Converting a string to JSON object

How do you make JS think that a string is JSON ?

I have a function which only works if JSON object is passed to it. If I pass a string to it, with same format as JSON, it doesn't work. So I want to make that function think that the string passed to it is a JSON. The string is indeed in the JSON format.

I also tried the following. I inputted the string through Ajax , with "handle as" parameter as "JSON", and then when I passed the result to the function it works.

So I deduced the problem is not with the string. How do I convert this string to JSON? If i get same string through ajax request and then passing it to function works, whereas directly passing it doesn't work.

The string is as follows:

 { "data": [ { "id": "id1", "fields": [ { "id": "name1", "label": "joker", "unit": "year" }, {"id": "name2", "label": "Quantity"}, ], "rows": [ data here.... and closing braces.. 

9 Answers

var obj = JSON.parse(string); 

Where string is your json string.

You can use the JSON.parse() for that.

See docs at MDN

Example:

var myObj = JSON.parse('{"p": 5}'); console.log(myObj); 

var obj = jQuery.parseJSON('{"name":"John"}'); alert( obj.name === "John" ); 

link:-

I had the same problem with a similar string like yours

{id:1,field1:"someField"},{id:2,field1:"someOtherField"} 

The problem here is the structure of the string. The json parser wasn't recognizing that it needs to create 2 objects in this case. So what I did is kind of silly, I just re-structured my string and added the [] with this the parser recognized

var myString = {id:1,field1:"someField"},{id:2,field1:"someOtherField"} myString = '[' + myString +']' var json = $.parseJSON(myString) 

Hope it helps,

If anyone has a more elegant approach please share.

Simply use eval function.

var myJson = eval(theJsibStr); 

convert the string to HashMap using Object Mapper ...

new ObjectMapper().readValue(string, Map.class);

Internally Map will behave as JSON Object

var Data=[{"id": "name2", "label": "Quantity"}] 

Pass the string variable into Json parse :

Objdata= Json.parse(Data); 

Let's us consider you have string like

example : "name:lucy,age:21,gender:female"

function getJsonData(query){ let arrayOfKeyValues = query.split(','); let modifiedArray = new Array(); console.log(arrayOfKeyValues); for(let i=0;i< arrayOfKeyValues.length;i++){ let arrayValues = arrayOfKeyValues[i].split(':'); let arrayString ='"'+arrayValues[0]+'"'+':'+'"'+arrayValues[1]+'"'; modifiedArray.push(arrayString); } let jsonDataString = '{'+modifiedArray.toString()+'}'; let jsonData = JSON.parse(jsonDataString); console.log(jsonData); console.log(typeof jsonData); return jsonData; } let query = "name:lucy,age:21,gender:female"; let response = getJsonData(query); console.log(response);

`

JSON.parse() function will do.

or

Using Jquery,

var obj = jQuery.parseJSON( '{ "name": "Vinod" }' ); alert( obj.name === "Vinod" );