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lzcdev / Daily-Front-End-Questions

每日前端面试题、技巧等知识点，记录自己的成长过程
MIT License
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输出什么？（字符串解构） #15

Open lzcdev opened 5 years ago

lzcdev commented 5 years ago

1.

let { length } = 'hello'
console.log(length);

2.

let { length: len } = 'hello'
console.log(len);
console.log(length);

3.

let { len } = 'hello'
console.log(len);
lzcdev commented 5 years ago
  1. 5
  2. 5 ReferenceError: length is not defined
  3. undefined