小编Ric*_*ick的帖子

var myObj = { propA: '', propB: [] }
var fatherObj = {
    childObj: null,
    init: function() {
        this.childObj = Object.create(myObj);
        this.childObj.propA = 'A';
        this.childObj.propB.push(2);
    }
}

var test = Object.create(fatherObj);
test.init();

console.log(myObj.propB.length);
console.log(test.childObj.hasOwnProperty('propA'));
console.log(test.childObj.hasOwnProperty('propB'));