Convert JS object to JSON string

Question

If I defined an object in JS with:

var j={\"name\":\"binchen\"};

How can I convert the object to JSON? The output string should be:

Answer 1

if you want to get json properties value in string format use the following way

var i = {"x":1}

var j = JSON.stringify(i.x);

var k = JSON.stringify(i);

console.log(j);

"1"

console.log(k);

'{"x":1}'

Answer 2

You can use JSON.stringify() method to convert JSON object to String.

var j={"name":"hello world"};
JSON.stringify(j);

To convert this string back to json object, you can use JSON.parse() method.

Answer 3

if you have a json string and it's not wrapped with [] then wrap it up first

var str = '{"city": "Tampa", "state": "Florida"}, {"city": "Charlotte", "state": "North Carolina"}';
str = '[' + str + ']';
var jsonobj = $.parseJSON(str);

OR

var jsonobj = eval('(' + str + ')');
console.log(jsonobj);

Answer 4

Check out updated/better way by Thomas Frank:

• JSON stringify revisited

Update May 17, 2008: Small sanitizer added to the toObject-method. Now toObject() will not eval() the string if it finds any malicious code in it.For even more security: Don't set the includeFunctions flag to true.

Douglas Crockford, father of the JSON concept, wrote one of the first stringifiers for JavaScript. Later Steve Yen at Trim Path wrote a nice improved version which I have used for some time. It's my changes to Steve's version that I'd like to share with you. Basically they stemmed from my wish to make the stringifier:

• handle and restore cyclical references
• include the JavaScript code for functions/methods (as an option)
• exclude object members from Object.prototype if needed.

Answer 5

All current browsers have native JSON support built in. So as long as you're not dealing with prehistoric browsers like IE6/7 you can do it just as easily as that:

var j = {
  "name": "binchen"
};
console.log(JSON.stringify(j));

Answer 6

convert str => obj

const onePlusStr = '[{"brand":"oneplus"},{"model":"7T"}]';

const onePLusObj = JSON.parse(onePlusStr);

convert obj => str

const onePLusObjToStr = JSON.stringify(onePlusStr);

References of JSON parsing in JS:
JSON.parse() : click
JSON.stringify() : click