20、以下代码的输出结果是（） let obj = { first: 'hello', last: 'world' }; let { first: f, last: l } = obj; console.log（f);A．firstB．helloC．lastD．world
20、以下代码的输出结果是（） let obj = { first: 'hello', last: 'world' }; let { first: f, last: l } = obj; console.log（f);
A．first
B．hello
C．last
D．world
参考答案和解析
1，2，3
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