js遍历map的几种方式,js遍历map顺序变了

var param = { 'address':"我是地址", 'phone':"1234567890", 'name':"我是名字", 'companyId':'yifenchuanmei'};for(var key in param) console.log("属性：" + key + ",值："+ param[key]);结果打印输出属性：address,值：我是地址属性：phone,值：1234567890属性：name,值：我是名字属性：companyId,值：yifenchuanmei