Import an array using ajax

Question

I have a very simple 2D array in a file called synergy_data.json:

[
['2014-08-19',  2956],
['2014-07-19',  2038],
['2014-06-19',  1285],
['2014-05-19',  1383],
['2014-04-19',  1256],
['2014-03-19',  822],
['2014-02-19', 644],
['2014-01-19',  504],
['2013-12-19',  438],
]

I'm trying to call up that data using ajax:

data=[]
$.ajax({
    url: "/marquee/synergy_data.json",
    async: false,
    success: function(resultData) {
        data = resultData;
    }
});
console.log(data)

But the console only spits out "[]"

What am I doing wrong?

***Solution A big thanks to @Quentin for solving this for me. I had two fatal flaws with my JSON: 1) I used single quotes and 2) I had an extra comma. I'll be sure to use JSONLint to check my arrays in the future! (I also removed the "async:false" for good measure.)

Don't use async:false, do the logic inside the callback or simply return a jQuery deferred and handle the callback later. — elclanrs
– elclanrs, Commented Aug 31, 2014 at 8:03

Quentin · Accepted Answer · 2014-08-31 08:19:55Z

3

Your JSON is invalid. The success function won't fire. The error function isn't defined. You end up accessing the array you originally assign to data and not the one from the JSON.

Strings in JSON must be quoted using " characters. ' are not acceptable.

Commas are used to separate items in an array, not terminate them. Remove the trailing comma.

edited Aug 31, 2014 at 8:19

answered Aug 31, 2014 at 8:07

Quentin

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7 Comments

Royi Namir Over a year ago

ouch. should have seen that. +1.

Royi Namir Over a year ago

p.s. , would line breaks in json file would be 100% ok ?

Quentin Over a year ago

Line breaks in JSON are fine so long as they aren't in the middle of strings.

Brandon Meredith Over a year ago

Hey @Quentin, thanks for your answer, but I tried that, and it didn't work. I tried it with apostrophes, with double quotes, without quotes, and by replacing the dates with numbers. Still doesn't work. (But I'll use quotes in the future.)

Quentin Over a year ago

You had another validation error. You should probably stop writing JSON by hand, or at least use a tool like JSON Lint.

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