Javascript: simple design of stopwatch timer _ javascript skills

This article mainly introduces the simple design of the stopwatch timer in javascript. the stopwatch will contain two buttons and a text box for displaying the time. the minimum unit is 0.01 seconds when you click the Start button, at this time, click the button again to stop Timing. the text box shows the elapsed time. if you need it, refer to the example in this article to describe the implementation code of a simple stopwatch timer designed by javascript. Share it with you for your reference. The details are as follows:
The running effect is as follows:

The code is as follows:

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