JavaScript Jobs
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!
De 691,977 opiniones, los clientes califican nuestro Javascript Developers 4.86 de un total de 5 estrellas.Contratar a Javascript Developers
Mejorar y finalizar un MVP the una plataforma web hecha en ReactJs, usa API simples
DAO con el estándar ERC721 Votes que me permite usar como poder de voto los NFTs de una colección. ¿Qué necesito? - Contratos en solidity que conforman la DAO (No necesito el contrato del NFT, porque este ya está creado, solo necesito poder usarlo en dicha DAO mediante una variable que sea _token y que se inyecte al desplegar el contrato en la red de Polygon) - Necesito los métodos públicos para interactuar con dicho contrato en javascript (mi app está escrita en React) con una pequeña descripción de los parámetros de entrada de dichas funciones.
Título del proyecto: "Página principal de una EdTech - Desarrollo en ReactJS y TailwindCSS" Descripción: Buscamos un talentoso desarrollador frontend para crear la página principal de nuestro innovador proyecto EdTech. El objetivo es diseñar una interfaz atractiva y funcional que atraiga y retenga a los usuarios. La página debe ser mobile responsive y estar desarrollada utilizando ReactJS y TailwindCSS, siguiendo las mejores prácticas y estándares de la industria. Requisitos del proyecto: Diseño visualmente atractivo e intuitivo Desarrollo utilizando ReactJS y TailwindCSS Implementación de mobile responsive design Optimización de carga y rendimiento Entrega en un plazo de 2 semanas Por favor, incluya...
TENGO COMO PROYECTO DE UNIVERSIDAD DIGITALIZAR UNAS GRAFICAS UTILIZANDO CHARTJS, del crecimiento de los niños
Necesito un experto en WordPress que pueda ayudarme a crear un formulario de selección de automóviles para mi sitio web. El formulario debe tener campos de selección para marca, modelo, versión y año, y debe mostrar u ocultar campos adicionales según las selecciones del usuario (campos condicionales). Además, necesito que el formulario capture datos de contacto de la persona que llegue a mi landing page, como por ejemplo nombre, apellido, email y teléfono. La base de datos de los automóviles está almacenada en Google Sheets y contiene más de 500,000 variables, por lo que hay que tener en cuenta el procesamiento y la carga. Busco a alguien que tenga experiencia en la creación de formularios complejos utiliz...
Se requiere desarrollar un módulo Desarrollar un módulo para MercadoLibre para el monitoreo y gestión de las devoluciones y reclamos generados en MercadoLibre a través de consultas en la API de MercadoLibre. El código desarrollado (backend) lo integraremos a una herramienta (frontend) que ya tenemos. A) Devoluciones Requerimos tener un apartado (pestaña) para poder monitorear y dar seguimiento a los productos que estarán siendo devueltos. En donde nos muestre: - Número de venta. - Usuario (comprador). - SKU del producto. - Titulo de Producto. - Estado de la devolución. - Fecha de la devolución. - Motivo de la devolución. De esta manera podemos monitorear y estaremos al tanto de la devolución. B) Re...
Estamos buscando un programador backend con experiencia en PHP y JavaScript para un proyecto específico en nuestra tienda de regalos personalizados. Si la colaboración es exitosa, existe la posibilidad de trabajar juntos a largo plazo. El objetivo del proyecto es desarrollar un constructor de muñecos/personajes en tiempo real, similar a este ejemplo: El software resultante deberá integrarse en nuestro sitio web de WordPress. Requisitos: Experiencia en desarrollo backend con PHP y JavaScript Conocimientos en integración de soluciones personalizadas en WordPress Familiaridad con tecnologías frontend (HTML, CSS) es un plus Experiencia en el desarrollo de aplicaciones interactivas y en tiempo real Capacidad para trabajar de forma autónoma y ...
Terminar la versión desktop y mobile de un sitio web de 15 páginas. Es un sitio informativo, con pocas animaciones , deberá ser responsivo. Sitio hecho en Bootstrap5 Debe estar hecho en php, html5, js y css3,
Crear aplicación Web/Móviles para el mercado latinoamericano, trabajando en un horario de lunes a viernes de 8am a 5pm, vacaciones pagadas, e incentivos por buen desempeño. Se requiere que tenga experiencia creando API, WebService, y buen desempeño utilizando PHP, React, JavaScript para el BackEnd. Debe tener creatividad para diseño de FrontEnd, de preferencia HTML y CSS. Opcional manejar Flutter y conocimientos de Angular. Importante que tenga experiencia con el manejo de SQL Server y conocimientos medios de PostgreSQL.
El archivo adjunto contiene la información general del proyecto planteado. Quiero cotizar el precio del desarrollo de todo el proyecto, junto con un aproximado de cuánto se demoraría en desarrollar.
Desarrollador fullstack experto en Drupal 7 y PHP
Necesito implementar algunas opciones para Singular Live
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...
Tengo contratado un servicio de API desde la cual extraigo datos para un servicio de Coach hacia mi web en Wordpress, necesito un programador especialista que me explique su funcionamiento y creación de algunos shortcodes para su llamada de información especifica y que se vea reflejada en mi web.
sera una aplicacion PWA en Angular con ASP.NET.6 con login, pantalla de embarques pendientes,pantalla tracking donde el conductor enviara los eventos, pantalla donde se iran agregando fotos de prueba y firmas requeridas en cada envio de embarque, me gustaria una cotizacion.
Necesito mejorar la velocidad de carga de vivereinalgarve.com.
Solución de error en un proyecto realizado en y laravel, error al dar de alta un item por soap en otro servicio
Solución de error en un proyecto realizado en framework, error al dar de alta un item por soap en otro servicio
Necesito un desarrollar de habla Hispana el punto clave. Bueno estamos buscando un desarrollador con mucha experiencia con la tegnologias mencionadas en el titulo. Somos una Start up que estamos por lanzo un proyecto sumamente grande donde hay uso de Web app, mobile app y tablet app. Todo eso manejado desde una central o web office. Por eso el candidato tendre que tener experiencia en el uso de estructura de datos, manejos de API's, base de datos y todo lo que conlleva a programacion orientada a objetos. Estamos en nuestra primera fase del proyecto a punto de lanzarlo, y es por eso que unicamente buscamos una persona que nos ayude a correigir ciertos errores y cambios que hay que hacer en el software. Si todo sale bien, el desarrollador tendra una muy buena propuesta de ser part...
Hola, para iniciar por favor escribe la respuesta de la pregunta al inicio de tu oferta. ¿Cuál es el número de el chavo? Estoy buscando una persona proactiva con experiencia en programación y WHM para trabajar en diferentes proyectos con la posibilidad de establecer un equipo para ofrecer otros servicios relacionados con el área. El postulante debe saber trabajar bajo ambiente Windows o Mac El puesto de trabajo es presencial con facilidades en el horario. El precio de la oferta es en base un mes de trabajo. Si la persona es diseñador gráfico o sabe algunos programas de diseño, es un plus. Nuevos en la plataforma de freelancer son bienvenidos. Buena Suerte!
Necesito programador que me pueda ayudar a terminar rapido una aplicacion de react native, cuento con trabajo continuo si se logra una relacion laboral exitosa.
We are looking for HTML, React JS and Angular JS developer to integrate around 36 API's into our portal. workhrs 60Hrs / 10 days
Looking for a developer to add gamification to our website waitlist. Description: After users sign up with their email on our website, a new page opens up to encourage them to refer their friends and move up the waitlist and get priority access. (Images included) -For referring each friend, they earn 3 points. Key Responsibilities: Develop and implement a waitlist system that allows users to earn points by referring friends. Design and create the waitlist page and referral system, including the ability to track and assign points to users who successfully refer their friends. Create an admin dashboard to monitor and manage the waitlist, including the ability to view user referrals, points, and access levels. Ensure the waitlist system is easy to use and mobile-friendly, with clear instructi...
For corporate trainings : Build a website (Dynamic website) Similar like site. SEO and hosting also should be done I will provide logo which is already available with us. Our dedicated team also help you in content writing for all pages.
To create a new component product comparison table using Next JS, Typescript, React Js, AEM with responsiveness in mobile and desktop design
I have a requirement for a tool that verifies patients insurance eligibility status and displays the plan in a dashboard. API available and will be provided for tool development. Reference: Zubb insurance verification tool
Configure the default contact Webform Submission View to filter between a date range Requirements: - 1 - Default Drupal latest 9 or 10 version Instance - 2 - Add Date Element to the default Contact Webform - 3 - Configure Views to Filter between dates from the data inputted into the Date Element Successful configuration displays the filter at /admin/structure/webform/manage/contact/results/submissions. Delivery Methods: - 1 - Export and send the relevant config file. - 2 - Configure remotely via AnyDesk access.
I am looking for someone to create a 10 second demo video of a chrome extension for me. The animation should be in 2D, and you can use the screen recording for creating the video. The length of the demo video should be between 5-10 seconds. I'm looking for someone with experience in crafting professional and compelling videos. If you feel you have the skills necessary to accomplish this project, please get in touch!
Hello, I am looking for a skilled developer to help me develop a Forex Trading Expert Advisor (EA) that utilizes a Step Lot system to trade and not the usual Martingale. The chosen programmer must have a strong knowledge of programming languages such as C#, Java, Python, C++, JavaScript, or PHP. Also, the trading strategy to be incorporated in the EA will be provided. This EA will be for a live account, not just a demo account. If you are interested in this project and feel confident in your abilities to create an effective EA for a live account, please let me know. Thank you for your time and consideration.
I want a cell to display a certain image based on a formula for example if player A rushes for 100 yards or more display “image”. I’m creating a badge achievement system if there is anyway to achieve this that be great
We need to build the component as Aem component by using next Js, react and typescript and connect through mapping the props from the backend
I am looking for mearn stack developer to fix my mern project via anydesk. Will discuss further in pm. budget is 30Euro.
I am looking to hire a freelancer to create a website for an incorporated society. The purpose of the website is to be used as a platform to share information and news to the society members. I have a general idea of the aesthetic I’m looking for the website to have but I am open to any suggestions or ideas presented by the freelancer. As for content, I already have existing content that will be used on the website. I may also require additional content from the freelancer to populate the website. There will be a pay function where members will pay their subscription and then they will be asked to enter a username and password. Members will have access to other info which will be the 'Members only' section.
I'm looking to develop a Chrome Plugin that will automatically fill out forms from a watched folder. It will specifically support Google Chrome and be running on a Windows platform. The plugin should be capable of quickly and accurately filling out forms by accessing data stored in the watched folder. The watched folder will be specified beforehand, allowing the user to easily access valid data when filling out forms. This way, the user will not have to waste time manually inputting all data necessary to complete forms. The plugin should also be able to upload data to a cloud service for storage and make quick updates to certain fields from other specified sources. In order to provide a seamless user experience, a user-friendly interface should be developed that makes filling out form...
Hi there! I'm looking for someone to help me create an Adobe PDF script to batch extract multiple pages from pdf files. There should be 2 scripts. 1) To take the 1st page and the last page of the pdf file, and extract it into a folder called "front cover mockup". 2) To take the 2nd page and 3rd page of each pdf file, and extract it into a folder called "inside pages mockup". All the PDF files will be in subfolders. When you do the script output, you need to keep the same folder structure. But with the addition of creating the new folders. These will be car files. Example folder structure below: MANUFACTURER > MODEL > YEAR > 1. FRONT COVER MOCKUP 2. INSIDE PAGES MOCKUPS The filenames, should ideally contain the folder structure. So it's easy...
I am looking for a full-time freelance developer to help develop a FiveM server. This project will involve custom scripting and custom designing vehicles liveries/models.. I need the work to begin immediately. The ideal candidate would have experience in Lua, C#, javascript/custom scripting. The person should also have a good understanding of troubleshooting and problem-solving with FiveM server files. This position requires a dedicated, self-motivated individual who can work independently with minimal supervision. The candidate must have great communication skills and be capable of working under tight deadlines. If this sounds like you, please send me your portfolio and your best rate for this project. I look forward to hearing from you.
Hi there, I am looking for someone to help me fix a small issue on my WordPress website. The issue i am experiencing is related to a contact form that i have created using Contact Form 7. The form has conditional fields that are meant to display when certain fields are chosen. The issue is that the conditional fields are working correctly in one area of the page, but not in another area. I have inserted the contact form shortcode in both areas of the page, but the conditional fields are only working in one of them. Thanks
We are a company seeking a talented and experienced mobile app developer with expertise in Flutter and Google Maps to develop and maintain our driver tracking mobile app. Requirements: At least 2 years of experience in mobile app development Experience with Flutter is essential Expertise in implementing Google Maps in mobile apps Experience working with APIs in Json format Knowledge of Firebase database management Responsibilities: Collaborate with our team to develop and maintain our driver tracking mobile app using Flutter and Google Maps Integrate the app with Firebase for real-time driver tracking and updates Work with APIs in Json format to retrieve and send data between the mobile app and our servers Qualifications: Proven experience as a Mobile App Developer Strong experience wi...
i need reactjs expert who can setup my code on ubuntu server
its a 2d platformer I'm working on and I cant figure out what I'm doing wrong <!DOCTYPE html> <html> <head> <title>Platformer Game</title> <link rel="stylesheet" type="text/css" href="" /> </head> <body> <canvas id="canvas" width="640" height="480"></canvas> <script src=""></script> </body> </html> canvas { border: 1px solid black; } // Initialize variables var canvas = ("canvas"); var ctx = ("2d"); var player = { x: 50, y: 380, width: 32, height: 32, speed: 5, velX: 0, velY: 0, jumping: false }; var keys = []; var friction = 0.8; var gravity = 0.2; // Set up key ...
Preciso de um desenvolvedor/programador, para construir um script que automatiza clicks dentro de uma url, eu preciso seguir uma quantidade especifica de pessoas no dia e para fazer isso preciso configurar um comando/script dentro de uma ferramenta/extensão que uso o AutoClick , preciso que esta ferramenta clique em botões especificos dentro da url, mais pra ela funcionar tenho que saber quais elementos, atributos dos botões ela deve clicar. Sem habilidades de um desenvolvedor/programador não consigo configurar, acredito que para configurar não vai ser tão dificil, e sabendo o básico já conseguimos resolver isso!
We are looking for an experienced React engineer to join our music startup team. Our platform aims to revolutionize the way people interact with music, and we need an engineer who is passionate about music and has the technical skills to help us make it happen. Responsibilities: Work with our product and design teams to develop and maintain our web application using React, Redux, and other relevant technologies Write clean, efficient, and well-documented code that adheres to industry best practices Collaborate with other engineers to ensure our application is scalable, reliable, and performant Continuously optimize and improve the user experience by implementing new features and fixing bugs Participate in code reviews and contribute to our engineering standards and practices Requirements...
Looking for a live voting script writing In PHP and MySQL. Page to add the question and options. Page for the audience to vote with a count down Timer when voting stops Page to display the live results that refreshes. With a bar showing the % for each option.
we have a game that we found some people use programs like auto clickers ,or js apps on there desktop to cheat we need to prevent this acton without use captcha ! any ideas ?
I am looking for a freelancer to create a website that will monitor other sites to check if they are up or down. The type of monitoring that I need is Uptime, which will include reporting on downtime and availability of the website. For this project, I am looking for anyone who has experience with similar tasks, as well as applicants who have detailed project proposals. The frequency of the monitoring should be determined by the freelancer and will be based on the best practices for this task. The goal is to create a website that can easily tell users if other websites are up or down, so the quality of the monitoring should be accurate and up to date. The successful freelancer must be organized and able to deliver a high quality website with successful monitoring. If you feel you have t...
I am filling out a Freelancer task for creating a WhatsApp Automation Tool (Web App(Preferred) or Chrome Extension). My expected use for the tool will be Maybe - meaning it may require integration with other software, or it may not. I anticipate needing this tool implemented within 2 - 4 weeks. I am looking for experienced professionals to build this tool, as well as ensure that it functions properly. It needs to be user-friendly and highly efficient. If you believe that you have the required experience and skill set, I invite you to apply. Logic Flow: 1- User Registration 2- The app will generate a QR code to allow users to sign in to his WhatsApp account. (This login must be saved, so users don't have to login every time they use the tool). 3- The user will create an audience grou...
I have a app that needs a CRUD API. I want to be able to create, update, duplicate, delete, and view a brief (category) and topic (post). Each brief will have briefUrl, briefTags, briefTitle, briefDetail, briefSummary, and briefPostedAt. Also, each topic will have topicUrl, topicTags, topicTitle, topicDetail, topicSummary, topicPostedAt, and topicBriefId. The URL field will be small caps separated by (-), the tag field will be separated by a comma (saved as an array), and the detail field will be a markdown editor. Here's the doc ~ Here’s the demo video ~
HELLO, I WANT A WEB PAGE FOR SELLERS AND AFFILIATES, EXAMPLE (COD NETWROK)
Description: First when you are logged in, you must fill out values in given forms - name, count, fileupload, price and description. If you press button "release", page is redirected lists management page. Here have to be displayed the options you insert in a row, and you can edit and delete this values. This page must be filtered by every options and have to be routed page. I would like to discuss with suitable developer about more details.
My project, Manoucha 0, requires development using JavaScript to build a secure application for mobile devices. The project will involve creating and implementing features related to security, such as authentication and authorization. Additionally, there is need for backend database integration in order to provide a high level of functionality on the mobile device. User interface design will also be an important factor for a successful integration of all the application pieces. Ultimately, I am looking for a freelancer who is experienced in leveraging JavaScript to create a secure, functional, and intuitive application for mobile devices.