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CoffeeScript 脚本或将其编译为 JavaScript。
-bash/zsh: coffee command not found # Windows (WSL2) sudo apt-get update sudo apt-get install coffeescript # Debian apt-get install coffeescript # Ubuntu apt-get install coffeescript # Arch Linux pacman -S coffeescript # Kali Linux apt-get install coffeescript # Fedora dnf install coffeescript # OS X brew install coffeescript # Raspbian apt-get install coffeescript # Dockerfile dockerfile.run/coffee
CoffeeScript 是一种可以编译成 JavaScript 的小语言。在那种尴尬的 Java 式外表之下，JavaScript 一直有着一颗美丽的心。CoffeeScript 试图以一种简单的方式展示 JavaScript 的优点。
CoffeeScript 的黄金法则是： 它只是 JavaScript 代码一对一编译成等效的 JS，运行时无需解释。您可以从 CoffeeScript 无缝使用任何现有的 JavaScript 库（反之亦然）。编译后的输出可读性好、打印精美，并且运行速度往往与等效的手写 JavaScript 一样快甚至更快。
coffee coffee [path/to/file.coffee]
运行 coffee 脚本：
coffee path/to/file.coffee
coffee 编译为 JavaScript 并保存到同名文件中：
coffee --compile path/to/file.coffee
coffee 编译为 JavaScript 并保存到给定的输出文件：
coffee --compile path/to/file.coffee --output path/to/file.js
coffee 启动 REPL - 交互式 Shell：
coffee --interactive
coffee 观察脚本的变化并重新运行脚本：
coffee --watch path/to/file.coffee
name = 'kamal'
name = 'Mostafa kamal'
career = "Developer | Designer"
html = """
<strong>
cup of coffeescript
</strong>
"""
#{yo}
name = 'Mostafa Kamal'
age = 5
users = 'users name is #{name} and age is #{age}'
-> 是函数的关键词
myfuntion = (x) -> //something
lists = ['kamal', 'jamal', 5 , 'karim']
# objects
users = {name: "Mostafa", status: "Active"}
###
objects
###
users =
infos:
name: "Max"
age: 11
profile:
status: "Developer"
salary: 1000
salary = 50000 users = -> salary = 60000 payment = salary + 100
if conditon x = 'this is if condition' else if condtionElse x = 'This is else if condition' else x = 'This is default condition'
if conditionKamal then kamal else notKamal
items = ['toast', 'cheese', 'wine'] eat food for food in items # [..] to <- from countdown = (num for num in [10..1]) if price == 500 buy() while supply > demand sell() until supply > demand
switch day
when "Mon" then {
test: 'kamal'
}
when "Tue" then go relax
when "Thu" then go iceFishing
when "Fri", "Sat"
if day is bingoDay
go bingo
go dancing
when "Sun" then go church
else go work
Account = (customer, cart) ->
@customer = customer
@cart = cart
$('.shopping_cart').on 'click', (event) =>
@customer.purchase @cart
class Animal
constructor: (@name) ->
move: (meters) ->
alert @name + " moved #{meters}m."
class Snake extends Animal
move: ->
alert "Slithering..."
super 5
class Horse extends Animal
move: ->
alert "Galloping..."
super 45
sam = new Snake "Sammy the Python"
tom = new Horse "Tommy the Palomino"
sam.move()
tom.move()
import * as underscore from 'underscore' export * from 'underscore'
connection(
try
'done'
catch error
"username or password mismatch ! check again"
)
| coffee | JS |
|---|---|
| is | === |
| isnt | != |
| not | ! |
| and | && |
| or | // {or} |
| true, yes, on | true |
| false, no, off | false |
| @, this | this |
| a ** b | Math.pow(a, b) |
| a // b | Math.floor(a / b) |
| a %% b | (a % b + b) % b |