Regular online testing is a critical strategy in digital language learning. It serves as a means of self-assessment, allowing learners to gauge their progress and identify areas that need improvement. Online tests and quizzes provide immediate feedback, which is essential for reinforcing learning and adjusting strategies accordingly. Many digital language learning platforms incorporate periodic testing into their curriculum. These tests are often designed to assess various aspects of language proficiency, including vocabulary, grammar, listening, and reading comprehension. By regularly taking these tests, learners can track their progress over time and gain a clear understanding of their strengths and weaknesses. 

The instant feedback provided by online tests is invaluable. It helps learners to quickly identify mistakes and misunderstandings, allowing them to focus their studies on correcting these areas. This immediate correction process aids in the retention of correct information and prevents the reinforcement of errors. Online tests also simulate real-world language use scenarios, especially those that include listening and speaking components. They can help learners prepare for standardized language tests and real-life situations where they need to use the language. 

Another benefit is the flexibility and convenience of online testing. Learners can take tests at their own pace and in their own time, making it easier to fit language learning into a busy schedule. This flexibility ensures that testing can be a regular part of the learning process, rather than an occasional or disruptive event. Incorporating regular online testing into a digital language learning strategy is highly beneficial. It provides a clear metric for progress, offers immediate feedback for improvement, and helps learners stay focused and motivated on their language learning journey.