如下代码，请问此时栈内存中是否存在2个z
var z = "5"; console.log(z); console.log(typeof(z)); z = "5"+"6"; console.log(z); console.log(typeof(z)); 请问此时栈内存中是否存在2个z
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var z = "5"; console.log(z); console.log(typeof(z)); z = "5"+"6"; console.log(z); console.log(typeof(z)); 请问此时栈内存中是否存在2个z
2019-03-06
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