JavaScript继承方式(4)
4,继承工具函数四
view sourceprint?01 /**
02 * @param {String} className
03 * @param {String/Function} superClass
04 * @param {Function} classImp
05 */
06 function $class(className, superClass, classImp){
07 if(superClass === "") superClass = Object;
08 var clazz = function(){
09 return function(){
10 if(typeof this.init == "function"){
11 this.init.apply(this, arguments);
12 }
13 };
14 }();
15 var p = clazz.prototype = new superClass();
16 var _super = superClass.prototype;
17 window[className] = clazz;
18 classImp.apply(p, [_super]);
19 }
定义父类Person
view sourceprint?01 /**
02 * 父类 Person
03 */
04 $class(Person,,function(){
05 this.init = function(name){
06 this.name = name;
07 };
08 this.getName = function(){
09 return this.name;
10 };
11 this.setName = function(name){
12 this.name = name;
13 }
14 });
子类Man
view sourceprint?01 /**
02 * 子类 Man
03 */
04 $class(Man, Person, function(supr){
05 this.init = function(name, age){
06 supr.init.apply(this,[name]); // 该句很重要
07 this.age = age;
08 };
09 this.getAge = function(){
10 return this.age;
11 };
12 this.setAge = function(age){
13 this.age = age;
14 };
15 });
16 var m = new Man(Jack,25);
17 console.log(m.name); // Jack
18 console.log(m.age); // 25
从输出看可以看到子类Man的确继承了父类的属性和方法
补充:web前端 , JavaScript ,