this
vs
that
GitHub ★ 460

What is the difference between

this & that?

CSS

:active vs :focus

border-box vs content-box

border vs outline

display: none vs [hidden]

display: none vs opacity: 0 vs visibility: hidden

margin vs padding

Normalize vs Reset CSS

style="width: ___" vs width="___"

word-break: break-all vs word-wrap: break-word

DOM

addEventListener() function vs on property

clientHeight vs offsetHeight vs scrollHeight

clientY vs pageY

currentTarget vs target

DOMContentLoaded vs load

event bubbling vs capturing

event.preventDefault vs return false

key vs keyCode vs which

keydown vs keypress vs keyup

mouseenter vs mouseover

naturalWidth vs width

nodeName vs tagName

parentElement vs parentNode

stopImmediatePropagation vs stopPropagation

HTML

alt vs title

<b>, <i> vs <strong>, <em>

<button> vs <input type="button" />

class vs id

<div> vs <section>

Element vs Node

script async vs script defer

JavaScript

apply vs call

argument vs parameter

array = [] vs array.length = 0

arrow vs regular function

concat vs push

const vs let vs var

delete obj.property vs obj.property = undefined

double quotes vs single quote

encodeURI vs encodeURIComponent

== vs ===

for ... in vs for ... of

function declaration vs function expression

hasOwnProperty vs in

instanceof vs typeof

Map vs WeakMap

method in class constructor vs prototype

null vs undefined

Number() vs parseInt()

Object.getOwnPropertyNames() vs Object.keys()

Object.is() vs ===

object.property vs object['property']

Object vs Map

++value vs value++

slice vs splice

string.charAt(i) vs string[i]

substr vs substring

undefined vs void

variable === undefined vs. typeof variable === "undefined"

React

<> vs React.Fragment

TypeScript

const enum vs enum

const vs readonly

*.d.ts vs *.ts

function vs property in interface

interface vs type

literal union type vs string enums

string vs String

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