摘要:
将 b 设置成 a 得原型链 let a = {name:"张三"} let b = {name:"王二麻子"} console.log(a) console.log(b) console.log(b.__proto__==a.__proto__) Object.setPrototypeOf(a,b 阅读全文
摘要:
let a = new Set([1, 23, 5, 6, 7]) let b = new Set([1, 5, 2, 3]) console.log(a.has(1)); //查找 //并集 console.log([...a, ...b]); //交集 console.log( new Set( 阅读全文