Imports
This code begins with module imports, which is a fancy way of saying— "someone wrote some code that does something, and I want to use that something in my code". It isn't possible to use libraries, which are just collections of code created by someone, without formally importing them at the beginning of your code. Imports must appear before usage of anything within them because like the English language, JavaScript interpreters read from top to bottom.
The module imports the Algodv2 class from the algosdk library. The require statement is used to import the algosdk library in Node.js.
const algosdk = require('algosdk');In this code, the algosdk library is imported using require. Then, the Algodv2 client is instantiated with the API token, server address, and port.
Now let's get the status of the Algod client:
const algodToken = 'Your algod API token';
const algodServer = 'http://YourAlgodServerAddress';
const algodPort = 'YourAlgodServerPort';
const algodClient = new algosdk.Algodv2(algodToken, algodServer, algodPort);
algodClient.status().do()
.then(status => {
console.log(status);
})
.catch(err => {
console.error(err);
});We use the status() method to get the status of the Algod client. This method returns a promise, so we use .then() to handle the successful response and .catch() to handle any errors.
Next, we generate a random number using the random module. In JavaScript, we use Math.random() to generate random numbers.
const random_number = Math.floor(Math.random() * 101);
console.log(random_number);To decide on whether or not you want to import a specific file, function, or method, you would need to use your intuition! For example, you may only need a specific function from a module.
const { Algodv2 } = require('algosdk');
const algodToken = 'Your algod API token';
const algodServer = 'http://YourAlgodServerAddress';
const algodPort = 'YourAlgodServerPort';
const algodClient = new Algodv2(algodToken, algodServer, algodPort);Now you can use algodClient for your transactions or other operations