Generating IOTA addresses from a seed: API call Get_new_addresses()

IOTA101_0FF479CB6C0A.js

// The snippet is a part of the IOTA Developer Essentials project. You can reach it at https://hribek25.github.io/IOTA101/
// Complete description and story behind the snippet is available at: https://hribek25.github.io/IOTA101/Allchapters_javascript.ipynb.html#0FF479CB6C0A
// Requirement: A core module of IOTA Javascript Library (!npm install @iota/core)

var iotalib = require('@iota/core');

var NodeURL = "https://nodes.thetangle.org:443";
var MySeed = "WKQDUZTGFKSSLACUCHHLZRKZBHSDSCEBHKUPDLKFBQALEBKDMFRPUQGZRXAADPG9TSRTZGGBZOFRJCFMM";

var iota = iotalib.composeAPI({
    'provider': NodeURL
});

//Let's generate 3 addresses using default security level=2.
//It is a deterministic function - it always generates same addresses as long as the Seed, Security Level and Index are the same
//In case of iota.js library, it additionally checks generated addresses against the Tangle whether the address was spent from
//So the following snippet leverages also API calls against a node
//Please also note that generating addresses can take quite long
var promise = iota.getNewAddress(MySeed, { index: 0, total: 3, returnAll: true } )
                .then(address => {
                    console.log();
                    console.log(address); //returned addresses are printed out    
                })
                .catch(error => {
                    console.log("Error occured: %s", error);                
                });