npm ci performs a clean install of all existing dependencies, whereas npm install attempts to update current dependencies when possible
APIs in network. REST
mathjax. mathml(mathml upstream elsewhere?)
Deconstructing object. a, b, c = myObj; arrow functions can’t use "this"? .push in array to add to it.
js: "+" before variable to make it a number +"5.3" makes 5.3 + +"0xAA" makes 170 + uses the valueOf() method in an object, can define for custom stuff too.
webapis (where running async tasks are stored when in browser runtime + different name for node?
can use "this" in function, not just object. gets window? what about node?
"export" keyword. used for multiple files "import" rgddr "from"
static keyword for methods
rename h3 with eg do to "web api"
garbage collection
try catch
timer for code To see out of date.
npm outdatedUpdate minor versions.
npm updateUpdate major versions.
npm install <name>@latestAudit.
npm auditSee warnings for existing packages by installing them, either manually for each one, or by:
rm -rf node_modules/
npm installhow dynamic typing works. is it duck typed? implicit conversion?
if use "var", can be hoisted up out of bracket scope
semi colons are optional use strict + no octal numbers
+ passing arrays to functions. what is passed? reference ot first? length separately? Use of (...args) when defining a function. "arguments" is a keyword available in functions. Immediately Invoked Function Expression (IIFE). Anon function expression which is immediately called. Map; weakmap call and apply stack in js numbers passed by value (how are strings passed?)
can you use "const" in parameters?
dynamic so no need for generics
use strict + no duplicate parameter names in functions
currying and partial application in JS
js supports closures. data moved to heap (?)
linked lists in javascript: + concatenation + slice/filter + insert + pop + traverse + map + sort + reverse js: + repeating an array n times arrays in javascript: + concatenation + slice/filter + insert + pop + traverse + map + sort + reverse
use strict: + no defining properties more than once in objects * removes "delete" keyword * no escape characters
objects are passed to functions by reference
"class" keyword is syntactic sugar
"new" keyword for object constructor
"bind" keyword in js. bind function to object
js console: console.warn() console.error() console.time() console.timeEnd() console.table() JSON object, inc JSON.stringify
settimeout
callback queue
promise on async
task queue
event loop
async keyword when defining function. await keyword
two ways: + async + promises
multithreading discussion here?
nvm to manage multiple versions of node and npm. equiv to eg pyenv yarn as alt to npm page on npx
directly updating dom eg to change text, document.body.x = "hi" (is this right? check?) do similar for CSS? update the CSS? + cookie + user agent string + fingerprinting + cookies + user angent string (maybe later? contains info on layout). part of http window.document.querySelector() querySelectorAll() when have, can do addEventListener() links to js pages in html
can’t render unless stack clear? check dom: scroll event window.document (window object. document object a parameter of that) js inline in html
notes on m3u8
html + images + video + audio + get/post requests + pop up alerts
html5 + <video> + <audio> + <canvas> + changes to <a> (note in part of a, not html5)
iframes in html: frames?
pandoc