    $1495 (Avg Bid)
    $1495 Snittbud
    38 bud
    Payment Solutions 6 dagar left

    Hello, I wish to have someone who can work on Visa SDK to develop payment solutions as per our need. We can talk in detail and figure out possibility, You can bid on this and we can talk further in chat. (Previous work experience should be in any Payment module or blockchain payment system would be plus point)

    $7 / hr (Avg Bid)
    $7 / hr Snittbud
    17 bud
    KSLRX202303. UI developer 6 dagar left
    VERIFIERAD

    We are looking for UI developer with JS and React JS or Angular JS experience. Its 20hrs work at present.

    $107 (Avg Bid)
    $107 Snittbud
    13 bud

    Help me convert images into responsive( desktop and mobile) html 5 css and js.

    $3 / hr (Avg Bid)
    $3 / hr Snittbud
    38 bud
    Web-based 3D viewer 6 dagar left
    VERIFIERAD

    I am looking for someone who is committed with the necessary skill-set to deliver project. Please apply here with a brief comment about your background, professional aspirations, and samples of your related work. Project description: Need a website where User can upload, view, measure and interact with 3D models. Must support file formats: [ .step, .stp, .stl, .igs, .iges, ] Example link: The PDF attachment contains all of the project requirements in detail. If there are any stated items in the PDF file that you are unable to deliver, be sure to note it in your proposal using a distinct heading and bullet points. The website should work flawlessly on all platforms (desktop, mobile, and browsers) and devices. Payment will be released after completion of project. In your proposal p...

    $302 (Avg Bid)
    $302 Snittbud
    10 bud

    Need a help for one task there will be array of objects of rights need to add search functionality and add and remove right functionality

    $13 (Avg Bid)
    $13 Snittbud
    6 bud

    Hi there, Please read this document carefully as I’ve collected all required information here. I am searching for someone who can build me an admin dashboard for the Restful API I’ve recently built. The API is about deploying and maintaining services on my local infrastructure. The admin dashboard should be used by my clients to manage these services

    $555 (Avg Bid)
    $555 Snittbud
    44 bud
    Frontend Website work 6 dagar left
    VERIFIERAD

    We have to do the frontend work of a website with proper HTMl,CSS and Javascript and clean coding parameters should be followed. Total 750 interlinked pages are there and unique pages are 30. Homepages is already been made for the website.

    $12 / hr (Avg Bid)
    $12 / hr Snittbud
    55 bud

    Hello, I am in search of an experienced database developer who can design and develop a NoSQL database. Ideally, the developer would have an expertise in node js to produce the best end results. Expertise in this field is essential as I need the highest quality product. Therefore, I am looking for a sophisticated database developer with an expertise in NoSQL, node js, and a comprehensive knowledge of database development. If you think you have the skills and knowledge necessary to take on this project, I look forward to hearing from you. Need to create tables, write complex queries.

    $1 / hr (Avg Bid)
    $1 / hr Snittbud
    3 bud
    calculator script 6 dagar left

    calculator code html. simple calculator And good work.

    $259 (Avg Bid)
    $259 Snittbud
    22 bud

    I am looking to hire an intermediate PHP developer. I have one small PHP task which need to get started today. Candidate must be familiar with JavaScript as well and must start today. Write "Let's Start" in beginning of the proposal for consideration.

    $18 - $151
    Försegla
    $18 - $151
    57 bud

    I am looking for an experienced full-time Flutter developer to work on mobile Android devices. The project will be a long-term commitment, god will for many years to come. Expert-level knowledge in mobile application development with Flutter is a must, and the developer should be experienced in developing applications for Android devices specifically. If you think you have the experience and skills to successfully complete this project, I invite you to apply now! * looking for someone to work with us during USA hours. Los Angeles hours 8am to 4pm Monday to Friday. * must speak and understand English very well (we will test you before hiring you. if your English is good please don't apply. and 1000% we will not hire you) * you will be required to do many meetings via zoom video and ...

    $570 (Avg Bid)
    $570 Snittbud
    53 bud

    Install the source code to form a complete website

    $12 (Avg Bid)
    $12 Snittbud
    13 bud
    Node.js API Developer Needed 6 dagar left
    VERIFIERAD

    I'm looking for an experienced Node.js developer to help build an API for my project. The API needs to be able to communicate using RESTful protocol, and access a Mongo DB database. The project is a web application that requires a well designed, secure, and performant API layer. The Node.js developer must have experience with Node.js, as well as experience working with custom APIs. Additionally, the developer should also have a strong knowledge of Mongo DB or a related NoSQL database. Building the API layer securely, scalably, and performantly is the primary goal. If you have the skills required and are excited by the prospect of developing a cutting-edge API, please get in touch and let me know that you have the skills and expertise necessary to deliver this project. I look forward...

    $3 / hr (Avg Bid)
    $3 / hr Snittbud
    25 bud
    Flash mopile app 6 dagar left
    VERIFIERAD

    I am looking for someone to develop a Flash mobile app that will run on iOS and possibly integrate with external services. The developer should also consider the potential need for an user account registration feature. I'm open to additional suggestions and ideas to make sure that the app meets my end goals. Please reach out with any questions or ideas. Thank you!

    $20 / hr (Avg Bid)
    $20 / hr Snittbud
    53 bud

    I am looking for a skilled programmer to design and create a blog index page and also a template for individual blogs, using ReactJS. Additionally, I have an existing design and color palate that I would like to use for the project, as well as assets such as photos and videos that are to be included. I am looking for an experienced programmer who can produce a high-quality product in a timely manner. I would like this to be completed within 24-48 hrs. Just two-page components need to be created. I'm open to you using templates from GitHub etc. Looking forward to seeing your ideas. Some inspiration would be Blog Index Pages: Individual Blog Post:

    $41 (Avg Bid)
    $41 Snittbud
    10 bud
    Footer Redesign 6 dagar left

    We are hoping to have our footer redesigned to be like the attached (). Could you also include hover text with the newsletter description? "Get news, tips, and advice on delivering a remarkable freight forwarding experience for customers delivered straight to your inbox."

    $6 / hr (Avg Bid)
    $6 / hr Snittbud
    35 bud
    Web Developer 6 dagar left

    Dear sir/madam Hi, Hope you are doing well! Thanks for sharing your project requirement with us. It will be our great pleasure to work on your project. I have checked your requirement, yes we can do it, because we already work on similar requirement in past. We have right skills to work on this assignment. We will complete the work as per requirement. ....... I can get this done in 72 hours. Please consider me and give me a chance to impress you by my quality services.

    $29 (Avg Bid)
    $29 Snittbud
    19 bud

    We need to create a chatgpt chatbot that will be trained on a sales process for our business. We will assign it a phone number through something like Twilio. Customers communicate with us through sms only. We have historical data to provide for the training/fine tuning. We will need to create a database for it to interact with, where it can pull info and pictures from to send to customers when they ask for such things. We need help with all the integrations and training, testing, deployment, and ongoing support.

    $7088 (Avg Bid)
    $7088 Snittbud
    21 bud

    THOSE who don't know coding/programming please DO NOT BID. We need individual website developer for our clients. 1. WordPress plugin and theme PROGRAMATICALLY modification as per client requirements. 2. one who can do any type of design as per requirement. 3. Website Must be good in mobile view too. 4. Can customize any website and can design any given requirement. We will provide all graphical work. Only genuine individual developer please contact. Long term work for many project. Please bid minimum cost.

    $35 (Avg Bid)
    $35 Snittbud
    5 bud

    Dear sir/Madam, "We provide hostinger Hosting and Domin also" I am writing to propose a website and mobile application development project for your company, [], using ReactJS, NodeJS, MongoDB, React Native, Flutter, Php, and Laravel. The main objective of the project is to develop a user-friendly, mobile-responsive, and SEO-optimized website and mobile application that provides tax filing services to individuals and businesses in India. To achieve this objective, the project will involve the following steps: Planning and Analysis: In this stage, we will gather and analyze your requirements, identify the target audience, and plan the features and functionalities of the website and mobile application. Design and Development: Once the planning and analysis stage is complete, w...

    $92 (Avg Bid)
    $92 Snittbud
    9 bud

    I need the Angular.js expert needed for multiple jobs. Details will be discussed.

    $7 - $67
    Försegla
    $7 - $67
    5 bud
    Angular Dashboard 6 dagar left

    Hi there, !! Please read the attached document carefully as I’ve collected all required information here. !! I am searching for someone who can build me an admin dashboard for the Restful API I’ve recently built. The API is about deploying and maintaining services on my local infrastructure. The admin dashboard should be used by my clients to manage these services. This task is about the development of the technical dashboard and NOT about designing it. It is enough if you could add some layout using Bootstrap 5 and this is still required! All logical belongings should be layouted together as described below.

    $196 (Avg Bid)
    $196 Snittbud
    19 bud

    We are looking experienced web developer to migrate an old project from Angular to ReactJS, and then add (code) new features under the new framework. This web app does integrate third parties component (client side sdk's), and needs API integration (REST API), JWT, security layers, etc. We prefer developers speaking Spanish or English

    $30 / hr (Avg Bid)
    Sekretessavtal
    $30 / hr Snittbud
    55 bud

    Como guía podrian usar la pagina web de Me gustaria que la pagina web en la cual se implemente html, css y javascript que toque estos puntos y que sean de forma básica y superficial Interfaz fácil de usar: la página web debe tener una interfaz fácil de usar para que los usuarios puedan navegar sin dificultad por ella y encontrar rápidamente los eventos que buscan. Esto implica una buena organización de los eventos, un buscador efectivo, un menú claro y categorías de eventos bien definidas. Información detallada del evento: es importante que la página web proporcione información detallada sobre el evento, como la fecha, la hora, la ubicación, el tipo de evento, los artistas o participantes, la dura...

    $32 (Avg Bid)
    $32 Snittbud
    3 bud
    I need a web crawler. -- 4 6 dagar left
    VERIFIERAD

    I need someone help me scrapy data from a target website. Hope you use python crawler to do this. I will provide you the target output format and keywords list. The output includes the source code and result.

    $43 (Avg Bid)
    $43 Snittbud
    33 bud

    Build me a website with html css and java script. The website is for the final year project of my college. It should be a website showcasing the engineering colleges in pune and use filters like Amazon to filter out colleges making a personalised list of colleges for each person

    $257 (Avg Bid)
    $257 Snittbud
    37 bud

    I am in need of a freelancer who is experienced with HTML/CSS to help fix my header menu, footer and modify 2 pages so that they are responsive for desktop, tablet and mobile devices. The programming language used should be HTML/CSS. No image updates are needed. The freelancer should have an understanding of HTML/CSS proficient enough to make the changes efficiently and quickly. I need help in making this website more efficient and easy to use. Whoever can do the job will be my go-to person for any future updates and changes to the website. The header menu (Mega menu) must be changed to full width. Footer menu must look better and be responsive for tablet and mobile. Homepage and 1 additional page must be modified to look amazing on tablet and mobile. We are currently usingElementor on ...

    $42 (Avg Bid)
    $42 Snittbud
    62 bud

    Warning: Only working directly with Developers only No third parties or Sales Guy or CEO prohibited on this project: will be reported n case of violence: most of the bidders are just time wasters so please make sure you are not one of them dum persons. thanks we are looking Expert in Vue JS - Front End - Web API .Net core and good knowledge of handling web api .net core and store procedure this gonna be a long term project for a right and skilled dev we are looking, so no time wasters please bid only if you are skilled full because technical screening will be done before hiring over here. we have project just started and right candidate expection is to grasp and get going on it we are easy going company and only required a quality and on-time results that is it. we do throw bonuses based ...

    $33 / hr (Avg Bid)
    $33 / hr Snittbud
    53 bud
    help setup google maps api 6 dagar left
    VERIFIERAD

    As a client, I'm looking for help to set up a Google Maps API. The main purpose of the API is to track locations, so no custom marker icon is required. In terms of customization, I need something basic. I'm looking for a freelancer who can get the API up and running so it will fulfill my requirements. Thanks for your help! I am unable to setup billing for google maps api , hence not able to use it

    $12 (Avg Bid)
    $12 Snittbud
    8 bud

    I am looking for an experienced freelancer to help me build a quick trade panel through Finvasia's API. I am looking for a simple UI without any admin access. It should work as a portable version across OS, mainly windows. The panel should enable to enter and exit orders manually upon the click of a button. Execution delays should be near to 0. Other items can be discussed. Only people who can show prior experience working with Finvasia API will be considered.

    $344 (Avg Bid)
    $344 Snittbud
    4 bud
    Vue Frontend Developer 6 dagar left
    VERIFIERAD

    I am looking for a skilled Vue frontend developer to build a web application for me. I have a specific design idea in mind, and the project should be done using Vue (the ideal candidate would have experience with both Vue2 and Vue3 using Composition API). The candidate needs to have experience spinning up applications from scratch (setting up authentication, initial store architecture, routing, error handling, and general app structure). If the candidate speaks Spanish its a plus. Before choosing the candidate we would like to have a Zoom conversation to check on the candidates experience, if you are not willing to do that, please do not bid. This will be an ongoing project per hour where we will tackle various tasks.

    $19 / hr (Avg Bid)
    $19 / hr Snittbud
    68 bud

    Verificador de dominio . y formulario para solicitud. (ver )

    $29 (Avg Bid)
    $29 Snittbud
    5 bud

    Hey I am looking at building a sharetribe flex marketplace (maybe engaging developer in a few months). In the meantime I am wanting to see if I can adjust the Sharetribe Go with a certain request. My idea is around events vendor sourcing (venues, photographers, catering etc). i would like to adjust as below: - Keep all the sign up options as a marketplace lister with no change (e.g. sign-up and create listing. - Once listing(s) are completed return user to the profile page. - Hide all of the search functionality - do not let anyone except me as the Admin view all the listings that are submitted. -> the user will only be able to see their own listing. This would be for a short period of time, so you would need to be able to remove this injected code in future. Regards Matt

    $108 (Avg Bid)
    $108 Snittbud
    11 bud

    We are looking for who has worked on integration from nodejs /express to Microsoft Dynamic GP accounting software integration..

    $21 / hr (Avg Bid)
    $21 / hr Snittbud
    56 bud
    Modify Laravel Website 6 dagar left
    VERIFIERAD

    Using a github repo, update the source code to meet the requirement outlined in the statement of work and commit source code back to repo. Requires expertise in Laravel 8, PHP, Javascript/JQuery, SQL, Composer, NPM/Node.js, and CSS/SASS. The bulk of the website is done and working, this project is to provide updates based on new requirements.

    $670 (Avg Bid)
    Framhäv
    $670 Snittbud
    131 bud

    We are looking for an experienced WordPress developer with proficiency in Divi theme and CSV data manipulation to create a custom script for our website. The script will be used within a code block in our WordPress Divi site to read, parse, and display specific data from a linked CSV file. The CSV file will be updated daily and can be found at the following link: The CSV file contains a lot of extra data that should not be displayed. The first line of the file is header information that describes the data. Please note that the actual data may be spread across multiple lines. The header information is as follows: "url","authorsByline","articleId","clusterId","source","imageUrl","country","language","...

    $61 (Avg Bid)
    $61 Snittbud
    16 bud

    Easy 15-Minute Project for Expert Php Coder. All Files are attached. See Edit 1 Php File to delete contacts from the database. - Edit 1 Php file to add confirmation boxes. - confirmation box - Yes No - in - after deleted confirmation box - Contact Deleted else return - Not Deleted. Try Again - in See create database - use - edit - DeleteContact - to match database edit - adminapp-assets - to match databse edit - to delete contact using ---> add - confirmation box - Yes No - in add - after deleted confirmation box - Contact Deleted else return - Not Deleted. Try Again. add - when deleting add confirmation box - Contact Deleted else return - Not Deleted. Try Again. Total work = 1 file edit - - to make sure it deletes contact row, and gives the confirmation...

    $38 (Avg Bid)
    $38 Snittbud
    22 bud

    I'm seeking a more efficient method to automate the process of sending a book to my clients when they schedule an appointment with me. Currently, I'm utilizing Acuity Scheduling, which is integrated with my WordPress site and other platforms through Zapier. However, I still need to manually input each client's shipping address into my Amazon account and send the book as if I were ordering it for myself, which is time-consuming. I would greatly appreciate any suggestions to streamline this process. I'll pay $50 if I pick your solution.

    $146 (Avg Bid)
    $146 Snittbud
    27 bud

    I am looking for an experienced backend developer to help me with fixing a bug in my existing module. The module is working on the Yii2 framework, but I'm not sure which version. You will need to have expertise in Yii2 to complete this project. I already have a hosting service, so you won’t need to arrange that. However, there may be other code optimization or new modules required. If so, these will need to be discussed before the project starts. If you feel confident you can solve my problem quickly and accurately, please get in touch. I look forward to hearing from you.

    $15 (Avg Bid)
    $15 Snittbud
    4 bud

    I’m looking for an experienced web developer to implement Google Analytics tracking on my krpano-based virtual tour. The tracking code must be a Universal Analytics code and I already have an existing Google Analytics tracking ID. The virtual tour is based on krpano Viewer version 2.0. This project will require knowledge of krpano and Google Analytics, so I’ll need somebody who is experienced and reliable. Please let me know if you have any relevant experience or expertise in this area. I look forward to hearing from you!

    $160 (Avg Bid)
    Brådskande
    $160 Snittbud
    7 bud

    Must be able to meet on Zoom for initial consultation and also we need you to use our current task tracking software so we can justify each day to a client. I'm looking for an experienced programmer to help me with bug fixing on my existing desktop web application. The application is running on a Windows platform and needs to be examined for errors within the Angular, MongoDB, and Node.js files. This project is expected to take more than 2 - 5 weeks for completion because the quote takes into account a little less than a 100 bugs that need to be fixed which are fairly minor but need to be fixed nonetheless. If you are interested in taking on this project, please let me know your fees and availability. Thank you for your time and consideration!

    $13 / hr (Avg Bid)
    $13 / hr Snittbud
    33 bud

    Setup an algorithm to determine optimal appointment times. I attached a very simple example of data you may receive Here is the input you will have. Appointments (Array of objects containing time and location of an appointment) WorkingArea (Array of zipcodes, this tells you the entire region this user works in) MaximumDistanceBetweenAppointments (Number of miles the user is willing to travel for an appointment. must be inside WorkingArea) MinimumBufferTime (Number, minimum number of mininutes between ETA and start time of next appointment) NewAppointmentZipcode(Number, the zipcode where a user is requesting a meeting) UrgencyLevel (Scale of 0-4. 0 being get this person is asap and 4 being get the person in within 2 weeks) LengthOfAppointment(Number of minutes) UrgencyLevel will be use...

    $150 (Avg Bid)
    Garanterad
    $150
    3 bidrag

    Load more button and load images every time different

    $13 (Avg Bid)
    $13 Snittbud
    24 bud

    Hello! I am looking for a senior React + Chargbee developer to assist with a project I am working on. The project involves website creation, and does not require any additional technologies - it should be able to be developed using just React and Chargbee. I am looking for the project to be completed in the next week or less, so the developer must be available quickly and willing to hit the ground running. The developer should possess experience with both React and Chargbee, and be able to handle their integration with ease. If you are interested in this project, please contact me and we can discuss the specifics more in depth. Thank you in advance for your time!

    $12 / hr (Avg Bid)
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    34 bud

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