学步园

Function.prototype.addMethod=function(methodName,func){
if(!this.prototype[methodName]){
this.prototype[methodName]=func;//给原型增加方法，此方法会影响到该类型的实例上
}
return this.prototype;//返回原型，此类型实例可以进行链形调用
}
function CustomObject(name,value){
this.name=name || 'CustomeObject';
this.value=value || 0;
this.toString=function(){
return '[name:'+this.name+',value:'+this.value+']'
}
}
CustomObject.addMethod('testFun',function(){})
var obj=new CustomObject();
var info='';
for(var property in obj){
info+=property+" | ";
}
alert(info); // name | value | toString | testFun |

Function.prototype.addMethod=function(methodName,func){
if(!this.prototype[methodName]){
this.prototype[methodName]=func;//给原型增加方法，此方法会影响到该类型的实例上
}
return this.prototype;//返回原型，此类型实例可以进行链形调用
}
function CustomObject(name,value){
this.name=name || 'CustomeObject';
this.value=value || 0;
this.toString=function(){
return '[name:'+this.name+',value:'+this.value+']'
}
}
CustomObject.addMethod('testFun',function(){})
var obj=new CustomObject();
var info='';
for(var property in obj){
if(!obj.hasOwnProperty(property)) continue;
info+=property+" | ";
}
alert(info); // name | value | toString |