JavaScript

The story so far

In the last lesson, we looked at function parameters. Parameters let you reuse a function for different purposes. Check this out:

<button onclick="BetterPiggyBank.addCoin(0.01)" ...
<button onclick="BetterPiggyBank.addCoin(0.05)" ...
<button onclick="BetterPiggyBank.addCoin(0.10)" ...
<button onclick="BetterPiggyBank.addCoin(0.25)" ...

They all call the same function:

BetterPiggyBank.addCoin = function(amount) {
  //Do something with amount.
}

Arguments can be strings

amount is a number. So…

bc.

Most projects have coding standards. They make code look the same in every file, making it predictable, and easy to read.

We'll use some basic coding standards for HTML, CSS, and JS.

HTML

Indenting

A standard we'll follow is indentation by four spaces. When a tag is inside another tag, use indenting to make containership clear. For example:

<div id="output-container" class="hide-on-load">
    <p>I have a bracelet. It says:</p>
    <p>What would <span id="character">Scooby Doo</span>?</p>