var a = { k1: 1 };
var b = a;
a.k3 = a = { k2: 2 };
console.log(a); // {k2: 2}
console.log(b); // {k1:1;k3:{k2:2}}
- 点的优先级大于优先级
- 对象存储在堆内存中,变量是指向堆内存地址的指针
var a = { k1: 1 };
var b = a;
a.k3 = a = { k2: 2 };
console.log(a); // {k2: 2}
console.log(b); // {k1:1;k3:{k2:2}}
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