James Lefrère
73d7a57d38
* Use `eq` for example * Use the base `eq` function rather than `===`, so that comparisons are made in a consistent manner in docs * Add `eq` example * Add an example of using the `eq` method to the base docs * Adjust docs/examples * Fix a number of typos in the static docs and examples * Adjust various comments in docs examples such that they are written in a consistent case * Fix metadata docs spacing * Adjust the metadata documentation generation such that unnecessary spaces are trimmed
25 lines
795 B
JavaScript
25 lines
795 B
JavaScript
/* eslint-disable @typescript-eslint/require-await */
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/* eslint-disable @typescript-eslint/unbound-method */
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/* eslint-disable @typescript-eslint/no-var-requires */
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// Import the API
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const { ApiPromise } = require('@polkadot/api');
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async function main () {
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// Create a new instance of the api
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const api = await ApiPromise.create();
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// Subscribe to chain updates and log the current block number on update.
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const unsubscribe = await api.rpc.chain.subscribeNewHead((header) => {
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console.log(`Chain is at block: #${header.number}`);
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});
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// In this example we're calling the unsubscribe() function that is being
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// returned by the api call function after 20s.
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setTimeout(() => {
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unsubscribe();
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console.log('Unsubscribed');
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}, 20000);
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}
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main().catch(console.error);
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