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Write javascript function(s) and work with web3 to communicate with smart contract (solidity)

€30-250 EUR

Cancelled
Posted almost 6 years ago

€30-250 EUR

Paid on delivery
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ INFO: PLEASE READ COMPLETELY, OTHERWISE I REJECT YOUR OFFER. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Hello, I have a project where I need someone with experience in javascript AND solidity/web3. Basic information: The project is an product marketplace, built on the ethereum blockchain with a smart contract. Users can place articles through some clicks and the articles will be saved on the blockchain through the smart contract functions. Following information: Smart contract (basic information): I am not allowed to share too much about the smart contract, but I share some information. The articles are stored in an array named articles. Articles are built with a struct with following variables: seller, price, bid, bidder. Following functions are used: function getArticle(uint id) returns the seller, price, bid and bidder. Website (basic information): Best way to explain is to see the website as eBay. It has on the homepage the most recent 10 articles. What do I need help with? I built already website and contract. Now I need help with calling the contract through javascript and web3/MetaMask. Following should happen: 1. When the user visits the website, the recent 10 auctions should be loaded and displayed in a div-element on the website. The call getArticlesAmount() returns a uint with the length of the array articles. Then the recent 10 should be loaded with the call getArticlesInfo which as said above returns the info of the article. 2. Those 10 articles should be called every second. For example when a user is on the website and someone bids an offer on one of these articles, the user should immediatly see it. So I need only someone who has experience in javascript and web3. I won't share ABI or more contract source as that's enough for now. If you can't work with this information, please do not apply. Please share as much information as possible, about how long you need for it, how much it costs etc. Thanks!
Project ID: 17162284

About the project

14 proposals
Remote project
Active 6 yrs ago

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14 freelancers are bidding on average €171 EUR for this job
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Hi, I am an experienced programmer and I'm sure I can complete your project asap. Please contact me and tell about your project details. I promise a high quality and punctual work. Thanks. Write javascript function(s) and work with web3 to communicate with smart contract (solidity) Javascript,
€155 EUR in 1 day
4.8 (8 reviews)
5.3
5.3
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how are you,sir? I am a ultimate developer who has rich experience in this field. If you contact me, you and i will all be happy. Thank you for your reply in advance. Write javascript function(s) and work with web3 to communicate with smart contract (solidity) Javascript,
€155 EUR in 1 day
5.0 (3 reviews)
4.5
4.5
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I have more than 4 years experience in PHP programming and well versed in android and in open-sources / Framework like Codeigniter , OpenCart, Wordpress and other Web solutions . My strengths are web development, PHP, ajax, CSS, HTML , Web Service etc. I have spent a significant part of my career also working as an HTML,CSS,BOOTSTRAP,JAVASCRIPT,PHP,AJAX, JQUERY, MYSQL, and Codeigniter etc... Developer. If hired by you I will deliver my work to the highest quality. I am ready to be hired by you.
€155 EUR in 3 days
0.0 (0 reviews)
0.0
0.0
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I have excellent hand with DaPP. HIGHLY interested with your project. I'm ready to start right now. My completion rate is always 100% and I STRICTLY BITE WHICH I CAN CHEW. Knock me please
€150 EUR in 3 days
5.0 (7 reviews)
0.0
0.0
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My Expertise includes Php,Laravel, CakePhp, CodeIginator, Bootstrap. I have more than 7 years of exp, successfully integrated many latest scripts while working on front-end and as well as on back-end. We have 6.5 years of experienced people in our team from this domain. You may have a check on our portfolio for the work reference. I am just a message away if you have any queries! Thanks, Tushar
€155 EUR in 3 days
0.0 (0 reviews)
0.0
0.0

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Germany
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Member since Jun 13, 2018

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