es6(8)--对象

 //对象
 {
     //简洁表示法
     let o = 1;
     let k = 2;
     let es5 = {
         o:o,
         k:k
     };
     let es6 = {
         o,
         k
     };
     console.log(es5);
     console.log(es6);

     let es5_method={
         hello:function(){
             console.log('hello')
         }
     }
     let es6_method={
         hello(){
             console.log('es6 hello')
         }
     }
     es5_method.hello();
     es6_method.hello();

 }
 {
     //属性表达式
     let a='b';
     let es5_obj={
         a:'c'
     };
     let es6_obj={
         [a]:'c'//b:'c'
     }
     console.log(es5_obj)
     console.log(es6_obj)
 }
 {
     //新增API,Object.is就是===
     console.log('字符串',Object.is('abc','abc'),'abc'== 'abc')
     console.log('数组',Object.is([],[]),[]==[])
     //Object.assign浅拷贝
     console.log('拷贝',Object.assign({a:'a'},{b:'b'}))
     //
     let test ={k:123,o:456}
     for(let [key,value] of Object.entries(test)){
         console.log([key,value])
     }

 }
 //基本不支持
 {
     //扩展预算符...
     //let {a,b,...c}={a:'test',b:'kill',c:'ddd',d:'ccc'};

 }