借助全新 AI 智能体， ONLYOFFICE 为快速发展的数字世界提供了前沿工具。作为开源项目，我们始终鼓励用户通过创新拓展能力边界。现在，您不仅可通过自定义 AI 函数提升文档处理效率，更能参与 ONLYOFFICE AI 智能体功能开发大赛，将创意直接转化为生产力！ 本文提供详细实施指南（文末附大赛信息），助您快速掌握函数开发全流程。
什么是 AI 函数？AI 函数有什么用途？
AI 函数是 AI 智能体功能的核心构建模块。它们本质上是对 AI 助手发出的指令，可以告诉 AI 助手：
要向 AI 模型发送什么请求；
要对您的文档执行哪些操作。
借助 AI 函数，您可以扩展并控制 AI 与文档内容的交互方式。
如何使用 AI 函数
在 AI 插件中选择并添加模型。
按下 CTRL + / 打开 AI 智能体对话框。 输入提示并按 Enter。
示例：commentText 函数
commentText 函数可让您直接在文档中添加由 AI 生成的批注。工作流程如下：
选中要添加批注的单词；
打开 AI 智能体对话框（CTRL + B）；
输入指令，例如：“解释这段文字”；
按下 Enter。
AI 智能体将运行 commentText 函数，并在文档中插入相关批注：
为什么要为 AI 智能体添加自定义函数？
添加自定义 AI 函数可以扩展 AI 智能体能力，使其能精确满足个人需求。无论是处理文档、电子表格还是演示文稿，智能体的灵活性加上现代 AI 模型的强大功能，都能帮您把创意转化为现实，并整合进工作流中。
添加自定义 AI 函数的通用逻辑
智能体的所有 AI 函数都组织在 helpers 目录中，其结构如下：
cell.js – 电子表格编辑器的 AI 函数
slide.js – 演示文稿编辑器的 AI 函数
word.js – 文档编辑器的 AI 函数
创建新的自定义函数时，将其添加到其所属编辑器的适当文件中。
helpers 目录：https://github.com/ONLYOFFICE-PLUGINS/onlyoffice.github.io/tree/8a8b3e3237745bde2f99db5b8cee0abf2c637317/sdkjs-plugins/content/ai/scripts/helpers
添加自定义函数的过程包括两大阶段：
函数注册——在智能体环境中注册 AI 函数及其元数据。
函数执行——实现核心逻辑，包括向 AI 模型发送请求，以及利用我们的 Office API 处理文档内容。https://api.onlyoffice.com/zh-CN/docs/office-api/get-started/overview/
下面将详细介绍这两个阶段。
函数注册
要添加新函数，我们需执行 RegisteredFunction 对象。它允许我们为函数添加元数据和逻辑。以下示例展示了如何为文档编辑器添加 commentText 函数：
let func = new RegisteredFunction(); func.name = "commentText"; func.params = [ "type (string): whether to add as a 'comment' or as a 'footnote' default is 'comment')" ]; func.examples = [ "If you need to explain selected text as a comment, respond with:\n" + "[functionCalling (commentText)]: {\"prompt\" : \"Explain this text\", \"type\": \"comment\"}", "If you need to add a footnote to selected text, respond with:\n" + "[functionCalling (commentText)]: {\"prompt\" : \"Add a footnote to this text\", \"type\": \"footnote\"}", "If you need to comment selected text, respond with:\n" + "[functionCalling (commentText)]: {\"prompt\" : \"Comment this text\"}", "If you need to explain selected text as a footnote, respond with:\n" + "[functionCalling (commentText)]: {\"prompt\" : \"Explain this text\", \"type\": \"footnote\"}" ]其中：
func.name：AI 调用此函数时使用的名称（如 “commentText”）。
func.params：函数期望从 AI 处获得的参数列表。例如：
– prompt (string)：批注的描述或指令，为字符串格式。
– type (string)：您需要指定插入“批注” 还是 “脚注”类型，为字符串格式。
func.examples：提供给 AI 的正确函数调用示例。
func.description：向 AI 说明该函数的用途。
AI 使用这些参数。RegisteredFunction() 对象被定义在 helperFunc.js 文件中：https://github.com/ONLYOFFICE-PLUGINS/onlyoffice.github.io/blob/8a8b3e3237745bde2f99db5b8cee0abf2c637317/sdkjs-plugins/content/ai/scripts/helperFuncs.js
函数执行逻辑
注册函数后，我们要编写当 AI 被调用时该函数真正执行的逻辑。
使用 Asc.Editor.callCommand() 获取选中的文本。
func.call = async function(params) { let type = params.type; let isFootnote = "footnote" === type;// Executes a block of code inside the editor's context using the office=js API. let text = await Asc.Editor.callCommand(function(){ let doc = Api.GetDocument();// Gets the current selected text range. let range = doc.GetRangeBySelect(); let text = range ? range.GetText() : ""; if (!text) { text = doc.GetCurrentWord();// Selects the current word so comments can be applied to it. doc.SelectCurrentWord(); } return text; });通过组合 params.prompt 与所选文本，为 AI 构建提示。
let argPromt = params.prompt + ":\n" + text;
使用 AI.Request.create 初始化 AI.Request.create 对象（该对象在 engine.js 文件中被定义），用于向 AI 模型发送请求。
engine.js：https://github.com/ONLYOFFICE-PLUGINS/onlyoffice.github.io/blob/8a8b3e3237745bde2f99db5b8cee0abf2c637317/sdkjs-plugins/content/ai/scripts/engine/engine.js#L554
// Initializes a request engine for communicating with the AI model (e.g. Chat, Translation). let requestEngine = AI.Request.create(AI.ActionType.Chat); if (!requestEngine) return;
调用 chatRequest() 发送请求，并在回调中接收结果。
// Sends a prompt to the AI model and processes the response via callback. Can stream or wait. let result = await requestEngine.chatRequest(argPromt, false, async function(data) { if (!data) return;使用 AddFootnote() 或 AddComment() 将回复插入为脚注或批注。
AddFootnote 执行：
if (isFootnote) { let addFootnote = true;// Sends a prompt to the AI model and processes the response via callback. Can stream or wait. let result = await requestEngine.chatRequest(argPromt, false, async function(data) { if (!data) return;// Marks the end of a logical group or block action in the editor. await checkEndAction(); Asc.scope.data = data; Asc.scope.model = requestEngine.modelUI.name; if (addFootnote) {// Executes a block of code inside the editor's context using the document model API. await Asc.Editor.callCommand(function(){// Returns the main document object, which gives access to all editing, structure, and selection APIs. Api.GetDocument().AddFootnote(); }); addFootnote = false; }// Inserts the AI-generated result into the document at the current selection or cursor. await Asc.Library.PasteText(data); });AddComment 执行：
let commentId = null;// Sends a prompt to the AI model and processes the response via callback. Can stream or wait. let result = await requestEngine.chatRequest(argPromt, false, async function(data) { if (!data) return;// Marks the end of a logical group or block action in the editor. await checkEndAction(); Asc.scope.data = data; Asc.scope.model = requestEngine.modelUI.name; Asc.scope.commentId = commentId;// Executes a block of code inside the editor's context using the document model API. commentId = await Asc.Editor.callCommand(function(){// Returns the main document object, which gives access to all editing, structure, and selection APIs. let doc = Api.GetDocument(); let commentId = Asc.scope.commentId; if (!commentId) {// Gets the current selected text range, which can be modified or annotated. let range = doc.GetRangeBySelect(); if (!range) return null; let comment = range.AddComment(Asc.scope.data, Asc.scope.model, "uid" + Asc.scope.model); if (!comment) return null; doc.ShowComment([comment.GetId()]); return comment.GetId(); } let comment = doc.GetCommentById(commentId); if (!comment) return commentId; comment.SetText(comment.GetText() + scope.data); return commentId; }); }); }注意！
为确保整个修改块在请求完成后可以被撤销，我们在 commentText 函数中统一使用了 StartAction 与 EndAction 方法。
StartAction ：https://api.onlyoffice.com/zh-CN/docs/plugin-and-macros/interacting-with-editors/text-document-api/Methods/StartAction/
EndAction：https://api.onlyoffice.com/zh-CN/docs/plugin-and-macros/interacting-with-editors/text-document-api/Methods/EndAction/
带完整注释的 commentText 函数实现：
(function(){// Defines the commentText function — lets AI insert a comment or footnote for selected text using AI response. WORD_FUNCTIONS.commentText = function() {// Creates a new function object that will be registered and exposed to the AI. let func = new RegisteredFunction(); func.name = "commentText";// Lists the parameters expected by the function. These are passed as a JSON object by the AI Agent. func.params = [ "type (string): whether to add as a 'comment' or as a 'footnote' (default is 'comment')" ];// Gives example JSON inputs to teach the AI how to correctly invoke this function. func.examples = [ "If you need to explain selected text as a comment, respond with:\n" + "[functionCalling (commentText)]: {\"prompt\" : \"Explain this text\", \"type\": \"comment\"}", "If you need to add a footnote to selected text, respond with:\n" + "[functionCalling (commentText)]: {\"prompt\" : \"Add a footnote to this text\", \"type\": \"footnote\"}", "If you need to comment selected text, respond with:\n" + "[functionCalling (commentText)]: {\"prompt\" : \"Comment this text\"}", "If you need to explain selected text as a footnote, respond with:\n" + "[functionCalling (commentText)]: {\"prompt\" : \"Explain this text\", \"type\": \"footnote\"}" ]; // The actual logic that gets executed when the AI calls this function. func.call = async function(params) { let type = params.type; let isFootnote = "footnote" === type;// Executes a block of code inside the editor's context using the office-js API. let text = await Asc.Editor.callCommand(function(){ let doc = Api.GetDocument();// Gets the current selected text range. let range = doc.GetRangeBySelect(); let text = range ? range.GetText() : ""; if (!text) { text = doc.GetCurrentWord();// Selects the current word so comments can be applied to it. doc.SelectCurrentWord(); } return text; }); let argPromt = params.prompt + ":\n" + text;// Initializes a request engine for communicating with the AI model (e.g. Chat, Translation). let requestEngine = AI.Request.create(AI.ActionType.Chat); if (!requestEngine) return; let isSendedEndLongAction = false;// Marks the end of a logical group or block action in the editor. async function checkEndAction() { if (!isSendedEndLongAction) {// Marks the end of a logical group or block action in the editor. await Asc.Editor.callMethod("EndAction", ["Block", "AI (" + requestEngine.modelUI.name + ")"]); isSendedEndLongAction = true } }// Starts a block action in the editor, used for undo/redo await Asc.Editor.callMethod("StartAction", ["Block", "AI (" + requestEngine.modelUI.name + ")"]);// Starts a block action in the editor, used for undo/redo await Asc.Editor.callMethod("StartAction", ["GroupActions"]); if (isFootnote) { let addFootnote = true;// Sends a prompt to the AI model and processes the response via callback let result = await requestEngine.chatRequest(argPromt, false, async function(data) { if (!data) return;// Marks the end of a block action in the editor. await checkEndAction(); Asc.scope.data = data; Asc.scope.model = requestEngine.modelUI.name; if (addFootnote) {// Executes a block of code inside the editor's context using the office-js API. await Asc.Editor.callCommand(function(){ Api.GetDocument().AddFootnote(); }); addFootnote = false; }// Inserts the AI-generated result into the document at the current selection or cursor. await Asc.Library.PasteText(data); }); } else { let commentId = null;// Sends a prompt to the AI model and processes the response via callback. let result = await requestEngine.chatRequest(argPromt, false, async function(data) { if (!data) return;// Marks the end of a block action in the editor. await checkEndAction(); Asc.scope.data = data; Asc.scope.model = requestEngine.modelUI.name; Asc.scope.commentId = commentId;// Executes a block of code inside the editor's context using the office-js API. commentId = await Asc.Editor.callCommand(function(){ let doc = Api.GetDocument(); let commentId = Asc.scope.commentId; if (!commentId) {// Gets the current selected text range. let range = doc.GetRangeBySelect(); if (!range) return null; let comment = range.AddComment(Asc.scope.data, Asc.scope.model, "uid" + Asc.scope.model); if (!comment) return null; doc.ShowComment([comment.GetId()]); return comment.GetId(); } let comment = doc.GetCommentById(commentId); if (!comment) return commentId; comment.SetText(comment.GetText() + scope.data); return commentId; }); }); }// Marks the end of a block action in the editor. await checkEndAction();// Marks the end of a block action in the editor. await Asc.Editor.callMethod("EndAction", ["GroupActions"]); }; return func; }我们始终致力于紧跟现代技术，确保智能 AI 智能体持续演进，以满足当今数字世界需求。通过创建自定义函数，您可以扩展 AI 能力，直至能完全满足个人需求。我们期待您的创意与想法。
