24 数组遍历

• 创建一个数组
• 所谓的遍历数组，就是将数组中所有的元素都取出来
  用for循环

var arr = ["孙悟空","猪八戒","沙和尚"];

function Person(name,age){
	this.name = name;
	this.age = age;
}
Person.prototype.toString = function(){
	return "name ="+name +"age = "+age;
};

var per = new Person("孙悟空",18);
var per = new Person("猪八戒",28);
var per = new Person("红孩儿",38);
var per = new Person("二郎神",48);
var perArr = [per,per2,per3,per4,per5];
function getAdult(arr){
	var newarr = [];
	for(var i = 0;i < arr.length;i++){
		var p = arr[i];
		if(p.age >= 18){
			newarr.push(p);
		}
	}
	return newarr;
}
var result = getAdult(perArr);
console.log(result);