Javascript备忘录-枚举一个对象的所有属

var obj = { age: 18, fname: "Rand ", lname: "McKinnon" };
function showProps(obj, objName) {
var result = "";
for (var prop in obj) {
result += objName + "." + prop + " = " + obj[prop] + "\n";
}
return result;
}
console.log(showProps(obj, "person"));

var obj = { age: 18, fname: "Rand ", lname: "McKinnon" };
Object.getOwnPropertyNames(obj).forEach(function (i, value) { console.log(i + ":" + value + "\n") });

Object.keys(obj).forEach(function(i,value){console.log(i+":"+value+"\n")});