The internal testing tool records the time it takes to open and fully display a page.

内部测试工具记录它打开并完全显示一个页面时所需的时间。

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For a Web application, developers often want to display the last request time on a page.

对于网络程序，开发员想要显示页面上的最新请求时间。

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The scripts would display, hide, move, create, and destroy document objects to create dynamic effects, but any time more data was needed from the server, the page would be replaced with a new one.

这些脚本将显示、隐藏、移动、创建和销毁文档对象以便实现动态效果，但是一旦需要从服务器获取更多数据，原页面就被新页面取代。

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