<!DOCTYPE html> <html> <head> <meta charset="utf-8"> </head> <body> <p>点击下面的按钮,循环遍历对象 "person" 的属性。</p> <button onclick="myFunction()">点击这里</button> <p id="demo"></p> <script> function myFunction(){ var person={fname:"哈哈",lname:"尔尔",age:12};
var x; var txt="";for (x in person){txt=txt + person[x]+" ";}document.getElementById("demo").innerHTML=txt;}</script></body></html>