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# Ajax
`Ajax` is a droplab plugin that allows for retrieving and rendering list data from a server.
## Usage
Add the `Ajax` object to the plugins array of a `DropLab.prototype.init` or `DropLab.prototype.addHook` call.
`Ajax` requires 2 config values, the `endpoint` and `method`.
* `endpoint` should be a URL to the request endpoint.
* `method` should be `setData` or `addData`.
* `setData` completely replaces the dropdown with the response data.
* `addData` appends the response data to the current dropdown list.
```html
<a href="#" id="trigger" data-dropdown-trigger="#list">Toggle</a>
<ul id="list" data-dropdown><!-- ... --><ul>
```
```js
const droplab = new DropLab();
const trigger = document.getElementById('trigger');
const list = document.getElementById('list');
droplab.addHook(trigger, list, [Ajax], {
Ajax: {
endpoint: '/some-endpoint',
method: 'setData',
},
});
```
Optionally you can set `loadingTemplate` to a HTML string. This HTML string will
replace the dropdown list whilst the request is pending.
Additionally, you can set `onError` to a function to catch any XHR errors.
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