文章标签较多，可在侧边栏的目录中快速定位~
{
"data": { "values": [
{"tags": "chemistry", "count": 1 }
, {"tags": "math", "count": 2 }
, {"tags": "biology", "count": 1 }
, {"tags": "poem", "count": 7 }
, {"tags": "Chinese", "count": 19 }
, {"tags": "life", "count": 6 }
, {"tags": "informatics", "count": 2 }
, {"tags": "sundry", "count": 3 }
, {"tags": "github", "count": 2 }
] },
"encoding": {
"y": {"field": "tags", "type": "nominal"},
"x": {"field": "count", "type": "quantitative" }
},
"mark": "bar"
}