js中Refleact方法使用

<script>
    const duck = {
       name: "贾维斯",
       clor: "red",
       greeting: function() {
          console.log(`my name is ${this.name}`);
       }
    }
    console.log(Reflect.has(duck,"name"));
    console.log(Reflect.ownKeys(duck,"name"));
    Reflect.set(duck,"sex","男")
    console.log(duck);
</script>