mirror of https://github.com/embarklabs/embark.git
51 lines
1.6 KiB
Markdown
51 lines
1.6 KiB
Markdown
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title: Smart Contracts in JavaScript
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layout: docs
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---
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In order to talk to our deployed Smart Contracts through a web application, we typically need a JavaScript equivalent that offers APIs to make this possible. Embark generates JavaScript artifacts for all Smart Contracts used by our application.
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In this guide we'll take a quick look how to make use of them!
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## Importing and using Smart Contracts
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Embark will [automatically generate artifacts](/docs/javascript_usage.html#Embark-Artifacts) for all configured Smart Contracts in our application, making them available to an application's front-end. Allwe have to do is importing them accordingly. For example, the Smart Contract below:
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```
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contract SimpleStorage {
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uint public storedData;
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function SimpleStorage(uint initialValue) {
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storedData = initialValue;
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}
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function set(uint x) {
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storedData = x;
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}
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function get() constant returns (uint retVal) {
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return storedData;
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}
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}
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```
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Will available as JavaScript object, after artifact generation and can be imported as:
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```
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import { SimpleStorage } from './embarkArtifacts/contracts';
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```
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Notice that the exact path to the Smart Contract source is configured using the `generationDir` property in [Embark's configuration](/docs/configuration.html#generationDir).
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Once imported, Smart Contract APIs can be used as needed. The code below uses Web.js syntax and might differ from your APIs, depending on what web3 connector you've installed.
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```
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SimpleStorage.methods.set(100).send();
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SimpleStorage.methods.get().call().then(value => {
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console.log(value);
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});
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SimpleStorage.methods.storedData().call().then(value => {
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console.log(value);
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});
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```
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