使用多行 JSON 填充图表时 Google 图表中的工具提示

Question

我正在使用 stackoverflow 使用 Google 制作自己的图表。 我读过这个： Tooltip in Google Chart while populating chart using JSON 并根据这个“指令”，我尝试用自定义工具提示为自己制作一个多折线图，但没有结果。

我尝试过类似的方法

{"cols": [{"id": "", "label": "Date", "type": "string"},
    {"id": "", "label": "price", "type": "number"},
    {"id": "", "role": "tooltip", "type": "string", "p" : { "role" : "tooltip" } } 
    {"id": "", "label": "price2", "type": "number"},
    {"id": "", "role": "tooltip", "type": "string", "p" : { "role" : "tooltip" } } 
],
"rows": [
    {"c":[{"v": "Apr 24th","f":"null"}, {"v": 56000,"f":"56000"}, {"v": "24 April, Price - 56000, Seller-abcd"}, {"v": 50000,"f":"56000"}, {"v": "24 April, Price - 56000, Seller-abcd"}]},
    {"c":[{"v": "May 3rd","f":"null"}, {"v": 68000,"f":"68000"}, {"v": "3 May, Price - 68000, Seller-abcd"}, {"v": 56000,"f":"56000"}, {"v": "24 April, Price - 56000, Seller-abcd"}]},
    {"c":[{"v": "May 13th","f":"null"}, {"v": 50400,"f":"50400"}, {"v": "23 May, Price - 50000, Seller-abcd"}, {"v": 56000,"f":"56000"}, {"v": "24 April, Price - 66000, Seller-abcd"}]}
]}

这有什么问题？我想指定：单行（复制上面链接的代码）这工作正常，我有我的好图表：D 谁能帮帮我？

Answer 1

您在第一个工具提示列之后缺少一个逗号：

"cols": [
    {"id": "", "label": "Date", "type": "string"},
    {"id": "", "label": "price", "type": "number"},
    {"id": "", "role": "tooltip", "type": "string", "p" : { "role" : "tooltip" } }, // <--- need a comma here
    {"id": "", "label": "price2", "type": "number"},
    {"id": "", "role": "tooltip", "type": "string", "p" : { "role" : "tooltip" } } 
]