Salesforce JavaScript Developer Practice Exam

In the given code snippet, the `showMessage` method calls `this.names.forEach`, which executes a callback function for each element in the `names` array. However, it's important to note how `this` behaves within that callback function.

In JavaScript, the value of `this` inside a regular function (as opposed to an arrow function) does not refer to the object that invokes the method (`message` in this case). Instead, it refers to the global object or `undefined` in strict mode when the function is called in a different context, like the way it is within the `forEach` method.

As a result, inside the callback of `forEach`, `this.hello` will not refer to `message.hello`. Instead, it will evaluate to `undefined`, leading to the output being `undefined` concatenated with each name. So, when "Sue" and "Joe" are iterated over, the output becomes:

- For "Sue": `undefined Sue`

- For "Joe": `undefined Joe`

This leads to the conclusion that when `message.showMessage()` is invoked, the final output will be `undefined Sue` and `undefined Joe`, reflected accurately in the option indicating both outputs