精华 你会考虑用它么?mini-obj
发布于 3 年前 作者 i5ting 1172 次浏览 最后一次编辑是 10 个月前 来自 分享

这是一个非常小的简单的oo用法封装 npm version

Install

npm install --save node-mini-obj

第一版

源码

module.exports = global.Class = function(name, src) { 
	src.constructor.prototype = src; 
	global[name] = src.constructor; 
}; 

用法

var $ = require('./index')

$('Person',{
    constructor: function(name) { 
        this.name = name;
    }, 
    say: function(){
        console.log('hello ' + this.name);
    }
})

var p = new Person('alfred sang');
p.say();

还是蛮舒服的吧?

第二版

这个版本主要增加了继承功能,具体用法如下

基本用法

没有构造函数的情况

$('Person1',{
	say: function(){
		console.log('hello ' + this.name);
	}
})

var p1 = new Person1();
p1.name = 'i5ting'
console.log(p1);
p1.say();

有构造函数的情况

var $ = require('./index')

$('Person',{
	constructor: function(name) { 
		this.name = name;
	}, 
	say: function(){
		console.log('hello ' + this.name);
	}
})

var p = new Person('alfred sang');
p.say();

测试1:plain object继承

var $ = require('./index')

$('Person',{
	constructor: function(name) { 
		console.log('---1----');
		this.name = name;
	}, 
	bbb:'bbb',
	hello:function(){
		console.log('hello');
	}
},
{
	constructor: function(name) { 
		console.log('---2----');
		this.name = name;
	
	}, 
	say: function(){
		console.log('hello ' + this.name);
		console.log(this.bbb);
	}
})

var p = new Person('alfred sang');
p.hello()
p.say();

测试2:使用已有对象完成继承

var $ = require('./index')

$('Base',{
	constructor: function(name) { 
		this.name = name;
	},
	hello:function(){
		console.log('hello');
	}
})

var base = new Base('a person');

$('Person',base,{
	constructor: function(name) { 
		this.name = name;
	}, 
	say: function(){
		console.log('hello ' + this.name);
		this.hello();
	}
})

var p = new Person('alfred sang');
p.say();
p.hello();

测试3:使用继承对象的原型方法

var $ = require('./index')

var Base = function(name){
	this.name = name;
}

Base.prototype.hello = function(){
	console.log('---Base.prototype.hello----');
}

var base = new Base('a person');

$('Person',base,{
	constructor: function(name) { 
		this.name = name;
	}, 
	say: function(){
		console.log('hello ' + this.name);
		this.hello();
	}
})

var p = new Person('alfred sang');
p.say();

欢迎反馈拍砖

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4 回复

考虑2个TODO

  • 使用init作为构造函数
  • 使用this._super调用父类方法
  • 完善的继承链

赞,楼主高产啊,而且大部分都是工具类

赞,看了例子,感觉跟coffeescript的class神似。

@think2011

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()

哈哈,还真有点像呢,上面是官方的例子

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