js code for traversing the properties of an object_javascript skills

Function.prototype.addMethod=function(methodName, func){
if(!this.prototype[methodName]){
this.prototype[methodName]=func;//Add a method to the prototype, this method will affect instances of this type
}
return this.prototype;//Return prototype, this type instance can be called in a chain
}
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;//Add a method to the prototype, this method will affect instances of this type
}
return this.prototype;//Return prototype, this type of instance can be called in a chain
}
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 |