let n = 10,
obj = {n: 20};
let fn = obj.fn = (function () {
this.n++;
n++;
return function (m) {
n += 10 + (++m);
this.n += n;
console.log(n);
}
})(obj.n);
fn(10);
obj.fn(10);
console.log (n, obj.n);求解题过程
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