March 2018
Beginner to intermediate
656 pages
20h 9m
English
Content preview from Mastering Blockchain - Second Edition
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Installing web3.js
Web3 can be installed via npm by simply issuing the following command:
$ npm install web3
It can also be directly downloaded from https://github.com/ethereum/web3.js.
web3.min.js, downloaded via npm, can be referred in the HTML files. This can be found under node_modules, for example,
/home/drequinox/netstats/node_modules/web3/dist/web3.js. Note that drequinox is specific to the user under which these examples were developed, you will see the user that you are running these commands under.
The file can optionally be copied into the directory where the main application is and can be used from there. Once the file is successfully referred in HTML or JS, Web3 needs to be initialized by providing an HTTP provider. This is ...