Rules for this in JS from top to bottom in priority: 1. The function was called with 'new' 2. The function was called with 'call' or 'apply' specifying an exp

Rules for this in JS from top to bottom in priority: 1. The function was called with 'new' 2. The function was called with 'call' or 'apply' specifying an explicit this 3. The function was called via a containing/owning object (context) 4. DEFAUL: global object (expect strict mode--undefined)