ncatalin
2/23/2018 - 4:49 PM

Data Types in JavaScript

Modern JavaScript From The Beginning from Brad Traversy

index.html
content_copyfile_download
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>JavaScript Sandbox: Section 2</title>
</head>
<body>
  <h1>JavaScript Sandbox: Section 2</h1>
  
  <script src="app.js"></script>
</body>
</html>
app.js
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// var, let, const

// var name = 'John Doe';
// console.log(name);
// name = 'Steve Smith';
// console.log(name);

// // Init var
// var greeting;
// console.log(greeting);
// greeting = 'Hello';
// console.log(greeting);

// // letters, numbers, _, $
// // Can not start with number

// // Multi word vars
// var firstName = 'John'; // Camel case
// var first_name = 'Sara'; // Underscore
// var FirstName = 'Tom'; // Pascal case
// var firstname;

// LET
// let name;
// name = 'John Doe';
// console.log(name);
// name = 'Steve Smith';
// console.log(name);


// CONST
// const name = 'John';
// console.log(name);
// Can not reassign
// name = 'Sara';
// Have to assign a value
// const greeting;

const person = {
  name: 'John',
  age: 30
}

person.name = 'Sara';
person.age = 32;

// console.log(person);

const numbers = [1,2,3,4,5];
numbers.push(6);

console.log(numbers);