The then method is used to handle a promise when it's fulfilled. It takes a callback function as a parameter. The callback function takes the resolved value as a parameter.
Let's see an example of how to use the then method to handle a promise when it's fulfilled.
If we run the above code, the output will be:
Here the launchSuccess variable is set to true, so the resolve method is called. A promise is fulfilled when the resolve method is called. Since the promise is fulfilled, the then method is called, and the resolved value is passed to the callback function. In this case, the resolved value is Rocket successfully launched!.
In the next lesson, we'll learn how to handle promises when they're rejected using the catch method.