Convert array formatted strings to object

Question

I got

[[["汽車","car","Qìchē",""]],[["名詞",["汽車","車","轎車","車輛","車廂"],[["汽車",["car","automobile","auto"],,0.26497361],["車",["car","vehicle","lathe","machine","rook","turn"],,0.21967085],["轎車",["car","bus"],,0.020115795],["車輛",["vehicle","car"],,0.013611027],["車廂",["car"],,0.0042828997]]]],"en",,[["汽車",[4],0,0,1000,0,1,0]],[["car",4,[["汽車",1000,0,0],["車",0,0,0],["轎車",0,0,0],["車輛",0,0,0],["車廂",0,0,0]],[[0,3]],"car"]],,,[["en"]],27]

this from google translator However I tried

JSON.parse(xhr.responseText);

It return an error Unexpected token

• sixFingers: Before answering, what you posted here is already parsed data, while JSON.parse expects a string (a quote delimited value).
• Linear Algebra fans: Because It types is string
• Barmar: WHere is this data coming from? As one of tha answers said, it's not valid JSON because of ,,0.21967085. If it's an API, you need to report the bug to them.
• sixFingers: Two things to notice here. This is a valid JS object (array, specifically), but not a valid json. That said, if this is a string then you should write it surrounded by quotes (just for clarity). Finally, if what you want is parse it to a js (not json) object, then an eval(xhr.responseText). Eval should be always avoided, but i use it here for brevity.

Answer 1

The problem is that this string contains multiple commas making your json invalid.

You could try to replace it for a single one before parsing

var x = '[[["汽車","car","Qìchē",""]],[["名詞",["汽車","車","轎車","車輛","車廂"],[["汽車",["car","automobile","auto"],,0.26497361],["車",["car","vehicle","lathe","machine","rook","turn"],,0.21967085],["轎車",["car","bus"],,0.020115795],["車輛",["vehicle","car"],,0.013611027],["車廂",["car"],,0.0042828997]]]],"en",,[["汽車",[4],0,0,1000,0,1,0]],[["car",4,[["汽車",1000,0,0],["車",0,0,0],["轎車",0,0,0],["車輛",0,0,0],["車廂",0,0,0]],[[0,3]],"car"]],,,[["en"]],27]'
 .replace(/,{2,}/g, ",") // 2 or more replace for 1
JSON.parse(x);

Or if you have access to whatever is sending this string fix the output.

• Barmar: I think he said it's coming from Google Translate.

Answer 2

First you should remove an extra [] brackets by replacing that.

ex,

[["汽車","car","Qìchē",""]]

should be:

["汽車","car","Qìchē",""]

EDIT: you can refer to this answer: Parse Google Translate Json C#

You should try:

var str = '[[["汽車","car","Qìchē",""]],[["名詞",["汽車","車","轎車","車輛","車廂"],[["汽車",["car","automobile","auto"],,0.26497361],["車",["car","vehicle","lathe","machine","rook","turn"],,0.21967085],["轎車",["car","bus"],,0.020115795],["車輛",["vehicle","car"],,0.013611027],["車廂",["car"],,0.0042828997]]]],"en",,[["汽車",[4],0,0,1000,0,1,0]],[["car",4,[["汽車",1000,0,0],["車",0,0,0],["轎車",0,0,0],["車輛",0,0,0],["車廂",0,0,0]],[[0,3]],"car"]],,,[["en"]],27]';
var objstr = $.parseJSON(str);

• Barmar: There's nothing wrong with double brackets, it's just an array containing another array.