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This article delves into two core methods for hiding columns in AG-Grid: static configuration via columnDefs and dynamic control using the Column API. It focuses on the role of the suppressToolPanel property, which ensures columns are also hidden from the tool panel. The paper details the usage of setColumnVisible and setColumnsVisible methods, including parameter passing and practical applications, with code examples demonstrating how to hide single columns, multiple columns, and entire column groups. Finally, it compares the advantages and disadvantages of static configuration versus dynamic control, providing comprehensive technical guidance for developers.