EXTJS3.0如何画柱状图答:fields:['name', 'visits', 'views'],data: [{name:'Jul 07', visits: 245000, views: 3000000},{name:'Aug 07', visits: 240000, views: 3500000},{name:'Sep 07', visits: 355000, views: 4000000},{name:'Oct 07', visits: 375000, views: 4200000},{name:'Nov 07', visits: ...