Extracting values with Javascript

Question

I have a variable called "result",

var result;

that result value is equal to following value, please presume that is just a string :)

---------result value -----------

for (;;);{
     "send":1,
     "payload":{
         "config":{
             "website":"",
             "title":"welcome to site",
             "website-module":1313508674538,
             "manufatureid":"id.249530475080015",
             "tableid":"id.272772962740259",
             "adminid":100002741928612,
             "offline":null,
             "adminemail":"[email protected]",
             "adminame":"George",
             "tags":"web:design:template",
             "source":"source:design:web",
             "sitelog":[],
             "errorlog":0,
             "RespondActionlog":0,
             "map":null
           },
        "imgupload":""
     },
     "criticalerror":[0],
     "report":true
 }

---------result value------------

From that value, I would like to extract tableid which is "id.272772962740259" with classic Javascript.

How can I extract the code, please let me know how can i do with simple javascript, please don't use Jquery, all I just need is simple javascript.

Is "result" a string containing that code? And are you using jQuery or any other library? Could make this a lot easier... — Robin Winslow
– Robin Winslow, Commented Aug 16, 2011 at 15:51
result value is respond from Ajax respond. All I just need is to extract the value of tableid and assign to another variable. — XML guy
– XML guy, Commented Aug 16, 2011 at 15:52
please, presume that the result is a string. we can't remove "for (;;);" — XML guy
– XML guy, Commented Aug 16, 2011 at 16:06

Tejs · Accepted Answer · 2011-08-16 15:52:44Z

2

You can simply evaluate the value of the variable to obtain the values. However, please note that your current value is not valid JSON; that for(;;); at the beginning of the value invalidates the format. Remove that, and you can do this:

var object = eval('(' + resultMinusThatForLoop + ')');

alert(object.payload.config.tableid);

answered Aug 16, 2011 at 15:52

Tejs

41.4k10 gold badges71 silver badges89 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Jamie Dixon Over a year ago

Just got there before me. It's worth noting that future versions of ECMAScript may contain a JSON parser however right now, eval seems to be the best solution (other than using a JSON parse in a framework).

Liam · Accepted Answer · 2011-08-16 15:57:48Z

1

If that data is a string the parse it with a JSON parse. The following should get the value you want

JSON.parse(result).payload.config.tableid; // "id.272772962740259"

Edit: though, as Tejs says, the for(;;) invalidates the string and stops it from being parsed. If you can remove that, do.

answered Aug 16, 2011 at 15:57

Liam

4,1253 gold badges34 silver badges47 bronze badges

Comments

Hank Gay · Accepted Answer · 2011-08-16 15:57:49Z

0

You need to remove the empty for loop, then parse the string. DO NOT use eval; most modern browsers provide built-in JSON-parsing facilities, but you can use json2.js if yours does not. Assuming that you assign the results of parsing the JSON to result, you should be able to get that value using result.payload.config.tableid.

You should probably read a good JS reference. JavaScript: The Good Parts or Eloquent JavaScript would be a good choice.

answered Aug 16, 2011 at 15:57

Hank Gay

72.4k36 gold badges164 silver badges224 bronze badges

Comments

Community · Accepted Answer · 2017-05-23 12:04:18Z

0

If result is a javascript object and not a string, you can just use 'result.payload.config.tableid'.

If it is not, how do you get the AJAX result? Are you using XmlHttpRequest directly? Most libraries will give you a javascript object, you might be missing a flag or not sending the response back with the right content type.

If it is a string and you want to parse it manually, you should use a JSON parser. Newer browsers have one built in as window.JSON, but there is open source code for parsing it as well.

var obj = JSON.parse(result);
alert('tableid is ' + obj.payload.config.tableid);

edited May 23, 2017 at 12:04

CommunityBot

11 silver badge

answered Aug 16, 2011 at 16:06

Jason Goemaat

29.3k15 gold badges89 silver badges119 bronze badges

1 Comment

XML guy Over a year ago

i am using XmlHttpRequest in order to get that result.

Collectives™ on Stack Overflow

Extracting values with Javascript

4 Answers 4

1 Comment

Comments

Comments

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

1 Comment

Comments

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related