Arrays

Review

What is an array?

an array in the real world?

 var singers = ['Beyonce', 'Ariana', 'Britney'];

arrays have elements

 var singers = ['Beyonce', 'Ariana', 'Britney'];

elements have an index

 var singers = ['Beyonce', 'Ariana', 'Britney'];

 var singers = ['Beyonce', 'Ariana', 'Britney'];
 
 singers[0]; // what is this?

 var singers = ['Beyonce', 'Ariana', 'Britney'];
 
 singers.length // what is this?

practice in jsbin

console.log()

alert()

console.log()

console.log("Beyonce");

alert("Beyonce");

Exercises!

4444.io#34

Homework

1. Finish all the exercises at http://4444.io#34

2. Email your code to Alex (alexandraqin@gmail.com)

3. Finish the Codecademy lesson on arrays

Exit Ticket

What will these lines of code print?

var catSounds = [‘purr’, ‘meow’, ‘scratch’, ‘woof’, ‘i like milk’];

1. console.log(catSounds.length);

2. console.log(catSounds[1]);

3. console.log(catSounds[5]);