设计模式

/**

• AMD 规范 Requirejs
• /
  // https://juejin.cn/post/6844903759009595405
  // 模块十日谈 http://huangxuan.me/js-module-7day/#/8

// IOC 控制反转 Inversion of control

class RTeam {
constructor(props) {
super(props)
this.name = ‘Rocket’
}

}

class Player {

constructor(props) {
super(props);
this.team = new Team()
}

info() {
console.log(this.team.name)
}
}

let ym = new Player()
ym.info()

// RequireJS/AMD 的模块加载器

var injector = {

}

// 责任链模式

// 链式调用

const A = function(value) {
this.value = value
}

A.prototype.add = function(val) {
this.value += val
return this
}

A.prototype.sub = function(val) {
this.value -= val
return this
}

A.prototype.multiply = function(val) {
this.value *= val
return this
}

A.prototype.divide = function(val) {
this.value /= val
return this
}

var calculator = new A(1)
// (1 + 2 - 3) * 5
calculator.add(2).sub(3).multiply(5)

class Tools {

constructor(val) {
this.value = val
}

add(val) {
this.value += val
return this
}

sub(val) {
this.value -= val
return this
}

multiply(val) {
this.value *= val
return this
}
}

var num = new Tools(2)
num.add(2).sub(1)