1、变量申明,展开运算符
let defaults = { food: 'spicy', price: '20', ambiance: 'noisy'}let search = {...defaults, food: 'rich'}console.log(search)
{ food: 'rich', price: '20', ambiance: 'noisy' }
let defaults = { food: 'spicy', price: '20', ambiance: 'noisy'}let search = {food: 'rich', ...defaults}console.log(search)
{ food: 'spicy', price: '20', ambiance: 'noisy' }
使用展开运算符的时候,注意顺序