javascript

dz / javascript

Summary

things related to the javascript programming language

Subgraphs

• bcrypt
• regex

Node Tree

• await
• bcrypt
  • source
    • node-gyp
• bind
• class_expression
• dom_event_delegation_stack_overflow
• error
• IIFE
• js_objects
• js_questions
  • how_event_delegation_works
  • simple_rules_to_this
• mdn_prototype_chain
  • instanceof
• node-gyp
• regex
  • lookahead_assertion
  • regexp
• rest_parameter
• spread_syntax
• static
  • static_initialization_blocks
• template_literals
  • tagged_templates
• the_core
• this
• truthiness
  • coercion
    • python/boolean_value_coercion
    • type_coercion_mdn

Nodes

js_questions
content	Front End Interview: JavaScript Questions
children	simple_rules_to_this (found via), how_event_delegation_works (found via)
hyperlink	https://www.frontendinterviewhandbook.com/javascript-questions

how_event_delegation_works
content	how event delegation works
parents	js_questions
hyperlink	https://davidwalsh.name/event-delegate

simple_rules_to_this
content	The Simple Rules to "this" in JavaScript
parents	js_questions
hyperlink	https://codeburst.io/the-simple-rules-to-this-in-javascript-35d97f31bde3

dom_event_delegation_stack_overflow
content	Stack overflow: what is event delegation?
hyperlink	https://stackoverflow.com/questions/1687296/what-is-dom-event-delegation

js_objects
content	JavaScript Objects: Inherited a Mess
hyperlink	https://davidwalsh.name/javascript-objects

the_core
content	JavaScript: The Core
hyperlink	http://dmitrysoshnikov.com/ecmascript/javascript-the-core/

mdn_prototype_chain
content	Inheritance and the Prototype change
children	instanceof (checks prototype chain)
hyperlink	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Inheritance_and_the_prototype_chain

IIFE
content	Immediately Invoked Function Expression
hyperlink	https://en.wikipedia.org/wiki/Immediately_invoked_function_expression
flashcard (front)	What is an IIFE?
flashcard (back)	An Immediately Invoked Function Expression, or IIFE, is a programming language idiom which produces a lexical scope using function scoping. Example =(function () { })();=. It was a popular way to do modular programming in JS before ES modules and CommonJS.

this
content	this
flashcard (front)	explain "this" in JavaScript
flashcard (back)	1. new keyword used: brand new object. 2. apply/call/bind: object passed in as argument. 3. obj.method(): object that function is property of 4. free function invocation: global object. window in the browser, undefined in strict mode. 5. multiple rules apply: higher rule wins. 6. arrow function in ES2015: ignore previous rules, use encapsulating scope.

coercion
content	coercion: an automatic conversion of values from one data type to another. Ex: having 0 coerce itself to be false.
children	python/boolean_value_coercion, type_coercion_mdn
parents	truthiness
flashcard (front)	What is coercion in javascript?
flashcard (back)	An automatic conversion of values from one data type to another. (ex: 0 to false)

truthiness
content	truthiness: When value is considered true when encountered in a boolean context.
children	coercion (A value is said to be coerced to a boolean value)
hyperlink	https://developer.mozilla.org/en-US/docs/Glossary/Truthy

type_coercion_mdn
content	MDN: type coercion
parents	coercion
hyperlink	https://developer.mozilla.org/en-US/docs/Glossary/Type_coercion

instanceof
content	instanceof: tests to see if the prototype property of a constructor appears anywhere in the prototype chain of an object.
parents	mdn_prototype_chain
flashcard (front)	what does instanceof do?
flashcard (back)	instanceof is a javascript operator that checks to see if a prototype property exists anywhere in the prototype chain of an object

rest_parameter
content	Rest Parameter: syntax that allows a function to accept an indefinite number of arguments as an array, providing a way to represent variadic functions in javascript. ex: =function sum(...theArgs)=
hyperlink	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/rest_parameters
flashcard (front)	What are rest parameters?
flashcard (back)	Rest parameter syntax in JS allows for variadic functions to be represented as an array. Ex: =function sum(..theArgs)=.

template_literals
content	Template Literals: literals delimited with backticks (`). used for multi-line strings, string interpolation with embedded expressions, and special constructs called tagged templates.
children	tagged_templates (template literals are used with tagged templates)
parents	webdev/typescript/template_literal_types
hyperlink	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Template_literals
flashcard (front)	What are template literals in javascript?
flashcard (back)	Template literals are literals denoted with backtick ('`'), and allow for multi-line strings, string interpolation with embedded expressions, and special constructs called tagged templates.

tagged_templates
content	tagged templates
parents	template_literals
hyperlink	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Template_literals#tagged_templates

await
content	The await operator is used to wait for a Promise and get its fulfillment value. It can only be used inside an async function or at the top level of a module.
hyperlink	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/await
flashcard (front)	what does the 'await' keyword do?
flashcard (back)	The await keyword is an operator that is used to wait for a promise and get its fulfillment value. It can only be used inside an async function or at the top level of a module.

static
content	Static: defines a method or field for a class, or a static initialization block. They are accessed on the class itself, rather than an instance of the class.
children	static_initialization_blocks
hyperlink	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes/static

static_initialization_blocks
content	static initialization blocks: contains statements tobe evaluated during class initialization
parents	static
hyperlink	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes/Static_initialization_blocks

class_expression
content	class expression
hyperlink	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/class

bind
content	bind: method of Function instances creates a new function that, when called, calls this function with its this keyword set to the provided value, and a given sequence of arguments preceding any provided when the new function is called.
parents	webdev/nextjs/dashboard_app_pass_id_server_action
hyperlink	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/bind

error
content	Error Object
parents	webdev/nextjs/learn_dashboard_app/13_handling_errors
hyperlink	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error

regex
content	Regex Reference
children	regex/regexp, regex/lookahead_assertion
parents	webdev/nextjs/matcher
hyperlink	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Regular_expressions

bcrypt
content	bcrypt package
children	bcrypt/source
parents	cryptography/bcrypt, webdev/nextjs/learn_dashboard_app/15_adding_authentication
hyperlink	https://www.npmjs.com/package/bcrypt

spread_syntax
content	spread syntax: (...) syntax allows an iterable, such as an array or string, to be expanded in places where zero or more arguments (for function calls) or elements (for array literals) are expected.
parents	cryptography/bcrypt
hyperlink	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_syntax
flashcard (front)	What is spread syntax?
flashcard (back)	Spread syntax (...) allows things like arrays to be expanded in functions where arguments are expected.

node-gyp
content	node-gyp: native addon build tool
parents	bcrypt/source
hyperlink	https://www.npmjs.com/package/node-gyp/v/3.8.0