代码输出： ~~~ const obj1 = { key: 'value1', }; const obj2 = { key: 'value2', }; function func1(obj1) { obj1.key = 'value11'; return obj1; } function func2(obj2) { obj2 = { key: 'value22', }; return obj2; } func1(obj1); func2(obj2); console.log(obj1, obj2); console.log(obj2 === func2(obj2)); ~~~