Function ul_sys::JSObjectGetPropertyAtIndex

pub unsafe extern "C" fn JSObjectGetPropertyAtIndex(
    ctx: JSContextRef, 
    object: JSObjectRef, 
    propertyIndex: c_uint, 
    exception: *mut JSValueRef
) -> JSValueRef

@function @abstract Gets a property from an object by numeric index. @param ctx The execution context to use. @param object The JSObject whose property you want to get. @param propertyIndex An integer value that is the property's name. @param 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. @result The property's value if object has the property, otherwise the undefined value. @discussion Calling JSObjectGetPropertyAtIndex is equivalent to calling JSObjectGetProperty with a string containing propertyIndex, but JSObjectGetPropertyAtIndex provides optimized access to numeric properties.