javascript - I recently encountered some problems when using echarts.js for projects!

Question

## When starting the local server, a strange error message was reported mistake!
echarts.js:18 Uncaught TypeError: o.slice is not a function
The echarts outline has appeared. I don’t know what other problems there are.
Local json data As shown in the picture

Answer 1

The values ​​in json are all strings, and the formats involved in the operation are different, resulting in operation errors.

Answer 2

Do you dare to post the code better and show the options? The following should be wrong, right?

Answer 3

Json string format problem