npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

oo-class

v1.4.4

Published

A simple OO Class factory

Downloads

1

Readme

Class.js v1.4.4Build Status

oop javascript

特性

  • 和原生创建的类是一致的,实例化的对象不包含额外任何成员和添加剂

      var a = new A();
      for(var k in a){
      	console.log(k);  //没有多余的成员
      }
  • 创建的类实例化时支持可以不使用new关键字实例化

      var a = new A();
      var a = A();         //可以省略new
  • 使用的继承方式保证原型链和对象检测,尽量靠近原生继承和实例化机制

      sub instanceof SuperClass //true 可以用instanceof检测
    
      var A = $Class.create({
      	__:function(){
      		return {};        //实例化A时返回{}而不是实例,和原生一致
      	}
      });
  • 提供创建单例类的接口,单例类区别于单例对象{}, 需要实例化且可以继承

      var S = $Class.singleton({
      	foo:function(){
      		console.log('foo');
      	}
      });
      var s1 = new S();
      var s2 = new S();  // s1 === s2

API

Class.js统一的访问命名是$Class, 当你使用此库时,应该$Class.xxx(...)来调用API

1.创建一个类

	$Class.create( classMemberObject );

classMemberObject定义类的成员,其中属性__(双下划线)约定为构造方法。

如:

	var A = $Class.create({
		__:function(){
			console.log('A构造方法');
		}
	});

这里实例化的A类的成员是不包含任何污染的,var a = new A();可以用for in遍历检测一下a的所有成员。

2.创建一个子类

	$Class.inherit( SuperClass, subClassMemberObject);

SuperClass为父类,subClassMemberObject是定义子类的成员,其中属性__(双下划线)约定为构造方法。

如:

	var B = $Class.inherit(A, {
		__:function(){
			console.log('B构造方法');
		}
	});

或者使用父类提供的$extend方法:

	SuperClass.$extend( subClassMemberObject )

subClassMemberObject是定义子类的成员,其中属性__(双下划线)约定为构造方法。

如:

	var B = A.$extend({
		__:function(name){
			this.name = name;
			console.log('B构造方法');
		}
	});

这里创建好的B类,是可以用 instanceof 去检测的 (new B()) instanceof A //true

3.拓展原型成员

通常使用 A.prototype.xxx = foo;方式拓展。 这里提供了混入的方式:

	$Class.include(Class, prototype)

如:

	$Class.include(A, {
		xxx:foo		
	});

4.实例化某个类

实例化类通常可以用new关键字, 这里提供了new方法,效果和new是一样的。

	$Class['new']( Class, [argsArray] );

Class为类,argsArray为参数(数组)

如:

	$Class['new'](B, ['tangobot']);  //等同于 new B('tangobot');

5.单例类

创建一个单例类

	$Class.singleton( [classMemberObject] )

classMemberObject是定义子类的成员,其中属性__(双下划线)约定为构造方法。

如:

	var S = $Class.singleton({foo:"foo"});
	var s1 = new S();
	var s2 = new S();
	s1 === s2;  // true
	console.log(s1.foo) //"foo"

6.成员检测

	$Class.member( Class );

返回某个类的原型链上所有定义的成员名称(数组) 如:

	var C = $Class.create({
		foo:'ccc',
	});
	var D = C.$extend({
		bar:'ddd'
	});
	$Class.member(D);   //['bar', 'foo']

	
	

7.Base基类

	$Class.Base;

所有create出来的类都是继承自内置的基类$Class.Base, $Class.Base继承于系统环境中的Object。

如:

	var Foo = $Class.create();  
	//继承关系为	 Foo <= $Class.Base <= Object

这里可以重写或者拓展 $Class.Base 来达到拓展Foo类的目的, 你也可以删除$Class.Base 或者 $Class.Base = null 这样就可以改变继承为 Foo <= Object

8.全局配置

	$Class.config( [configObject|configName] )

配置项及默认值:

    constructorName:'__',       //构造方法约定名称,默认约定为双下划线__
	autoSuperConstructor:false, //当子类被实例化时是否先执行父类构造函数 设置后仅对后面声明的类有效
	notUseNew:true,             //是否可以不使用关键字new 直接调用方法实例化对象 如:A()
	useExtend:true,             //是否使用让类拥有拓展继承的方法 如:B = A.$extend({})
	useSuper:true,              //是否让类有$super属性访问父类成员 如:B.$super.foo()
	disguise:false,             //是否让代码生成的构造函数伪装成定义的__:function(){}
	useConstructor:true  		//是否使用B.$constructor来保存定义的__构造函数,这里create inherit生成的构造函数是不等于__的

配置后,仅对后面的生成的类才会产生效果。

如:

$Class.config({notUseNew:false}); //设置后,必须用new实例化对象