Example 2.1. A simple variable declaration

var foo = 'hello world';

Example 2.2. Whitespace has no meaning outside of quotation marks

var foo =         'hello world';

Example 2.3. Parentheses indicate precedence

2 * 3 + 5;    // returns 11; multiplication happens first
2 * (3 + 5);  // returns 16; addition happens first

Example 2.4. Tabs enhance readability, but have no special meaning

var foo = function() {
    console.log('hello');
};