js 遍歷對象的幾種方法

var obj1 = {
        id:1,
        name : '成傑',
        age :20
}
for(let key  in obj1){
        console.log(key + '---' + obj1[key])
  }

 

 

const obj = {
            id:1,
            name:'成傑',
            age:20
    }
    Object.getOwnPropertyNames(obj).forEach(function(key){
        console.log(key+ '---'+obj[key])
    })