Developer Function: Script: $p.events.before_set
## Overview
This explains how to specify a method to be executed after sending data to the server and before updating the screen contents.
## How To Use
##### JavaScript
```
$p.events.before_set = function (args) {
//Processing content
}
or
$p.events.before_set_{Value of the data-action attribute} = function (args) {
//Processing content
}
```
*Get this if you want to explicitly write the value of the data-action attribute of the button that will cause the event.
## Sample Code
Set the following sample code in the Pleasanter script, set the output destination to "Edit", and then press the "Update" button (in this example, the value of the data-action attribute, Update, is explicitly stated).
##### JavaScript
```
$p.events.before_set_Update = function () {
$p.setMessage('#Message', JSON.stringify({
Css: 'alert-success',
Text: 'Before the screen update.''
})
);
}
```
## Related Information
[FAQ：$p.events.on_editor_loadを複数設定できるようにしたい](faq-multiple-on-editor-load)
