rmcg.dev/notes.md

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2020-09-09 13:34:48 +02:00
# Notes
## Overview
---
Aim of this document is to make notes of various things as I encounter them. Consider it learning from working through specific challenges or other exercises. Probably should be in a note app, or a wiki, or something, but for now they are here.
Think of it as a combination of learning, and tips and tricks. They will start unorganised, and then should be put into some semblance of order; where that is possible.
## The Notes Themselves (unorganised)
---
* Now little difference between `<input type="submit">` and `<button>`.
* It used to be the case that IE6 didn't properly support it, so your website would look broken.
* By default `<button>` implies `type="submit"`
* A `button` can have child elements, an `<input type="submit">` can't. (**verify**)
* When using `em` the increases are compound, so if you have a `p`, inside a `div`, inside `body`. The `body` font size is set in `px`. The `div` and `p` both set a font size using `em` to set a relative size, then that relative size would be
* in `div`: body font size * font size em
* in `p`: div relative font size * p's font size in em
* ```css
body {
font-size: 20px;
}
div {
font-size: 2em; /* font size is 40px */
}
p {
font-size: 2em; /* font size in this div is now 80px */
}
```
* Random aside: can't carry on a list after putting a codeblock inside a list
* Found useful site for Regex writing / testing https://regex101.com
* this specific address has regex for email validation https://regex101.com/r/uP2oL7/1
* CSS - The "!important" rule should only be used as a last resort - nuclear option
* better to do elementName.className when wanting to temp add a class to override some css (like say a border color)
2020-09-09 13:34:48 +02:00
* Blah