How to interact with blockchain from web application?

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I have written a Web application in Javascript which uses Blockchain to store data and then retrieve and display it. How can I interact with Blockchain from my Web application?
Jan 11 in Blockchain by slayer
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You can use the Web3.js library to interact with the Blockchain from your javascript. You can find the library in the following link: https://github.com/ethereum/web3.js

answered Jan 11 by Omkar
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