SOURCE

class Base{
    constructor(config) {
       if(config!=null){
           this.id = config.id;
           this.parent = config.parent;
           this.dom_parent = config.dom_parent;
       }
    }
    id=null;
    name=null;
    parent = null;
    dom_parent = null;
    childs = null;
    
}

var base = new Base({dom_parent:$("body")});
console.log(base);
console.log("=====",base.dom_parent.html());

<div id="test1">3321</div>

#test1{
    color: #666;
}