String to JSON Array

Question

I have the below JSON object array which I get back from the server. However while the server sends back the response the data is enclosed in "" and that then makes the javascript function thing this is a String and not an Array.

"[  
    [32.361346650846805,50.90932315437885],
    [32.36743646734031,50.95189517586323],
    [32.35467638118774,50.95876163094135],
    [32.342494619322636,50.904516635824166],
    [32.36279664436138,50.90039676277729],
    [32.380194752587755,50.899023471761666],
    [32.3648265962154,50.91481631844135],
    [32.361346650846805,50.90932315437885]
]"

I just need to get the String into an array and use a for loop to iterate in the set of elements in the array. However since it is being treated a string it is not possible to iterate using a for loop.

any help?

JSON.parse can be your friend...

Daniel A. White
– Daniel A. White

2018-08-01 16:55:01 +00:00
Commented Aug 1, 2018 at 16:55 — Daniel A. White
– Daniel A. White, Commented Aug 1, 2018 at 16:55
How are you getting this JSON from server? Via ajax?

mighty_dev
– mighty_dev

2018-08-01 16:55:55 +00:00
Commented Aug 1, 2018 at 16:55 — mighty_dev
– mighty_dev, Commented Aug 1, 2018 at 16:55
var result = JSON.parse(str)

Madhan Varadhodiyil
– Madhan Varadhodiyil

2018-08-01 16:56:00 +00:00
Commented Aug 1, 2018 at 16:56 — Madhan Varadhodiyil
– Madhan Varadhodiyil, Commented Aug 1, 2018 at 16:56
That is not JSON, it is a multidimensional array.

Joseph Webber
– Joseph Webber

2018-08-01 17:02:27 +00:00
Commented Aug 1, 2018 at 17:02 — Joseph Webber
– Joseph Webber, Commented Aug 1, 2018 at 17:02

Praveen Kumar Purushothaman · Accepted Answer · 2018-08-01 16:55:07Z

You just need to run this through JSON.parse(), which is supported by almost all the JavaScript parsers:

console.log(JSON.parse(`[  
    [32.361346650846805,50.90932315437885],
    [32.36743646734031,50.95189517586323],
    [32.35467638118774,50.95876163094135],
    [32.342494619322636,50.904516635824166],
    [32.36279664436138,50.90039676277729],
    [32.380194752587755,50.899023471761666],
    [32.3648265962154,50.91481631844135],
    [32.361346650846805,50.90932315437885]
]`));

Just beware that the JavaScript might not like having line-breaks in strings if you give them in source code. If the original string does have line-breaks, that's totally fine. That's why I have used a template literal here.

// Say you have your string here.
var str = `[  
    [32.361346650846805,50.90932315437885],
    [32.36743646734031,50.95189517586323],
    [32.35467638118774,50.95876163094135],
    [32.342494619322636,50.904516635824166],
    [32.36279664436138,50.90039676277729],
    [32.380194752587755,50.899023471761666],
    [32.3648265962154,50.91481631844135],
    [32.361346650846805,50.90932315437885]
]`;
// Convert to array.
var arr = JSON.parse(str);
// Loop throught the array.
for (var i = 0; i < arr.length; i++)
  console.log(arr[i]);

Collectives™ on Stack Overflow

String to JSON Array

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related