Example 1: convert string to object javascript var mystr = '{ "hello":"world" }' // NB: Has enclosing "" var myobj = JSON.parse(mystr); Example 2: Javascript object to JSON string var person={"first_name":"Tony","last_name":"Hawk","age":31}; var personJSONString=JSON.stringify(person); Example 3: convert data into json format in javascript Use the JavaScript function JSON.parse() to convert text into a JavaScript object: var obj = JSON.parse('{ "name":"John", "age":30, "city":"New York"}'); Example 4: javascript parse json const json = '{ "fruit": "pineapple", "fingers": 10 }'; const obj = JSON.parse(json); console.log(obj.fruit, obj.fingers); Example 5: convert string to object javascript str = "firstName:name1, lastName:last1"; // NB: No enclosing "" obj = eval('({' + str