📄 for_in.html
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<!--for_in.html文件代码-->
<html>
<head>
<title>for...in语句使用示例</title>
<script language="JavaScript">
function Student(Name,StuNum,Age){
this.name = Name;
this.stunum = StuNum;
this.age = Age;
}
function displayProp(obj){
var property;
//使用for_in语句访问对象obj中的所有属性
for(property in obj)
document.writeln(obj[property]+" ，");
document.writeln("<br>");
}
</script>
</head>
<body>
<script language="JavaScript">
var Students=new Array();
Students[0]=new Student("Mike","s001",20);
Students[1]=new Student("Jenny","s002",21);
Students[2]=new Student("Emma","s003",20);
</script>
<br>
<center>
<script language="javascript">
var i=0;
while(i<3){
displayProp(Students[i]);
i=i+1;
}
</script>
</center>
</body>
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