Microsoft Office Suite Excel API (Office.js) JavaScript API for building add-ins and automating Microsoft Excel. Documentation GitHub Documentation 📖 Documentation https://learn.microsoft.com/en-us/javascript/api/excel 📖 GettingStarted https://learn.microsoft.com/en-us/office/dev/add-ins/quickstarts/excel-quickstart-jquery Other Resources 🔗 Code Samples https://github.com/OfficeDev/Office-Add-in-samples