JSON.parse()
When the data is received from web server, the data is always a string .So to change it to the object, JSON.parse() method is used.
Example
<html>
<body>
<script>
var obj = '{"name":"Jon", "age":20, "city":"Columbia"}';
var res = JSON.parse(obj);
document.write(res);
console.log(res);
</script>
</body>
</html>output
[object object]
{"name":"Jon", "age":"20", "city":"Columbia"}