The code `Object.assign({}, e, relatedTargetObj)` performs the following: 1. **`Object.assign` Function**:...

The code Object.assign({}, e, relatedTargetObj) performs the following:

1. Object.assign Function:

   • This method is used to copy the values of all enumerable own properties from one or more source objects into a target object. It returns the modified target object.

2. Usage of {} as Target Object:

   • An empty object {} is passed as the target object, meaning the function is creating a new object. The properties from the following source objects (in this case e and relatedTargetObj) will be merged into this new object.

3. Order of Sources:

   • The sources e and relatedTargetObj are listed sequentially. Properties from later sources (relatedTargetObj) are applied last, and if any property exists in both sources, the value from the last source overwrites the previous one.

4. What Happens Here:

   • Properties from the object e are copied into the new object.
   • Then, properties from the object relatedTargetObj are copied into the same new object. If relatedTargetObj has properties with the same keys as e, it will overwrite these in the new object.

5. Resulting Object:

   • The resulting object contains:
     • All unique properties from both e and relatedTargetObj.
     • Any properties in relatedTargetObj with the same keys as e will replace the corresponding properties from e.

Example:

const e = { a: 1, b: 2 };
const relatedTargetObj = { b: 3, c: 4 };

const result = Object.assign({}, e, relatedTargetObj);
// Result: { a: 1, b: 3, c: 4 }

Summary:

The code Object.assign({}, e, relatedTargetObj) creates a new object by merging the properties of e and relatedTargetObj. Properties in relatedTargetObj will overwrite any properties in e with the same keys. This is commonly used to create a merged object without modifying the original input objects.