javascript convert string to data

Question

I have JavaScript code below.

var data = "[{"PR_ID":23096,"P_ID":23014},{"PR_ID":33232,"P_ID":23014},{"PR_ID":33308,"P_ID":23014},{"PR_ID":33309,"P_ID":23014}]";

I need convert the string to an data by delete the "" surrounding the array stored as "data" in JavaScript so after convert it suppose like below:

var data = [{"PR_ID":23096,"P_ID":23014},{"PR_ID":33232,"P_ID":23014},{"PR_ID":33308,"P_ID":23014},{"PR_ID":33309,"P_ID":23014}];

How to make the convert?

The first line is not a valid JS litteral string ... it would need mixed "/' quotes — Alex K.
– Alex K., Commented Jun 23, 2015 at 13:48
you might be looking for eval(). something like data = eval(data); — dragonjet
– dragonjet, Commented Jun 23, 2015 at 13:48
The first line is not valid JS syntax, so you can't use JS to convert what's in data because the code won't even run. You'd need to fix the server-side code to return something valid. — nnnnnn
– nnnnnn, Commented Jun 23, 2015 at 13:52
Well then please update your question to show that properly. The first line of code shown is not valid JS. — nnnnnn
– nnnnnn, Commented Jun 23, 2015 at 13:55

Endre Simo · Accepted Answer · 2015-06-23 13:50:23Z

3

To convert a JSON object to Javascript object use:

var data = '[{"PR_ID":23096,"P_ID":23014},{"PR_ID":33232,"P_ID":23014},{"PR_ID":33308,"P_ID":23014},{"PR_ID":33309,"P_ID":23014}]';
JSON.parse(data);

But first change the double quote to single quote, otherwise the JSON object wont be a valid JSON.

After this you can walk the array in the following way:

var jsonParsed = JSON.parse(data);

for(var val in jsonParsed) {
   if(jsonParsed.hasOwnProperty(val)) {
      // do something with the values
   }
}

answered Jun 23, 2015 at 13:50

Endre Simo

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3 Comments

Deep in Development Over a year ago

I need using mustache to populate it. like var rendered = Mustache.render(template, data); even i pass in JSON.parse(data); as the data, it still not work, untill I delete the "" surrounding the array stored as "data" in JavaScript. but how to remove "" ?

Endre Simo Over a year ago

But why you are not sending in the correct format from backend?

Endre Simo Over a year ago

You need to resolve the issue before you send to javascript, otherwise JS will throw you an error

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