使用变量从数组中检索项目

Question

我想设置一个变量来更改数值以获得正确的数组项

Console.log 这个，我得到了我需要的东西，但是任何添加变量的尝试都不起作用

// This works
lastKickoffTime = m_nfl_schedule_ar.w_5.slice(-1).pop().kickoff

没有成功的尝试

weekNum = "5";

lastKickoffTime = m_nfl_schedule_ar.['w_'+weekNum].slice(-1).pop().kickoff

lastKickoffTime = m_nfl_schedule_ar.w_[weekNum].slice(-1).pop().kickoff

lastKickoffTime = m_nfl_schedule_ar.w_weekNum.slice(-1).pop().kickoff

lastKickoffTime = m_nfl_schedule_ar.w_+weekNum+.slice(-1).pop().kickoff

lastKickoffTime = m_nfl_schedule_ar.w_'+weekNum+'.slice(-1).pop().kickoff

Answer 1

lastKickoffTime = m_nfl_schedule_ar.['w_'+weekNum].slice(-1).pop().kickoff几乎是对的。 应该：

lastKickoffTime = m_nfl_schedule_ar['w_'+weekNum].slice(-1).pop().kickoff