¥Timerify ('function') Details
当 performanceEntry.type 等于 'function' 时，则 performanceNodeEntry.detail 属性将是列出计时函数的输入参数的 <Array>。
¥When performanceEntry.type is equal to 'function', the
performanceNodeEntry.detail property will be an <Array> listing
the input arguments to the timed function.