What Is JavaScript? JavaScript is a scripting language used to enable programmatic access to objects within software applications. JavaScript will make your website more interactive, allowing your users input information, move elements around on the page, and make your website more functional.

If you are a JavaScript guru, can finish tasks with high level standards and in a timeless manner, then this is the right place for you! Freelancer.com supplies JavaScript freelancers with thousands of projects, having clients from all over the world looking for having their job done professionally and settling for nothing but the best. Jobs vary from building a dynamic web & desktop applications to fixing errors and malfunctions with Scripts. Those clients are looking for someone like you to get the job done. If you believe you can do that, then start bidding on JavaScript project and get paid with an average of $200 per project!

From 806598 reviews, clients rate our Javascript Developers 4.85 out of 5 stars.
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    Looking for developer who can work on react-stripe project

    €31 - €255
    €31 - €255
    0 nabídky

    Decision Phobia Terminator Web Application: Press the button and randomly choose the food pics. Budget is $80

    €64 (Avg Bid)
    €64 Průměr. nabídka
    17 nabídky
    Computer12 6 dní left
    OVĚŘENÉ

    need help setting up some problem with computer graphic! Java expert

    €22 (Avg Bid)
    €22 Průměr. nabídka
    8 nabídky

    To increase page speed for the current React project, we are looking for React developers. Have you ever dealt with it? I am ready to hire the right candidate immediately.

    €14 / hr (Avg Bid)
    €14 / hr Průměr. nabídka
    52 nabídky

    I need you to build a simple chrome extension that will import a file from the local directory of choice and output the contents of that file inside the extension. Important note: The user will not have to interact with the filesystem and should not be asked to select the file.

    €13 (Avg Bid)
    €13 Průměr. nabídka
    2 nabídky

    Need applet expert I have error in apdu plz see this pic my error is 6f00 after upload information in my app i have 6982 error

    €103 (Avg Bid)
    €103 Průměr. nabídka
    8 nabídky

    I want to build a simple front end connected to a backend JS application that allows me to be able to type in a radio show, podcast, streaming service address into a search bar. Once recorded, the application will then find, download, and then transcript the "show" into a JSON file for interpretation.

    €474 (Avg Bid)
    €474 Průměr. nabídka
    19 nabídky

    I want to build a simple front end connected to a backend JS application that allows me to be able to type in a radio show, podcast, streaming service address into a search bar. Once recorded, the application will then find, download, and then transcript the "show" into a JSON file for interpretation.

    €2115 (Avg Bid)
    €2115 Průměr. nabídka
    61 nabídky

    We have a webpage using Google Sign-In JavaScript to login/identify into an interface. 2 tasks to be done: 1. migrate from Google Sign-In JavaScript to the new Google Identity Services 2. Enhance: allow a list of registered users ie: email1, email2 3. enhance the security of the script by not having the API_KEY visible Script Extract: function initClient() { var API_KEY='xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx' var CLIENT_ID= ''; var SCOPE = ''; ({ 'apiKey': API_KEY, 'clientId': CLIENT_ID, 'scope': SCOPE, 'discoveryDocs': ['$discovery/rest?version=v4'], }).then(function() { ().(updateSignInStatus); updateSignInStatus(().()); }); } function handleClientLoad() { (...

    €115 (Avg Bid)
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    13 nabídky

    Help with react native project type"Coding chamber" to bid

    €169 (Avg Bid)
    €169 Průměr. nabídka
    36 nabídky

    Hey, We need to migrate our chrome extension to manifest v3.

    €175 (Avg Bid)
    €175 Průměr. nabídka
    20 nabídky

    An easy and clean website like this one. The point with the whole website is to add affiliate links to different betting sites so when they click on "Casinobonusar" which is "Casino bonuses" They come to this page where they have multiple different websites to click on and thenn register on the website (I will provide you with all affiliate links) Speltips is betting tips where I post a prediction and at the same time explain why I want to choose this prediction like here Can be good that random affiliate links are visible there like this one check the link.

    €444 (Avg Bid)
    €444 Průměr. nabídka
    59 nabídky

    I am using Search & Filter to arrive at a narrowed-down list of products. It returns on a URL with parameters What I want is for those parameters to be appended to a Beaver Builder post content grid module that appears on that page so that any product they click will carry through the parameters to the product single page. So any link that appears in the post grid module will have the appended parameters affixed to it.

    €43 (Avg Bid)
    €43 Průměr. nabídka
    15 nabídky

    Create me a website that has a user login page (with access being granted by admin) - then a user dashboard, where users can build their own profile and upload documents admin can control the workflow off all steps

    €475 (Avg Bid)
    €475 Průměr. nabídka
    93 nabídky

    Hello, I am looking to add another developer to my team. Do you know Javascript well? Can you work daily with me from say 6 or 7am to roughly 6pm EST daily? Send me a message now and give me your best rate for a full time position.

    €9 / hr (Avg Bid)
    €9 / hr Průměr. nabídka
    37 nabídky

    i want a script for yahoo reporting bulk email reporting

    €151 (Avg Bid)
    €151 Průměr. nabídka
    22 nabídky

    Build me a saas version of a websit.

    €566 (Avg Bid)
    €566 Průměr. nabídka
    88 nabídky

    Hello I want to run A react and java made webapp in my local system You have to run it through teamviewer etc bid if interested these are the codes:

    €17 (Avg Bid)
    €17 Průměr. nabídka
    4 nabídky

    We need to develop both a browser extension and an office add-in using javascript. The browser extension should work in Chrome,Edge,Safari,Firefox In any edit box in the browser (text input, text area, Gmail, Google doc, and wordpress editor, etc.), when the user selects a sentence (or uses the shortcut key Ctrl + E to automatically select the current sentence), a popup window appears with a list of texts (the content of the list is obtained through our API). The user selects one from the list, and it will replace the text in the original text. Similar function for office add-in (Word and outlook) Requirements: 1. Use javascript for both browser extension and office add-in. 2. Use plain javascript (no framworks or external library) 3. The browser extension should work for an...

    €494 (Avg Bid)
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    51 nabídky

    Description: Connect Mercadolibre APIs with AmoCRM to answer the questions they ask in Mercadolibre publications, in amoCRM as a lead. Here I leave documentation of the two api and also an explanatory video Explanatory video:

    €523 (Avg Bid)
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    22 nabídky

    I need a developper to make a website to our private school

    €178 (Avg Bid)
    €178 Průměr. nabídka
    89 nabídky
    DICOM - Medical Imaging - PACS 6 dní left
    OVĚŘENÉ

    Do you have experience with Medical imaging, DICOM files and PACS. Our server less application needs improvement (React/Node.JS).

    €8 / hr (Avg Bid)
    €8 / hr Průměr. nabídka
    21 nabídky
    Build me a web app 6 dní left
    OVĚŘENÉ

    DEADLINE is 9th October We need a simple web application for clinical trial staff to be able to observe the outcomes of trials of different treatment techniques or prescriptions in the hospital. The aim is to find the best way to diagnose, prevent, or treat diseases. The web app must be able to record any “SIMPLE” observation gathered during studies Requirements We don't need any fancy web design, just a VERY SIMPLE DESIGN (Don't waste your time on web design) ! The web app will be very simple since this will be only used only for PROTOTYPES ! Must be uploaded on GITHUB (so we are able to track your work)

    €20 / hr (Avg Bid)
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    120 nabídky

    I have a funnel that I'd like to be built and designed for me. I have the copy prepared, you can review it before you give a final bid on the project. My business is a SaaS company. The current landing page is , we'll use similar branding but a different name for the offer.

    €509 (Avg Bid)
    €509 Průměr. nabídka
    57 nabídky
    API surbet Betburger 6 dní left
    OVĚŘENÉ

    Hello, I am interested in your proposal. You have already programmed an API to use SURBETS Have you offered by BetBURGER? Sincerely Have a good evening Marcel Vernay from France

    €15 / hr (Avg Bid)
    €15 / hr Průměr. nabídka
    15 nabídky

    Hi, I need someone who can rewrite chrome extension code and make it unique every time.

    €172 (Avg Bid)
    €172 Průměr. nabídka
    28 nabídky

    Necesito crear una funcion para consumir un servicio soap pero, estoy teniendo este error: Access to fetch at '' from origin 'http://localhost' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled. estoy cansado de buscar, y necesito que alguien me ayude a corregir esto.

    €24 (Avg Bid)
    €24 Průměr. nabídka
    12 nabídky

    VERY VERY IMPORTAN Instructions: 1. Please read the project specifications carefully. 2. Adjust your final offer according to what you consider you should charge for the development 3. In case of specific doubts, these will be resolved through the Freelancer chat 4. I will not answer things like tell me more about your project, tell me about your project, what is your project about 5. I will not answer questions such as what your budget is (after reviewing the information and answering any particular questions, please adjust your final offer) General objective of the project: Use facebook graphql to obtain information related to the friends of a personal Facebook profile (Picture, Fbid, Username, Name, Friend since, Reactions, Comments, Messages Gender, Conversations, Country, Is Active...

    €172 (Avg Bid)
    €172 Průměr. nabídka
    13 nabídky

    Necesito un desarrollador backend para integrar la api de A una plataforma chat multi agentes construida en ruby on rails Se debe integrar a la estructura de canales de comunicacion ya existente

    €166 (Avg Bid)
    €166 Průměr. nabídka
    11 nabídky

    Greetings! I have a Japanese project regarding to JavaScript. It is not from scratch. There is some source code. You need to implement some features to it. Provides: XD design, HTML/CSS code fileset. If you are interest, please apply!

    €151 (Avg Bid)
    €151 Průměr. nabídka
    11 nabídky

    Hello, we have a game concept. It's only half-ready now. We need to make changes to this concept and change some logic. Let's divide the work into several parts. The first task is below: Description: The game consists in trying to beat the opponent, and in case of a successful beat (the opponent does not guess the direction of your hit), you move on to the next stage. After 9 successful stages, you play against the goalkeeper, if you win, you win the jackpot. The game you can check here - Now: - The first nine (successful) steps you play against the player as if punching the ball through him. The problem is that it's not logical, and it's hard to draw the player's beat. We need: - Two players on your team will be behind the opponent (to the right and left). ...

    €535 (Avg Bid)
    €535 Průměr. nabídka
    22 nabídky
    Auto Data scrape 6 dní left

    Wanted somebody that could Scrap data from a website and automatically post to a facebook group. These are local emergency posts that I wanted to auto post to facebook. These alert happen every few mins.. . delcodispatch dot com. The website shows the data delay 10-15 mins, But real time data when you login. Your software or application needs to login with a google account.This. should probably be a desktop app

    €1174 (Avg Bid)
    €1174 Průměr. nabídka
    35 nabídky

    Hi everyone! My website is made in Webflow. There is a small bug on a small screen with animations that don't appear on the big screen. This job should be a quick fix.

    €413 (Avg Bid)
    €413 Průměr. nabídka
    65 nabídky
    Auto Data scrape 6 dní left

    Wanted somebody that could Scrap data from a website and automatically post to a facebook group. These are local emergency posts that I wanted to auto post to facebook. These alert happen every few mins.. . delcodispatch dot com. The website shows the data delay 10-15 mins, But real time data when you login. Your software or application needs to login with a google account.This. should probably be a desktop app

    €53 / hr (Avg Bid)
    €53 / hr Průměr. nabídka
    6 nabídky

    need a developer who can use tailwind css and make dashboard page (single page) as per reference

    €79 (Avg Bid)
    €79 Průměr. nabídka
    16 nabídky
    npm start issue 6 dní left
    OVĚŘENÉ

    i have this issue with npm start npm ERR! code ENOENT npm ERR! syscall open npm ERR! path D:2 Downloadsdwt-listing-react-native-app npm ERR! errno -4058 npm ERR! enoent ENOENT: no such file or directory, open 'D:2 Downloadsdwt-listing-react-native-app' npm ERR! enoent This is related to npm not being able to find a file. npm ERR! enoent don't bid if you cant fix it

    €6 / hr (Avg Bid)
    €6 / hr Průměr. nabídka
    22 nabídky
    Build a chrome extension 6 dní left
    OVĚŘENÉ

    Develop a chrome extension exactly like this

    €104 (Avg Bid)
    €104 Průměr. nabídka
    4 nabídky

    Need a website developer Work from home 2000 per month Experience Certificate will be provided . At least having knowledge about react.js , MERN

    €78 (Avg Bid)
    €78 Průměr. nabídka
    8 nabídky
    Wordpress expert 6 dní left

    I need a wordpress expert to build custom api in my site. It is long term project. I need a test before hire someone for custom api in wp site. Testing is simple task and you should finish it within 1 hour. If you pass the testing, I will pay $10 and will share project. WHO CAN THIS JOB?

    €14 / hr (Avg Bid)
    €14 / hr Průměr. nabídka
    46 nabídky

    Desenvolver um código onde consiga alterar um dado gravado inicialmente na abertura de conta, para poder realizar uma operação financeira direcionando para outra informação gravada posteriormente. Favor entrar em contato no chat com as dúvidas diretas sobre o projeto. PS. O pagamento só sera efetuado após verificação que o projeto foi realmente validado.

    €435 (Avg Bid)
    €435 Průměr. nabídka
    15 nabídky

    We developed a game-engine based talking avatars for a cinematic multi characters project. I was checking the potentials of doing a light version online and saw potentials in an old JS based platform (will share links below and more useful content once we discuss the project with you). So, we want to try that in a small "project" that requires no sophisticated stuff before making decisions. If the stuff below were done 6 years ago, I imagine it is more doable now. Follow the links to make the point clear: Here is a talking avatar with saved wav files you can click to test (open in chrome, and give it time to load for all the links below): Now, instead of saved wave files, we want to be able to edit that sample, as an example, so we can post wave files to it (maybe via a JS a...

    €46 (Avg Bid)
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    13 nabídky

    Estoy en 2o de batxillerato y en Catalunya es obligatorio hacer un trabajo bastante importante. Tiene que tener una parte práctica y yo quería hacer una aplicación. Contacte con un programador para que me la hiciera por 20€, pero se le estropeó el ordenador y no pudo terminarla. La tengo que tener acabada para el 11 de octubre (sé que es muy justo, pero no me esperaba el fallo en el ordenador). Quería hacer un sistema de puntos, se llama economía de fichas y es especial para tratar a los niños con TDAH. Quería que fuera una aplicación similar a alguna de organización, por ejemplo “ticktick”. En una parte tendría que haber un calendario y que pudieran ir a cualquier día y les lle...

    €166 (Avg Bid)
    €166 Průměr. nabídka
    21 nabídky

    We are seeking a motivated and driven Software Engineer to help build web-based software from the ground up that enables our merchants to view, manage, and gain insights into the orders coming through or platform. These tools will be an enterprise level software that will allow our clients to get a high level overview of what is going on both in live time and in retrospect. The ideal candidate will understand full stack web application development but have a passion for best-in-class front end design. Project manage in a demanding and fast-paced environment is a must. We are a strong, agile, and highly motivated team working to build the next gen consumer purchasing platform.

    €20 / hr (Avg Bid)
    €20 / hr Průměr. nabídka
    139 nabídky
    Expert on electron js needed 6 dní left
    OVĚŘENÉ

    development Need an expert to fix around 15 requirements. Budget is 100 Usd

    €128 (Avg Bid)
    €128 Průměr. nabídka
    57 nabídky

    We are developing a small web application that allows users to request a 2nd opinion from Doctors on the platform. We are close to the deadline and we need 3 to 4 pages of frontend design complete in 3 days. You will work on the complete website but there are only 3 - 4 main areas you have to focus on 1) Dr grid - The card design is perfect you just have to make it in a column of three and some minor UI changes to give clean look... Also the responsiveness 2) Dr profile - The layout is complete... just need to clean the page and change some colors and fonts and responsiveness Reference for dr profile page - 3) Header and footer - Here's the Reference - responsiveness 4) There will be a multistep form to collect the request from the user... we have built need design update a...

    €65 (Avg Bid)
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    11 nabídky
    Build a forex trading platform 6 dní left
    OVĚŘENÉ

    Deadline: 15 days Build a forex trading platform. I have a webpage if they can create a similar platform like that:

    €1793 (Avg Bid)
    €1793 Průměr. nabídka
    78 nabídky
    Build me a website -- 2 6 dní left
    OVĚŘENÉ

    There is an existing website i want to basically duplicate its content. Please find URL website below.

    €159 (Avg Bid)
    €159 Průměr. nabídka
    158 nabídky

    Clean up existing PHP script with 10+ files for sharing with other people. Create a centralized config file. Remove duplicated code across scripts. Remove unnecessary libraries. Reduce overall filesize of scripts. Prepare to share on Github.

    €163 (Avg Bid)
    €163 Průměr. nabídka
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    Hi all (read on if you're around over the next 3 days to help with our app which has had a spike in usage and can't crash because people's lives depend on it..!) thank you!! Info below: We have a SAAS product which enables carers to make automated calls to the people they support. These automated calls remind the person to do things like "please remember to take your medication" or "if you need any assistance, please press 1". We've recently had a huge increase in usage (at the moment we make ~100 calls / day) and we're expected to be making 15,000 calls a day (starting on Monday...!!!!). I'm a little worried as we've tested our system for the small number of calls however this is a huge increase that I'm not that co...

    €35 / hr (Avg Bid)
    DOM
    €35 / hr Průměr. nabídka
    15 nabídky

    We would like to build a professionally website with scroll animations/transitions similar to Nothing too comprehensive, but should be rightly done. Please send us samples of your past websites.

    €200 (Avg Bid)
    €200 Průměr. nabídka
    27 nabídky

    Nejlepší články z komunity JavaScript