1.簡(jiǎn)單工廠

現(xiàn)在生產(chǎn)面包,巧克力，牛奶

function Factory(price,name){

if (this instanceof Factory) {

let s = this[name](price);

} else {

return new Factory(price,name)

}

}

undefined

Factory.prototype = {

'getNiu':function(price){

alert('生產(chǎn)牛奶')

},

'getMinabao':function(price){

alert('生產(chǎn)面包')

},

'getJkeo':function(price){

alert('生產(chǎn)巧克力')

}

}
Factory(22,'getNiu')
Factory(22,'getJkeo')

工廠模式
??