27 lines
891 B
Markdown
27 lines
891 B
Markdown
0x.js is a promise-based library. This means that whenever an asynchronous call is required, the library method will return a native Javascript promise. You can therefore choose between using `promise` or `async/await` syntax when calling our async methods.
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_Async/await syntax (recommended):_
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```javascript
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try {
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var availableAddresses = await web3Wrapper.getAvailableAddressesAsync();
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} catch (error) {
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console.log('Caught error: ', error);
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}
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```
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_Promise syntax:_
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```javascript
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web3Wrapper
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.getAvailableAddressesAsync()
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.then(function(availableAddresses) {
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console.log(availableAddresses);
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})
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.catch(function(error) {
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console.log('Caught error: ', error);
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});
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```
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As is the convention with promise-based libraries, if an error occurs, it is thrown. It is the callers responsibility to catch thrown errors and to handle them appropriately.
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