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Updated README for callback #212

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Jul 2, 2019
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Updated README for callback #212

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8 changes: 7 additions & 1 deletion README.md
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Expand Up @@ -140,7 +140,13 @@ url = data.filesUploaded[0].url
For version `v3`, you can add following callbacks: `onOpen`, `onClose`, `onFileUploadFinished`, `onFileSelected`, `onUploadStarted`, to `pickerOptions`.

```erb
<%= filestack_picker_element 'button test', 'callbackForButton', id: 'someuniqueid', input_id: 'someuniqueinputid', pickerOptions: { onClose: 'callbackOnClose', onOpen: 'callbackOnOpen' } %>
<%= filestack_picker_element 'button test', 'callbackForButton', id: 'someuniqueid', input_id: 'someuniqueinputid', pickerOptions: { onClose: 'callbackOnClose', onOpen: 'callbackOnOpen', onFileUploadFinished: 'callbackOnFileUploadFinished' } %>
```

where following callbacks `callbackOnClose`, `callbackOnOpen`, `callbackOnFileUploadFinished` are javascript function's name and refer to your own created function. For instance:

```js
function onFileUploadFinishedCallback(data) {console.log(data);}
```

### Filestack Form Helper
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