Word Style Checking Add-in Built on Angular 2.0

Important Note: This sample uses the latest lite-server (version 2.6.1) to host the add-in. This server package has a dependency on a version of the xmlhttprequest-ssl package that has a security vulnerability. This vulnerability does not pose a problem for running and modifying this sample on your development computer, but do not use lite-server 2.6.1 for a production add-in.

Learn how to create an add-in that uses the LocationRelation and compareLocationWith APIs of the Word JavaScript APIs to perform a search and replace that skips some ranges based on their location relative to other ranges. The add-in is built on the Angular 2.0 framework, and it also shows how to use the design samples from Office Add-in UX Design Patterns Code.

Table of Contents

Change History

August 1, 2016:

  • Initial version.

September 15 - October 17th, 2016:

  • Minor updates.

December 11th, 2020:

  • Changed system for creating and installing the SSL certificates for HTTPS.


  • Word 2016 for Windows, build 16.0.6727.1000 or later.
  • Node and npm The project is configured to use npm as both a package manager and a task runner. It is also configured to use the Lite Server built into npm as the web server that will host the add-in during development, so you can have the add-in up and running quickly. You are welcome to use another task runner or web server.
  • Git Bash (Or another git client.)

Configure the project

  1. In the folder where you want to put the project open a git bash shell and take these steps:

    1. Run git clone {URL of this repo} to clone this repo to your local machine. Your project will be created in a subfolder.
    2. In the bash shell, navigate to the root of the new project.
    3. Run npm install to install all of the dependencies itemized in the package.json file.
  2. Open a system Command Prompt as an administrator and take these steps:

    1. Navigate to the root of the project.

    2. Run the command: npx office-addin-dev-certs install --machine.

      If you get the following prompt, click Yes.

      Screenshot of a dialog that warns about the SSL certificate and asks user to accept or deny installation of it.

    3. Leave the Command Prompt open.

  3. In your code editor, open the bs-config.json file in the root of the project.

  4. Replace the string "YOUR-USER-NAME-ON-COMPUTER" in both places with your username on the computer.

  5. Save and close the file.

Deploy the add-in

Now you need to let Microsoft Word know where to find the add-in.

  1. Create a network share, or share a folder to the network.
  2. Place a copy of the Word-Add-in-Angular2-StyleChecker.xml manifest file, from the root of the project, into the shared folder.
  3. Launch Word and open a document.
  4. Choose the File tab, and then choose Options.
  5. Choose Trust Center, and then choose the Trust Center Settings button.
  6. Choose Trusted Add-ins Catalogs.
  7. In the Catalog Url field, enter the network path to the folder share that contains Word-Add-in-Angular2-StyleChecker.xml, and then choose Add Catalog.
  8. Select the Show in Menu check box, and then choose OK.
  9. A message is displayed to inform you that your settings will be applied the next time you start Microsoft Office. Close Word.

Run the project

In the Command Prompt, run npm start to start the web service. (The home page of the project may open in the default browser. Just close it. Add-ins can only run correctly in the context of an Office application.)

Start the add-in

  1. Restart Word and open a Word document.
  2. On the Insert tab in Word 2016, choose My Add-ins.
  3. Select the SHARED FOLDER tab.
  4. Choose Style Checker, and then select OK.
  5. If add-in commands are supported by your version of Word, the UI will inform you that the add-in was loaded.
  6. On the Home ribbon is a new group called Style Checker with a button labeled Show and a blue pencil icon. Click that button and the add-in will open to a page of instructions.

Note: The add-in will load in a task pane if add-in commands are not supported by your version of Word.

Test the add-in

  1. When you are finished with the instructions, click Get Started.
  2. When the Find and Replace page opens, there is a command bar at the top with a menu button. Click the button to open the menu.
  3. Select Insert sample content. Click the button again to close the menu. The document now has unformatted text about Office Add-ins, including a fictional quotation. The writer has used an "OAI" to abbreviate "Office Add-in" and so does the anonymous quotation.
  4. In the Find box enter "OAI".
  5. In the Replace box enter "Office Add-in".
  6. The change should not be made in the paragraph that is a direct quotation, so enter the number 2 in the Skip Paragraph Number box. This is the zero-based number of the paragraph.
  7. Select Replace. Every instance of "OAI" except the one in the skipped paragraph is changed.
  8. Experiment with other search and replace strings.

Note: This sample add-in accepts only one number in the Skip Paragraph Number box and you must have some number in the box. A production add-in would allow no paragraphs to be skipped or multiple paragraphs to be skipped and would have additional ways of designating which paragraphs should be skipped; such as skipping based on paragraph style.

Change the settings of the add-in

  1. Open the menu button on the command bar again and select Settings.
  2. On the Settings page, you'll see that by default the instructions page opens every time the add-in is run. Use the radio buttons to specify that the instructions page will appear only the first time that the add-in is run.
  3. Close the task pane and then relaunch the add-in by selecting the Show button again. The add-in will open with the Find and Replace page instead of the instructions page.
  4. Navigate to the Settings page again. You can select the Show Instructions button to open the instructions page, or change the instructions setting back to open the instructions page every time the add-in is run.

Understand the code

All of the code that uses the Office and Word JavaScript APIs is in the file word.document.service.ts. The compareLocationWith() method that this sample demonstrates is in the replaceFoundStringsWithExceptions() method.

The code first gets a collection of all the ranges that match the user's search term. It then gets a collection of all the paragraph ranges in the document.

let foundItems: Word.SearchResultCollection = context.document.body.search(searchString, { matchCase: false, matchWholeWord: true }).load(); let paras : Word.ParagraphCollection = context.document.body.paragraphs.load();

After the collections are loaded with a call of context.sync(), the code creates an array of the paragraph ranges that the user excludes from the replacement. (Note that excludedParagraph is a parameter passed to the method.)

let excludedRanges: Array<Word.Range> = []; excludedRanges.push(paras.items[excludedParagraph].getRange('Whole'));

The code then loops through the iterables to determine which search results are inside excluded paragraphs and which are not. For each search result, this fact is recorded in a IReplacementCandidate object. The compareLocationWith() method returns "Inside" if the search result is inside the excluded paragraph. It returns "Equal" if the search result is a paragraph by itself and has been excluded.

for (let i = 0; i < foundItems.items.length; i++) {
    for (let j = 0; j < excludedRanges.length; j++) {
            range: foundItems.items[i],
            locationRelation: foundItems.items[i].compareLocationWith(excludedRanges[j])

The replacement candidate objects are loaded with a call to context.sync() and then the code iterates through them, replacing the search string with the replace string only in the paragraphs which are not in an excluded paragraph.

replacementCandidates.forEach(function (item) {
    switch (item.locationRelation.value) {
        case "Inside":
        case "Equal":
            item.range.insertText(replaceString, 'Replace');

See the replaceDocumentContent method of the same file to see how the Word insertText and nsertParagraph methods are used to insert sample content into the document.

See the rest of the code files to see how the design patterns from Office Add-in UX Design Patterns Code have been integrated into the Angular 2.0 framework.

Questions and comments

We'd love to get your feedback about this sample. You can send your feedback to us in the Issues section of this repository.

Questions about Microsoft Office 365 development in general should be posted to Stack Overflow. If your question is about the Office JavaScript APIs, make sure that your questions are tagged with [office-js] and [API].

Additional resources

Copyright (c) 2016 and 2020 Microsoft Corporation. All rights reserved.

This project has adopted the Microsoft Open Source Code of Conduct. For more information, see the Code of Conduct FAQ or contact opencode@microsoft.com with any additional questions or comments.