写一个方法js将数组对象中某个属性值相同的对象合并成一个新对象

Answer 1

function Dog(name,age){
this.name=name;
this.age=age;
};

Dog.prototype.toString=function(){
return this.name, age.this
};


var myDog1=new Dog("旺财",2);
var myDog2=new Dog("来福",8);
var myDog3=new Dog("小白",7);
var myDog4=new Dog("小黄",3);
var myDog5=new Dog("小黑",6); 

var dogArr=[myDog1,myDog2,myDog3,myDog4,myDog5];

function oldDog(arr){
newDog=[];
for(var i=0;i<arr.length; i++){
var l=arr[i];
if(l.age>=5){
newDog.push(l);
}
}
return newDog;
};
var result=oldDog(dogArr);
console.log(result);