Which JavaScript event handler is triggered when a user clicks outside a specific input field?

The onblur event handler is triggered when an element loses focus, which happens when the user clicks outside of a specific input field. This is particularly useful for scenarios where you want to perform actions like validation or to save changes when a user finishes interacting with an input.

When a user interacts with an input field and then clicks anywhere else on the page, the input field "loses focus," thereby triggering the onblur event. This behavior allows developers to handle events that occur after the user has moved away from an input field, making it an ideal choice for managing user input effectively.

Other options, while related to user interactions, do not specifically capture the scenario of focusing on an element and then losing that focus upon clicking outside it. For instance, onfocus activates when the input field gains focus, onclick is triggered when the field is clicked directly, and onchange fires when the value of the input field changes. Thus, onblur stands out as the correct choice for this specific action.