Function JSObjectSetPropertyAtIndex 

pub unsafe extern "C-unwind" fn JSObjectSetPropertyAtIndex(
    ctx: JSContextRef,
    object: JSObjectRef,
    property_index: c_uint,
    value: JSValueRef,
    exception: *mut JSValueRef,
)

Available on crate features JSBase and JSObjectRef only.

Sets a property on an object by numeric index.

Parameter ctx: The execution context to use.

Parameter object: The JSObject whose property you want to set.

Parameter propertyIndex: The property’s name as a number.

Parameter value: A JSValue to use as the property’s value.

Parameter exception: A pointer to a JSValueRef in which to store an exception, if any. Pass NULL if you do not care to store an exception.

Calling JSObjectSetPropertyAtIndex is equivalent to calling JSObjectSetProperty with a string containing propertyIndex, but JSObjectSetPropertyAtIndex provides optimized access to numeric properties.

Safety

• ctx must be a valid pointer.
• object must be a valid pointer.
• value must be a valid pointer.
• exception must be a valid pointer.