Question

Which is the preferred testing nowadays for scripting?

(a) Software testing

(b) Feature testing

(c) Blackbox testing

(d) Whitebox testing

I got this question in semester exam.

The origin of the question is Error Handling topic in portion Document Object Model and Event Handling in Javascript of JavaScript

Answer 1

Right choice is (b) Feature testing

The explanation is: The “browser-sniffing” approach is problematic because it requires constant tweaking as new browsers and new versions of existing browsers are introduced. Today, feature testing is preferred rather than making assumptions about particular browser versions and their features, you simply test for the feature (i.e., the method or property) you need.