datatypeVariableMution.js

/*******
* Variable Mutation & Coercion
*  To mutate a variable once it has been defined means to alter its value.
*/

var firstname = 'john';
console.log(firstname);

//1.String Type
var lastname = 'smith';

//2.Number Type
var age = 28;
console.log(age);

//vaibale mution
age = 'rinto'
console.log(age);

var job;
job = 'teacher';

//type varibale coercion
consloe.log(fistname + lastname + 'age ' + age + teacher);

alert(fistname + lastname + 'age ' + age + teacher);

var lastname = prompt('enter your name');