| Device | Price (USD) | Subscription | Battery Life / Charge | Core Metrics | Data Export | Key Limitation | Fun Fact |
|---|---|---|---|---|---|---|---|
| Oura Ring Gen3 | 299 – 549 | Req. $5.99/mo | 4–7 d, wireless dock (~80 min) | HR, HRV, temp, sleep, readiness | CSV / API (members) | No display; sub cost | Worn by NBA “bubble” for COVID early-warning |
| Ultrahuman Ring Air | 349 | None | 4–6 d, dock (~3 h) | HR, HRV, temp, sleep, recovery, SpO₂ | Limited for now | N |
{
"count": 1126,
"next": "https://pokeapi.co/api/v2/pokemon/?offset=5&limit=5",
"previous": null,
"results": [
{
"name": "bulbasaur",
"url": "https://pokeapi.co/api/v2/pokemon/1/"
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| [ | |
| { | |
| "rank": 1, | |
| "name": "New York City", | |
| "state": "NY", | |
| "population": 8177020 | |
| }, | |
| { | |
| "rank": 2, | |
| "name": "Los Angeles", |
| character | description | example |
|---|---|---|
. |
Wildcard - matches any character | /c.t/.test('cat'); => true/./.test(''); => false |
^ |
Boundary - beginning of string | /^big/.test('big dog'); => true/^c/.test('abc'); => false |
$ |
Boundary - end of string | /dog$/.test('big dog'); => true/a$/.test('abc'); => false |
+ |
Character occurs 1 or more times | /ca+t/.test('caaat'); => true/ab+c/.test('ac'); => false |
* |
Character occurs 0 or more times | /ca*t/.test('ct'); => true/a*/.test(''); => true |
| |
Or (this or that) | /a|b/.test('b'); => true/at|og/.test('dog'); => true |
\x |
Hex codes (\x and then 2 digits, i.e. \x21 == '!') |
/\x41/.test('a'); => true |
( ) |
Parens - groups logic together | /(^a)|(^b)/.test('ax'); => true |
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| // to load jQuery into any website's console | |
| // paste the following into console | |
| var script = document.createElement('script');script.src = "https://code.jquery.com/jquery-3.4.1.min.js";document.getElementsByTagName('head')[0].appendChild(script); | |
| /** | |
| * | |
| * pro-tip: paste the following into bookmark |
- Go to https://learn.co/assignments
- Clone the repository to your computer (do not fork) following these instructions:
- On the project repository, click the green button: "Clone or Download"
- Copy the URL provided
- In your terminal:
git clone <copied URL> cdinto the project directory
- Checkout a new branch
git checkout -b
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| class Node { | |
| constructor(value) { | |
| this.value = value; | |
| this.next = null; | |
| } | |
| } | |
| class LinkedList { | |
| constructor() { | |
| this.head = null; |
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| [{ | |
| "name": "Adam", | |
| "class": "man", | |
| "textClass": "emphasis", | |
| "marriages": [{ | |
| "spouse": { | |
| "name": "Megan", | |
| "class": "woman" | |
| }, | |
| "children": [{ |