preXhr

Ajax event - fired before an Ajax request is made

1.10 function( e, settings, json ) jQuery event object DataTables settings object Data that will be sent to the server in an object form HTML table element This event is triggered _prior_ to DataTables making an Ajax request to the server for data, and is thus the counterpart to the `dt-event xhr` event which is triggered _after_ the Ajax request has successfully returned data from the server. The `dt-event preXhr` event is designed for use by plug-in authors who can listen for this event in their extension and send any additional data that might be required. It is very similar to the `dt-init ajax.data` in this ability, with that option typically being used by those writing initialisation code for their table, rather than plug-in authors. Please note that, as with all DataTables emitted events, this event is triggered with the `dt` namespace. As such, to listen for this event, you must also use the `dt` namespace by simply appending `.dt` to your event name, as shown in the example below. ajax ajax.data ajax.json() xhr