A button has an argument named onclick whose value is a Callback, a snippet of imperative application logic to be executed when the event occurs. In this particular case two things happen.

按钮拥有名为onclick的参数，它的值是Callback，当事件发生的时候，就会执行一段命令式的应用程序逻辑。

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So the study on the imperative mode is worth its value not only in the theory but also in the Japanese teaching.

因此祈使语气研究不仅在理论上具有探讨价值，在实际日语教学中也具有很重要的应用价值。

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It is imperative that value of scientific rationality be researched and its morals be questioned, thus guiding mankind's effort in the 21st century.

对科学理性的价值考量、追问科学理性的德性归宿已经提上历史日程，并昭示着21世纪人类努力的方向。

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Because of the whip of the shareholder value imperative, people bend the rules or break them or change them to make things happen.

FORBES: How To Fix Government Contracting For Good

More importantly, at the end of the day, what makes these companies work despite the rules is the imperative of shareholder value creation.

FORBES: How To Fix Government Contracting For Good

Hyundai's Woong-Chul Yang said the move was "imperative to secure long-term competitiveness" and to help "enhance our brand value".

BBC: Hyundai and Kia appoint Schreyer to group design role