ES6对象构建及其方法和比较

Posted 2021-01-06 neryxj

let name=‘jin‘;
let skill=‘web‘;
//ES6允许我们用变量的形式赋值
let obj={name,skill};
console.log(obj);

//key值的构建
let key="skill";
var obj1={
    [key]:‘web‘
}
console.log(obj1);

//es5就有的自定义对象方法
 let obj2={
     add:function(a,b){
         return a+b;
     }
 }
 console.log(obj2.add(1,2));

 //is()
let obj3={name:‘tanhua‘};
let obj4={name:‘tanhua‘};
console.log(obj3.name===obj4.name);
// 下面是es6的方法
console.log(Object.is(obj3.name,obj4.name));
console.log(+0===-0);
// ===同值相等,is严格相等
console.log(NaN===NaN);
//对象比较
console.log(Object.is(+0,-0));
console.log(Object.is(NaN,NaN));

//assign合并对象
let a={a:‘tanhua‘};
let b={b:‘xianhua‘};
let c={c:‘web‘};
let d=Object.assign(a,b,c);

console.log(d);