Welcome to macros programming with JavaScript in the Google Sheets environment. This book is for anyone who wants to find out how to create and modify macros with custom functions. As in any other spreadsheet, macros enable you to make manual actions automatic and avoids having to repeat tasks. The system creates codes (functions) you can modify if you need to. After recording, you can execute macro instructions at any time. You will discover how to manage spreadsheet objects, such as worksheets, cells, properties, files stored in the Drive, variables, control structures and other features.<br><br>ABOUT THE AUTHOR<br><br><b>Rémy Lentzner</b> has been an IT trainer since 1985. Specialized in mastering office automation tools, he supports companies in the professional training of their employees. Self-taught, he has twenty computer books to his credit.