C-Level Extensibility > The C-level extensibility API > long JS_GetArrayLength() |
![]() ![]() ![]() |
Description
Given a pointer to an array object, gets the number of elements in the array.
Arguments
JSContext
*cx,
JSObject
*obj
![]() |
cx is the opaque JSContext pointer that was passed to the JavaScript function. |
![]() |
obj is a reference to an array object. |
Returns
The number of elements in the array, or -1 upon failure.
![]() ![]() ![]() |