关于ExtJS错误“例外被抛出且未被接住”问题

作者在 2011-06-28 13:20:14 发布以下内容

最近在使用ExtJS搭建网页界面过程中报出错误消息,IE中的提示如下:

  例外被抛出且未被接住,行19。。。。

  Firefox提示如下:

  uncaught exception: No center region defined in BorderLayout westpanel.

  根据IE的错误信息调试了老半天也没找到哪的毛病,本来就没多少的JS代码,硬是不知道问题出在哪。看了Firefox的提示才明白,意思就是说在layout为border的westpanel中没有定义center region。防止这样的报错就得把layout为border删了或者添加center region,显然如果这个panel没有子panel(items)的话完全没必要设成border layout。查了下ExtJS3.1.1 API documentation,关于border layout的提示有:

  1.Any container using the BorderLayout must have a child item with region:’center’. The child item in the center region will always be resized to fill the remaining space not used by the other regions in the layout.

  2.Any child items with a region of west or east must have width defined (an integer representing the number of pixels that the region should take up).

  3.Any child items with a region of north or south must have height defined.

  原来已经说得很清楚了,只是用得时候没注意啊。

  以后调试还是得多用Firefox的Firebug了

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