简易计时器

100%

简易计时器

✓ Published0🌍 Public

Last edited Mar 11, 2020

Created on Mar 11, 2020

This example shows a simple timer interface with a text input displaying elapsed seconds and buttons for start, stop, and reset. The timer updates every second using `setInterval`, toggling an `index` flag to control whether the count increments. Clicking “开始” sets the flag to true, “停止” sets it to false, and “清零” resets both the counter and displayed value. The code directly manipulates the DOM via `document.getElementById` and `value` properties, without using a framework or external libraries.

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A bare minimum HTML page.

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