Join MDN and developers like you at Mozilla's View Source conference, 12-14 September in Berlin, Germany. Learn more at


A type for representing the size of an object (not the size of a pointer). This is the same as the corresponding type in libc.


#include <prtypes.h>

typedef size_t PRSize;

Document Tags and Contributors

 Contributors to this page: teoli, WilliamCushing, Rappo
 Last updated by: teoli,