A guide to handling JSON parsing in JavaScript when the value contains nested JSON data

Question

A guide to handling JSON parsing in JavaScript when the value contains nested JSON data

I am struggling with parsing this JSON object:

{ 
   "key1" : "value",
   "key2" : "{ "innerkey1": "value", "innerkey2": "value"}"
}

Here is an example of how I am trying to parse it:

var myData = JSON.parse(data);
$(document).ready(function() {
   var $grouplist = $('#groups');
   $('<li>' + myData.key1 + '</li>').appendTo($grouplist);
});

However, when I try to use JSON.parse, I keep getting a parse error in the console.

Here is a sample code that replicates the issue: https://jsfiddle.net/2L8dLtfq/

javascript json

Answer 1

Answer №1

The JavaScript interpreter has already done the parsing work for you, so there is no need to parse it again.

var data = { 
 "key1" : "value",
 "key2" : { "innerkey1": "value", "innerkey2": "value"}
};
jQuery(document).ready(function() {
    var $list = $('#groups');
   $('<li>' + data.key2 + '</li>').appendTo($list);
});

You can access the values directly using key names like data.key1 or data.key2. If key2 returns an object, you can access its properties by key name as well e.g. data.key2.innerkey1

jsFiddle Link

Answer 2

The JavaScript interpreter has already done the parsing work for you, so there is no need to parse it again.

var data = { 
 "key1" : "value",
 "key2" : { "innerkey1": "value", "innerkey2": "value"}
};
jQuery(document).ready(function() {
    var $list = $('#groups');
   $('<li>' + data.key2 + '</li>').appendTo($list);
});

You can access the values directly using key names like data.key1 or data.key2. If key2 returns an object, you can access its properties by key name as well e.g. data.key2.innerkey1

jsFiddle Link

Answer 3

Answer №2

Your input contains an additional quotation mark (") which is causing a syntax error.

{ "name" : "John", "age" : "{ "city": "New York", "country": "USA"} }
-----------------------------^ this is the issue

Answer 4

Your input contains an additional quotation mark (") which is causing a syntax error.

{ "name" : "John", "age" : "{ "city": "New York", "country": "USA"} }
-----------------------------^ this is the issue

A guide to handling JSON parsing in JavaScript when the value contains nested JSON data

Answer №1

Answer №2

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