Listing 9 shows the complete action class code, not just the segment that changes the project description, so we can learn about some utility methods created for the second revision of the plugin.

清单9显示了完整的操作类代码，不只是改变项目描述的片断，这样我们可以学习为第二版插件创建的一些实用方法。

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This popular plugin provides cross-browser compatible methods of dealing with the dimensions of page elements.

这个流行的插件提供了一些跨浏览器兼容的方法，来处理页面元素的尺寸问题。

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For example, a handy plugin is the Structure Browser, which shows a collapsible tree of functions, classes, and methods that can be used to navigate or show context within a large module.

例如，Structure Browser就是一个有用的插件，它用一个可折叠的树来显示函数、类和方法，这样就可以浏览或显示一个大模块中的上下文。

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