【简答题】
试题五(共15分，每空3分)
[说明]
图5是用JavaScript编写的同学录程序的执行效果。程序的具体功能是通过将“鼠标左键单击的左框中按钮的标记”保存在Cookie中，实现了点击不同的按钮在右框内显示不同的内容。
[HTML文本]
<html>
<head>
<meta http-equiv=”Content-Type” c_dj=”text/html; charset=gb2312”>
<title>同学录</title>
<script language=”JavaScript”>
var ButtonSelected; // 用户按下的按钮的标记
function getCookie(name) {....} // 读取Cookie值，代码省略
function setCookie(name,value) {....} // 写Cookie值，代码省略
function deleteCookie(name) {....} // 删除Cookie，代码省略
function refresh(i) // 保存按钮标记并刷新当前网页显示
{
setCookie(“ButtonSelected”,i);
history. ___(1)___ ;
}
function load() // 初始化Cookie值
{
var Expdate = new Date();
Expdate.setTime(expdate.getTime() + (5*24*60*60 + 1000));
ButtonSelected = 0;
setCookie(“ButtonSelected”, ButtonSelected, Expdate);
}
function Address(strName, strSex, strAddress, strMobile) // 设置通讯录字段的值
{
this.name = strName;
this.sex = strSex;
this.address = strAddress;
this.mobile = strMobile;
return this;
}
function initArray(iSize) // 初始化数组
{
if (initArray.argument.length)
this.length = iSize;
else
this.length = 0;
for (var i=0; i<this.length; i++)
this[i] = null;
return this;
}
addresses = ___(2)___ ; // 创建一个存放5个记录的数组
addresses[0] = new Address(“高阳”,”男”,”上海市徐汇区”,”130000000”);
addresses[1] = new Address(“刘东升”,”男”,”北京市上地”,”135000000”);
addresses[2] = new Address(“王丽”,”女”,”成都市建设路”,”133000000”);
addresses[3] = new Address(“赵磊”,”男”,”沈阳市五里河”,”139000000”);
addresses[4] = new Address(“张强”,”男”,”南京市紫金山”,”138000000”);
function printAddress(ObjAddr) // 输出通讯录中的一行
{
return “<TD>” + objAddr.name + “</TD><TD>” + ObjAddr.sex + “</TD><TD>” + ObjAddr.address + “</TD><TD>” + ObjAddr.mobile +”</TD>”;
}
</script>
</head>
<body Onload = “ ___(3)___ ”>
<p align=”center”>同学录</p>
<table border=”1” width=”882” height=”1” align=”left”>
<tr><td width=”100” height=”26”>
<input type=”button” value=” 通讯录 “ name=”Btxl” _dj=”refresh(1)”></td>
<td width=”766” height=”140” rowspan=”17” valign=”top” align=”center”>
<script>
ButtonSelected = ___(4)___ ; // 读取上次点击的按钮的标记
if (ButtonSelected == 1)
{
document.write(“<table border=1><tr><th>姓名</th><th>性别</th>”);
document.write(“<th>通信地址</th><th>手机号码</th></tr>”)
for (var i=0; i<address.length; i++)
{
document.write(“<tr>”);
document.write(printAddress(addresses[i]));
document.write(“</tr>”);
}
document.write( ___(5)___ );
}
else if(ButtonSelected == 2)
{
// 若选择其他按钮则执行其他操作，代码省略
}
</script>
</td>
<-- 省略网页结构性文档 -->
</table>
</body>
</html>
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