描述：数组和对象的使用
效果展示
代码演示：
<!DOCTYPE html>
<html lang="en">
<head>
<title>3-2</title>
</head>
<body>
<h1>JavaScript中对象操作</h1>
<h3>数组</h3>
<script>
var arr = ["张三","李四","王五"];
for(let i=0; i<arr.length; i++){
document.write(arr[i]+"<br/>");
}
</script>
<H3>对象操作</H3>
<script>
var user0 = {"name":"张三","age":25,"address":"北京"};
var user1 = {"name":"李四","age":22,"address":"上海"};
var user2 = {"name":"王五","age":23,"address":"广东"};
var users = [user0,user1,user2];
for(let i=0; i<users.length; i++){
document.write(users[i].name+"——"+[i].age+"——"+users[i].address+"<br/>")
}
</script>
</body>
</html>
