ECMAScript 6知识点总结 --- 解构赋值

• 数组

  let [a, b, c] = [1, 2, 3]
  
  let [a, [b, c]] = [1, [2, 3]]

  注意：左右两边结构格式要保持一致

• json

  let json = {name: 'cc', age: 18, job: 'coder'}
  let {name, age, job} = json
  console.log(name, age, job)
  // 'cc', 18, 'coder'

  let json = {name: 'cc', age: 18, job: 'coder'}
  let {name:n, age:a, job:j} = json
  console.log(n, a, j)
  // 'cc', 18, 'coder'

  解构时也可以给默认值

  let [a, b, c='默认值'] = [1, 2]
  console.log(a, b, c)
  // 1, 2, '默认值'