JSON返回多列，但所有值均作为单个字符串。 如何从数组中获取匹配的键值？

Question

Here's my problem, I make an ajax call, get a response:

$.getJSON('fpCustom.cfc?method=getSysCounts',function(data){buildChart(data);});

I get a JSON reponse. Raw result:

{"COLUMNS":["ABC","DEF","GHI"],"DATA":[[11,27,4]]}"

When I ask for COLUMN[0] , I get correct value: 'ABC' , but when I ask for DATA[0] , I get the whole DATA string: 11,27,4 . I think it probably has to do with the double square bracket, but don't know how to fix that.

How do I get DATA[0] , which should be 11 ?

Answer 1

For the JSON:

{"COLUMNS":["ABC","DEF","GHI"],"DATA":[[11,27,4]]}"

The property DATA is an array of arrays.

Consider it like this: DATA = [a, b, c] , where a , b and c are variables. The thing is that your a is another array, just as DATA is.

This way DATA[0] , the first element of the DATA array, is an array.

How do I get DATA[0] , which should be 11 ?

The value you want is in: DATA[0][0] :

Because:

DATA[0] -> [11,27,4]

Then:

DATA[0][0] -> 11
DATA[0][1] -> 27
DATA[0][2] -> 4

Answer 2

{"COLUMNS":["ABC","DEF","GHI"],"DATA":[[11,27,4]]}"

In COLUMNS is single dimentional array and DATA is two dimentional array so you have to access value of DATA[i][j]

check example