React.js is an efficient, declarative, and flexible open-source JavaScript library that is useful for developing user interfaces specially for single page apps. With React.js, users can build complex user interfaces from “components.” Components are small and isolated pieces of code.

React.js can also be used as a base in the building of both mobile and single-page apps. Although, complex React.js apps usually require additional libraries for interaction, routing, and state management with an API (Application programming interface).

React.js makes it possible for developers to design large web apps which can change data, without reloading the page.

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    183 trabajados encontrados, precios en USD

    Se requiere crear un módulo de chat multiagente que gestione las conversaciones de whatsapp y Facebook en una aplicación existente. Debe proponerse arquitectura que soporte altas demandas de trabajo con miles de usuario y sin intermitencias en el servicio Ya la aplicación tiene el módulo administrativo para crear los agentes, solo debe encargarse de la parte del chat. (Se usarán las API oficiales de mensajería de Facebok y Whatsaap) Debe desarrollar: - Listado de conversaciones por asignar por Canal (Facebook/Whatsapp) - listado de chats por agente - asignación de chat a otro agente -notificar en pantalla que hay nueva conversación y que se le asignó un usuario - cambios de estado del chat (abierto, pendiente, cerrado, etc) ...

    $516 (Avg Bid)
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    15 ofertas

    Empresa de tecnología con sede en Panamá, estamos en la fase de contratación de programadores front-end con conocimiento en Javascript y CSS. Se requiere que el programador tenga algunos conocimientos: - Conocimiento en Javascript y CSS - Preferiblemente tenga conocimiento en o React.js - Conocimiento básicos en TailwindCSS - Conocimiento en Redux - GitHub - Utilizar herramientas de seguimientos - Trabajo en equipo - Disponibilidad de tiempo - Dominar el idioma español

    $36 / hr (Avg Bid)
    $36 / hr Oferta promedio
    45 ofertas

    busco programador react para arreglar algunas cosas de una app web que tenemos. Es necesario que sea en React

    $7 / hr (Avg Bid)
    $7 / hr Oferta promedio
    40 ofertas

    Empresa de tecnología con sede en Panamá, estamos en la fase de contratación de programadores front-end con conocimiento en Javascript y CSS. Se requiere que el programador tenga algunos conocimientos: - Conocimiento en Javascript y CSS - Preferiblemente tenga conocimiento en o React.js - Conocimiento básicos en TailwindCSS - Conocimiento en Redux - GitHub - Utilizar herramientas de seguimientos - Trabajo en equipo - Disponibilidad de tiempo - Dominar el idioma español

    $1115 (Avg Bid)
    $1115 Oferta promedio
    67 ofertas

    Hay algunas cosas que necesito urgente corregir si se puede, La tienda está en wordpress con el tema Astra versión gratuita y el Divi builder, he colocado un tema hijo de astra anteriormente pero si lo desactivo los cambios realizados no se van, asi que no se si lo instale en vano. Acabo de seguir el paso a paso de un tutorial del canal de you tube, "Personalizar página de carrito con divi" Mi idea era editar un carrito que muestre el progreso de compra para que sea más fácil y que se eliminen los pasos de mas, o sea que tenga los mínimos pasos para que la compra sea facil. Después de editar los módulos de WooCommerce en la página carrito, veo elementos de advertencia con en el inspector de código, Veo un ...

    $31 (Avg Bid)
    $31 Oferta promedio
    9 ofertas

    Its a very small and quick job, unfortunately its taking me a few hours to figure it out already and i lost enough time. Its a simple change of background color of a react website in the control panel and on the public facing site. The background or theme color is green and i want to change it to white or dark gray. thats it. below is the image of the website for review. I have access to the control panel from my local only, you would have to connect with anydesk or some other remote pc type of software. any questions just chat me.

    $11 (Avg Bid)
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    17 ofertas

    We need a REAL responsible independent modern frontend developer accompanied by a cool attitude that has great English and is available to start immediately. Ecommerce Frontend Developer, required experience with Magento 2 ecommerce and Figma. The job to improve production Magento 2 frontend systems for UX/UI working closely with designers to deliver outstanding results, using an array of modern frontend technologies. Robotic frontend coders, need not APPLY. How to Apply - Start your application with "This is why I am the best frontend dev you will find". - Post your computer specifications in your reply. Thanks for your time

    $19 / hr (Avg Bid)
    $19 / hr Oferta promedio
    8 ofertas

    We want to develop a project in Asp.Net MVC with SQL server database. This project will include Login Page, Registration Page, Employee and Admin Portal

    $207 (Avg Bid)
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    3 ofertas

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    I already have a blockchain project now. but this have 3 bugs, so I need talented developer. This is made with react. So the developer need to know well in react, web3 integration. If you are interested, please bid with "web3 integration" on topline. After select the freelancer, I will share more details.

    $30 - $250
    Sellado
    $30 - $250
    19 ofertas

    i have a multi step form, and i want you to create a backend that stores data from that form and stores in mongodb. its as simple as that.

    $13 (Avg Bid)
    $13 Oferta promedio
    14 ofertas

    Danapay company is financial company for west Africa country and France... Our country needs one front-End engineer. This is simple test task! 1. In a new public github repo, create a front-end react / nextjs / typescript app with a mock user [table in Matine]() (3 rows X 4 columns). Fill it with some mock data. The table should take up the width of the window. 2. In the last column, place a variable number of div elements that contain short bits of text — i.e. their size of each div is determined by the length of the text, as see below: ![Untitled]() 1. If there is not enough space (i.e. the window / table gets smaller), collapse these documents into a single button that says “Documents” with a “chevron” icon on the right. Clicking on this button opens ...

    $10 - $30
    $10 - $30
    0 ofertas

    Build a website to compare booking offers and redirect user to the best offer ( like )

    $475 (Avg Bid)
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    44 ofertas

    Looking for react/redux developer with Laravel experince on montly basis.

    $707 (Avg Bid)
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    17 ofertas
    React Development 6 días left

    We are looking for a Developer to finish our React application for the long-term. We already have a fully functional web socket server and a functional react application with a state-of-the-art infrastructure from experienced developers. The project is currently in a stage where we implement well-defined designs from Adobe XD into the application and fix the latest bugs before a beta release. Required Experience: TypeScript - Solid understanding of JavaScript and Typescript - You are confident in handling data in JSON format - Knowledge of writing WebSocket client applications (WebSocket API) React - Solid knowledge of React, TSX and Hooks - SASS/SCSS, CSS-in-JS or Styled Components (Translating UI/UX design wireframes from Adobe XD to code) Frontend Development - Knowledge of JavaSc...

    $33 / hr (Avg Bid)
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    I want build What's App Web Robotics API Panel, From there user can scan What's App Web QR and activate there what's app robotics web API. And use of those api what's app msg. Should be send.

    $620 (Avg Bid)
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    12 ofertas

    Need a React Developer to design of Particular panels. If you are interested and available to then apply.

    $2 / hr (Avg Bid)
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    22 ofertas

    This project is based on java, spring boot, JWT authentication, and react js. Need a small application for managing real estate.

    $68 (Avg Bid)
    $68 Oferta promedio
    7 ofertas

    Hello, Everyone I am looking for senior MERN Developer. Please make proposal if you have enough experience there. Don't waste time if not experienced. This is 6+ months long term position. And you must pass the test during 2 hours.

    $51 / hr (Avg Bid)
    $51 / hr Oferta promedio
    45 ofertas

    Need someone to develop Question paper Generator which will generate question papers by fetching questions from db based on the number of marks selected. It will have user login, sign up, 2 factor authentication, payment gateway. Need someone to develop this project in Angular/React and Dot net/Node js. Please contact me, if this technology criteria is fulfilled

    $719 (Avg Bid)
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    18 ofertas

    I have a React Native App (IOS and Android) with React Backend. I need a Professional React UX/UI Designer to improve the look and feel of the Admin Backend. You must be able to work with the current App Developer to integrate the codes seamlessly without changing the Apps. Please see samples of the kind of UI and Layout we need here:

    $2541 (Avg Bid)
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    55 ofertas
    Build A website 6 días left

    create a website with high responsibility with a simple design untill medium design.

    $563 (Avg Bid)
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    153 ofertas

    react native developer needed for application development person should know each and every step from scratch to put live

    $5 / hr (Avg Bid)
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    20 ofertas

    We are looking for senior react and gsap and developer who can handle the project related with them. We want to redesign the site. The backend is already done and we hosted the website. If you are interested in this project, please share your experience and projects. Please write "I am human" on your proposal. You should be ready to begin. Good conversation and English. Thank you

    $15 / hr (Avg Bid)
    $15 / hr Oferta promedio
    9 ofertas

    Hi, We are looking for someone Front end developer. Must have a strong knowledge of React, Vue, Bootstrap, HTML/CSS, JavaScript and TypeScript. We will pay $100 ~ $500 per month. This task is Long Term project Thanks.

    $397 (Avg Bid)
    $397 Oferta promedio
    78 ofertas
    Looking Full Stack Developer 5 días left
    VERIFICADO

    Hello, I'm looking for full-time resources with the following skils: location: Work from home. Open positions: 1 to 4 years of experience Skills: React.js, TypeScript, NOde.js, PHP, CI, and Laravel Who is ready to work in the EST time zone. Thanks

    $417 (Avg Bid)
    $417 Oferta promedio
    21 ofertas
    Ovulation & Period Tracker 5 días left
    VERIFICADO

    I need to build web version of following mobile app. but no need chat and video courses. another example is need to finish this job in a week. User data should be encrypted on database so that nobody can read it. I think following is a good example for content encryption. as you can see from the example apps, database/backend will be simple. You may reuse your favorite open source if you can find it. I prefer react.js or angular based on mongo db or firebase, but PHP/Msql is also good if you can finish it perfectly on quality and security. Budget is $400~$500, if you can finish quickly with good quality, I will pay bonus. you shouldn't share source code once project is completed. NDA sign is required.

    $499 (Avg Bid)
    $499 Oferta promedio
    54 ofertas
    React + Node Expert -- 3 5 días left
    VERIFICADO

    Hey, This is my concern about login Currently, in the project the user logs in with it's username and password, it gets an access token only. When the access token expires the user is not authorized anymore. In the task I want to have a refresh token, which will be stored in the cookies. When user loggs in, it gets the Access token and the refresh token. When the access token expires the client side sends a request (with the refresh token in the cookies) for a new "access token". If the refresh token is valid the server responds with a new access token and a new refresh token. - type vfrewq before your praposal then after I'll check your praposal Thanks

    $29 (Avg Bid)
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    17 ofertas

    Need to create a website on aws using react. Objective: 1. Upload video to s3 bucket and save reference in database. 2. Able to create different zones and assign saved videos to these zones. 3. Api should be available to get the list of videos and it's data like size and language according to the zones. 4. Api should be available to download specific video as per the list. 5. API should be deployed using lambda services. 6. API should have authentication by cognito. 7. (optional) Any video player react app, that download and play the video from the list obtained from API. Developer should be able to use own aws account, which can be later configured with my account. or should be able to let me know the steps so I can provide the necessary access to them. Timeline: 10-15 ...

    $535 (Avg Bid)
    $535 Oferta promedio
    9 ofertas

    Your job will include below tasks for the project and to ensure completion. Review the existing azure ad setup as per the business requirement. We have used php library called "SimpleSAMLphp" for integration with azure ad to our web application. We authenticate Microsoft email and password and get response from Microsoft. In this process we have to put email and password in the Microsoft screen and then the integration has started. Our requirement is to create an URL (Application URL) where we should embed the Microsoft email and password and it will integrate with Azure AD and after successful authentication, response should come accordingly. We do not want any Microsoft screen where we need to put email and password. Also we need some token or session parameter by which we ...

    $538 (Avg Bid)
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    39 ofertas

    Hi, we are looking for an app that has the same format, design, css,etc as the web app Zillow, must be in React, Firebase and responsive design, must has the login, filters areas, etc.

    $399 (Avg Bid)
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    43 ofertas

    It is a beauty parlour management system, having 9 modules. We want this to manage our multiple branches so that we can manage our employees, investors, marketing persons and customers. We want a web application using reactjs, nodejs and mongo db that can work on mobile phones, desktop and laptop. It can save data locally when no internet connection and later can save data in database when internet connection is good. Description of 9 modules- Super Admin - Person appointed to manage complete business. Admin - Person appointed to manage multiple branches. Branch Manager - Person appointed to manage a branch. Beautician - Person appointed in a particular branch. Trainee - Person takes training in a particular branch. Customer - Person visits any branch to take services like haircut, facia...

    $351 (Avg Bid)
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    13 ofertas

    Hi, Freelancers! I am new to Freelancer.com. I think I will be able to look for a real React.js master here. Only American Developer is needed! Thank you, guys.

    $46 / hr (Avg Bid)
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    50 ofertas

    Client looking for coin listing website like as client reference - Listing of cryptos - Search engine with filters such as volume, kyc, market cap, percentage change. Access to the platform will be free with limited functionality. You have an example with which gives limited free access. Access to the platform must be possible for investors holding a certain number of tokens if they do not have tokens that have limited features and to use more features they need to buy a subscription. Below you will find the answers to your questions: 1. How many blockchains should you use? For example, see the image below. To start with, it is best to integrate the following blockchains: NBB Smart Chain, Ethereum, Cronos, Solana, Avalanche and Polygon. 2. What type of wallet integration is needed to do ...

    $250 - $750
    Sellado
    $250 - $750
    30 ofertas

    This project is for advert Site. 30$/hourly

    $467 (Avg Bid)
    $467 Oferta promedio
    128 ofertas

    At least 3 full months of work in which the completion of the development of the Marketplace website, the addition of additional features, bug fixes, tests and completion of the website, and preparation for launch. Maintenance, testing, bug fixes, and adding features to the Ecommerce Marketplace website.

    $850 (Avg Bid)
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    105 ofertas
    Ajax senior dev 5 días left
    VERIFICADO

    Hello, in way to improve our actual script, we looking for an senior ajax developer for put some ajax code in our script for improve speed and have all in one page. We can hire you right now and you need to start now too. You need to know Ajax and , is important. Job is about 10h - 15h Thx you

    $32 / hr (Avg Bid)
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    50 ofertas

    Hey Guys, I'm Looking for a web based portal for students, Coding Practice and Assessment Platform with Leader board as the major module, Plagiarism checking of Code Submissions and few other as mentioned in the attachment.

    $1868 (Avg Bid)
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    26 ofertas

    Need help who are expert in react and tailwind css, want some small small modifications in styling. Small task . Only come if you are experts in that

    $13 (Avg Bid)
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    22 ofertas
    Blockchain - Fork NFT Lending Site 5 días left
    VERIFICADO

    Project: NFT Lending Site Fork READ FIRST BEFORE BIDDING!!! Please read the entire project description. We will not entertain low bids that are used to kick off conversations and negotiations to increase the price in the project. Please bid on the entire project, and take into consideration your bid price that could focus on profitability for you while staying competitive against other bidders. Also, note that we will be using milestones, and expectations for this project. Bidding: Please bid the total cost of the project, and the timeframe. Also, please take your bid and add 10-15% to the project to allow for a buffer of odds and ends. Project Summary: We are looking to fork a specific crypto project. DM me, and I will share with you the exact project name, website, and smart cont...

    $1703 (Avg Bid)
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    70 ofertas

    Need ReactJS, Firebase/MongoDB, ReactNative App development to develop an App. I prefer developer/group from Bangalore/Chennai.

    $713 (Avg Bid)
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    10 ofertas

    We have a application where we need to view the ppsx file in browser. Application is a react app. I need help in fixing this issue.

    $26 (Avg Bid)
    $26 Oferta promedio
    7 ofertas

    Hi, i'm looking create an online Event Venue Searcher and Booking. Even types include but not limited to: Corporate gatherings, Parties, Weddings, Photography/Video production project Venue types can be: Restaurants, Bars, Production Studio, Commercial Space The site should have a basic functionality good enough for a demo and/POC. Basic features would include: - Browse venues by location, event type date -map point search - venue reservation, request to reserve and request acceptance by host - payment simulation -email/sms notification to user - calendar blocked as venue availability - offline chat guest and host we expect full implementation however we will be doing the architecture, we will provide the datamodel as well, the layers of the site will be: UI: React Web API: Pyt...

    $4239 (Avg Bid)
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    83 ofertas
    Optimizing frontend 4 días left
    VERIFICADO

    I have a frontend developed using reactjs nextjs and nodejs . I would like to optimize that for better performance. When you bid the project please share your experience with frontend performance optimization.

    $169 (Avg Bid)
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    72 ofertas

    Need a website built on no-code app /form builder platforms that will be self hosted. The platform has to be based on react or angular. Back end is SQL server database and API needs to be built on ASP.net core. Chosen no-code app builder needs to be able to support multi tenancy, single page, single sign on and multi role user authentication/authorization. Developer should be able to code custom HTML controls for form builders Only bid if you have done such thing in the past and have a demo to show your work

    $8269 (Avg Bid)
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    22 ofertas

    Hello, Everyone React, Node, MongoDB developers

    $610 (Avg Bid)
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    93 ofertas

    We need 2 Senior Full Stack Developers in one team: Must have experience in both skills; 1) .net core on backend - min 4 years of experience 2) ReactJs OR React Native on frontend - min 2 years or experience.

    $48 / hr (Avg Bid)
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    Hi. I am looking for full experienced react developer for fixing my NFT Game UI. If you have full experience in refining UI responsive of existing FE, please apply. This is my game. Thanks.

    $882 (Avg Bid)
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    29 ofertas

    I only need a base of the website. For example: -- (1st domain name with .in extension) -- (2nd domain name with .it extension) I need two sites with differences in domain extension. First, we need to check what hostname we hit on the internet using "Next JS Middleware". After that, it will only return that site API. And that API JSON data we need to store in session. After that I only want one component to be rendered in the front end with the data stored in JSON format in session.

    $218 (Avg Bid)
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    3 ofertas

    Looking for an experienced frontend developer for a 1-2-week project. We are developing a website which aims at searching for medical infomation within a given database. Our frontend is very trivial now and need to be polished. We hope you are experienced with JavaScript, React and UI design. The requirements of the website pages: 1. A main page looks like a searching engine. 2. The result display of the searching engine. It would be document and some annotation reaults. We will provide the ideal outcome examples and the code of the current demo.

    $500 (Avg Bid)
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    107 ofertas

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