Programming Basics: Intro to Arrays with Javascript

Показать описание

Now things are getting interesting. This lesson is about arrays. We know how to set a variable equal to one value. What if we’ve got a bunch of values that go together? That’s where arrays come in.

Arrays are basically lists of different values, they can be a mix of strings, numbers, or boolean values, pretty much anything. The thing to remember is each value is associated with a number, but the first value isn’t one, we start with zero. So the array counts up or is indexed from zero to however many values you want to stick in it, there is no limit.

We use these numbers to put stuff into the array and pull stuff out. Let’s create an array like this:

Javascript uses square bracket to indicate an array. This array contains my codebabe stats, measurements of course, then my operating systems of choice, and favorite programming language.

You can see that it’s easy to mix integers and strings in an array. Array values get assigned numbers automatically. The thing to remember is that they start with zero. So my first measurement would be numbered zero.

But let’s say I wanted my measurements to be their own array. No problem. We can just wrap those numbers in square brackets, now we have an array within an array. An inception array.

If we log the array, go back and refresh the browser, we’ll see the values printed out, plus the values of the new array value within babe stats.

What if we wanted to grab something out of the measurements array now? We could do that by just adding another set of square brackets. Say you want to grab my waist, we just do console log babe stats zero and then one. Zero because the array values start with zero and one for the second value of the measurements array!

What if we wanted to add something to the array? To do this we need to use the javascript method "push", like this:

That would add another value to my babe stats. A method is another word for function in Object oriented programming lingo. You’ll have to watch another codebabes course on object oriented programming for that explanation. For now just take our word for it. If we log the array again we'll see the value that was pushed appended to the end.

Ok good work, you guys will get the hang of it. Next we’ll talk about loops, which go together with arrays like tantric sex and oil!

Рекомендации по теме

Комментарии

I love the values of array[0] and array[1]

subhambiswas

This is exactly what my teacher was lacking (u know what m talking about)

shubsodhi

I am mechanical engineering student but come here to learn computer science engineering

kunalsoam

Best course I've ever seen! Amazing concepts! kkk
Congratulations girls!

ps: next time the array could be your phone number

markmessa

hahahaha this channel is awesome, programming will be even more fun now XD

dwighsonPavion

hope i can start a decent job with skills from this video!

kostakosta

it's impossible to consetrate to the array ... i see only (o)(o)

fylactos

Ah when she says "Say you wanna grab my waist" when talking about arrays..thats when you just take your eyes away from the code totally....lol really this is a cool way to learn to code. Code Babes rock!!!

pvallabhai

this is best site youtube channel final i can understand.

Krylon

U are soo good I want u to be my class teacher it's make me hard
(Working)

aryanchaudhary

I want to take these CodeBabes out for dinner so I can talk about web development

ryana-

Great pretty tutorial, really helped....

mesrop

Can you please tell me what is the window on the left? A notepad or...?

Frag_Limit

I am failing love with this babe more than What a nice way to learn #Subscribed

BacklogMehedi

I was bored to death learning JS from other sources, and am delighted to have stumbled on your channel! Love your irreverent and humorous approach to these dry topics, and you Codebabes make it all much easier on the eyes. Also glad you guys aren't intimidated by crybaby social justice warriors who are so quick to spring a self-righteous microboner and label this as "misogynistic". Kudos for taking their nonsensical circle-jerk in your stride! You know what's really misogynistic? Preventing girls from getting an education in places like Afghanistan and shit.
Argh hell, I'm a straight woman myself and I think Codebabes is a lot of fun! Of cos, I wouldn't complain if ya'll started hiring sexy men to teach me programming too haha. I've gone on long enough, hope you see this comment! Great job, looking forward to more content, stay renegade!

tooth