merge two objects javascript

                                    /* For the case in question, you would do: */
Object.assign(obj1, obj2);

/** There's no limit to the number of objects you can merge.
 *  All objects get merged into the first object. 
 *  Only the object in the first argument is mutated and returned.
 *  Later properties overwrite earlier properties with the same name. */
const allRules = Object.assign({}, obj1, obj2, obj3, etc);

                                    Object.assign(target, sourceObj1, sourceObj2, ...);

                                    const a = { b: 1, c: 2 };
const d = { e: 1, f: 2 };

const ad = { ...a, ...d }; // { b: 1, c: 2, e: 1, f: 2 }

                                    let obj1 = { foo: 'bar', x: 42 };
let obj2 = { foo: 'baz', y: 13 };

let clonedObj = { ...obj1 };
// Object { foo: "bar", x: 42 }

let mergedObj = { ...obj1, ...obj2 };
// Object { foo: "baz", x: 42, y: 13 }

                                    var person={&quot;name&quot;:&quot;Billy&quot;,&quot;age&quot;:34};<br/>var clothing={&quot;shoes&quot;:&quot;nike&quot;,&quot;shirt&quot;:&quot;long sleeve&quot;};<br/><br/>var personWithClothes= Object.assign(person, clothing);//merge the two object<br/>