This guide documents the JavaScript Application Programming Interface (API) for AutoCAD®. 

Using the acedInvoke(…), you can call the JavaScript functions from your C++/.NET/LISP code. You can call the JavaScript functions by registering them using this global JavaScript function syntax: 

defun(string name, callback) 

Acad::ErrorStatus acjsLoadJSScript(const ACHAR* uriOfHTML)

Loads an HTML file in a hidden window and executes the Javascript. This function is also exposed as WEBLOAD command in AutoCAD. 

Acad::ErrorStatus acjsDefun(const ACHAR* name, JsCallbackType callback);

Registers a callback that JavaScript code can call. 

Where JsCallbackType is defined as follows:

typedef  JSON (*JsCallbackType)(const JSON* params)

where JSON is defined as follows: 

JSON is a class/structure type that can represent JSON in C++. 

Assembly: accoremgd.dll 

Namespace: Autodesk.AutoCAD.ApplicationsServices.Core Class: Application 

Methods:  

void LoadJSScript(System.Uri  uriOfHTML)

Loads the HTML file specified and executes JavaScript code. 

If you want to call .NET function in JavaScript, you can define the function in .NET using this syntax:

[JavaScriptCallback("DotNetCallbackFunc")]
  public string DotNetCallbackFunc(string json)

where: 

DotNetCallbackFunc is the user defined function. 

(webload, uriOfHtml )

Loads an HTML page and executes JavaScript code.