灵活的js代码

let stateObj = {a:1,b:3};
                   
let newObj = {b:13,c:4} ;
                   
stateObj = {...stateObj, ...newObj} ;
console.log(stateObj); 
// 输出 {a: 1, b: 13, c: 4}

let {a = 0} = {a:1,b:3} ;
a = a + 1 ;
console.log(a) ;   
// 输出2

//ES6 允许直接写入变量和函数，作为对象的属性和方法。这样的书写更加简洁。
const foo = ‘bar‘;
const baz = {foo};
console.log(baz);  

//输出{foo: "bar"}