四個關於內存的面試題

1、var a = 1     var b = a      b = 2 請問a顯示幾？a = 1 2、var a = {name:'a'}      var b = a      b = {name:'b'} 請問a.name是多少？a.name = a 3、var a = {name:'a'}     var b = a     b.name = 'b' 請問a.name是多少？a.name

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