how to get json object data in javascript code example

Example 1: 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 2: key value json javascript

var jsonArray = '{"required":1, "minlength":2}'
var jsonParsedArray = JSON.parse(jsonArray);
for (key in jsonParsedArray) {
  if (jsonParsedArray.hasOwnProperty(key)) {
      console.log("%c "+key + " = " + jsonParsedArray[key],"color:cyan");
  }
}

Example 3: create a json object in javascript

var employee = {
  "firstName": firstName,
  "lastName": lastName
}

Example 4: json object

var myObj, x;
myObj = {"name":"John", "age":30, "car":null};
x = myObj.name;
document.getElementById("demo").innerHTML = x;