JavaScript Control Using Library

Overview

This document discusses how to add a JavaScript Control using a third-party library.

Add Script Control

In order to add a JavaScript library to use in Decisions, add a “Script” Control.

1. In a Designer Folder, select CREATE FORM in the Global Action Panel.
2. Choose the JavaScript control tab in the Create Form dialog.
3. Select Add Script.
   
4. In the Add JavaScript Control dialog, enter a name for the library.
5. Upload the library .js file.

Inside Your Control

Inside the JavaScript Control, hook into some exposed Decisions JavaScript to ensure the library is loaded.

PreactDemo.prototype.initialize = function(host, component) {
   // here “virtualPath” is a global variable in the Decisions client
   $.when(
     $DP.ScriptLoader.LoadScript(
       virtualPath + "/scripts/FormControls/jsFiles/preact.js"
     )
   ).then(function() {
      // Do initialization that depends on the 3rd party library
   }.bind(this))
 }  

For safety, it’s best to do the same check inside the other Decisions JavaScript Control API methods. e.g.

PreactDemo.prototype.setValue = function(data) {
   $.when(
     $DP.ScriptLoader.LoadScript(
       virtualPath + "/scripts/FormControls/jsFiles/preact.js"
     )
   ).then(function() { /* Update Control */ }.bind(this));
 }