清华大学出版的《事半功倍系列 javascript》,本人照着书敲出来的,有些翻译了一下.前几年看了一下,最近无事,重新翻了翻,很有帮助.本书应该有光盘的,但学校的书,光盘不知在哪.希望对你学 javascript有帮助
第一章javascript简介
1.在地址栏输入javascript语句
Javascript:Document.write("显示文字")
2.将javascript嵌入 HTML文档
<script language=javascript>document.bgColor="blue"</script>
第二章 使用变量和数组
1.声明变量
<script language=javascripe>Var answer1,answer2,answer3,answer4;answer1=9;answer2=2.5answer3="Milkey May" answer4=true</script>
2.使用整数
<script language=javascript>var decimalNum,hexadecimalNum,octalNumdecimalNum=24hexadecimalNum=0x24octalNum=024document.write("显示十进制数："+ decimalNum+"<br>")document.write("显示十六进制数："+ hexadecimalNum +"<br>")document.write("显示八进制数："+ octalNum +"<br>")</script>
3.使用浮点数
<script language=javascript>var num1,num2,num3,num4num1=1234567890000.0num2=5.14e23num3=0.0000123456num4=6.0254e3-4document.write("浮点数1："+num1+"<br>")document.write("浮点数2："+num2+"<br>")document.write("浮点数3："+num3+"<br>")document.write("浮点数4："+num4+"<br>")</script>
4.使用布尔值
<script language=javascript>var answer1,answer2answer1=trueanswer2=falsedocument.write("显示布尔1："+answer1+"<br>")document.write("显示布尔2："+answer2+"<br>")</script>
5.使用字符串
<script language=javascript>var str1,str2str1="fdsgdg dsfdsf china"str2="武汉市广播电视大学"document.write("显示字符串1："+str1+"<br>")document.write("显示字符串2："+str2+"<br>")</script>
6.确定变量类型
<script>var answer1,answer2,answer3,answer4answer1=9answer2=2.5answer3="milky may"answer4=truedocument.write("变量1的类型是："+typeof answer1 +"<br>")document.write("变量2的类型是："+typeof answer2 +"<br>")document.write("变量3的类型是："+typeof answer3 +"<br>")document.write("变量4的类型是："+typeof answer4 +"<br>")</script>
7.将字符串转换成数字
<script>var str1="31 days in january"var int1=parseInt(str1)document.write("str1的数据类型是 ："+typeof str1+"<br>")document.write("int1的数据类型是 ："+typeof int1+"<br>")</script>
8.将数字转换成字符串
<script>var int1=256var str1=""+int1document.write("str1的数据类型是 ："+typeof str1+"<br>")document.write("int1的数据类型是 ："+typeof int1+"<br>")</script>
9.声明数组
<script>array=new Array(5)array[0]=1array[1]=3array[2]=5array[3]=7array[4]=11document.write("数组是："+array[0]+" "+array[1]+" "+array[2]+" "+array[3]+" "+array[4])</script>
10.确定数组元素的个数
<script>array=new Array(5)array[0]=1array[1]=3array[2]=5array[3]=7array[4]=11document.write("数组是："+array[0]+" "+array[1]+" "+array[2]+" "+array[3]+" "+array[4]+"<br>")document.write("数组的元素个数是"+array.length)</script>
11.将数组转换为字符串
<script>array=new Array()array[0]="dark"array[1]="apple"array[2]="nebula"array[3]="water"str1=array.join()str2=array.join(" ")document.write(str1+"<br>")document.write(str2)</script>
12.对数组排序
<script>array=new Array()array[0]="dark"array[1]="apple"array[2]="nebula"array[3]="water"str1=array.sort()document.write(str1+"<br>")</script>
第三章 创建表达式
1.使用算术运算符
<script>var1=12var2=10varadd=var1+var2varsub=var1-var2varmult=var1*var2vardiv=var1/var2varmod=var1%var2document.write("数据1是："+var1+"<br>")document.write("数据2是："+var2+"<br>")document.write("数据相加是："+varadd+"<br>")document.write("数据相减是："+varsub+"<br>")document.write("数据相乘是："+varmult+"<br>")document.write("数据相除是："+vardiv+"<br>")document.write("数据相除取余数是："+varmod+"<br>")</script>
2.递增变量和递减变量
<script>days=1document.write("输出变量"+days+"<br>")days++document.write("递增后变量变为："+days)</script>
3.创建比较表达式
<script>daysofmonth=28if(daysofmonth==28)month="february"document.write("days of month:"+daysofmonth+"<br>")document.write("month:"+month)</script>
4.创建逻辑表达式
<script>dayofmonth=28if(dayofmonth==28 || dayofmonth==29)month="february"document.write("days of month:"+dayofmonth+"<br>")document.write("month:"+month)</script>
5.使用条件运算符
<script language="javascript">stomach="hungry";time="5:00";(stomach=="hungry"&&time=="5:00") ? eat = "dinner":eat="a snack";document.write("输出结果"+eat);</script>
6.识别数字
<script>var1=24;(isNaN(var1))?document.write("变量var1"+var1+"不是数字"):Document.write("变量var1"+var1+"是数字")</script>
第四章 控制程序流程
1.使用IF –Else语句
<script>month="december"date=25if(month=="december" && date==25)document.write("今天是圣诞节,商店关门")elsedocument.write("欢迎,您来商店购物")</script>
2.使用for 循环
<script>for (count=1;count<=10;count++)document.write("输出第"+count+"句"+"<br>")</script>
3.使用while循环
<script>count=1while(count<=15){document.write("输出第"+count+"句" +"<br>")count++}</script>
4.中断循环
<script>count=1while(count<=15){count++if(count==8)break;document.write("输出第"+count+"句"+"<br>")}</script>
5.继续循环
<script>count=1while(count<=15){count++if(count==8)continue;document.write("输出第"+count+"句"+"<br>")}</script>
6.使用javascript定时器
<script>function rabbit(){document.write("输出语句")}</script><body οnlοad=window.setTimeout(rabbit(),5000)>
7.设置定期间隔
<script>window.setInterval("document.form1.text2.value=document.form1.text1.value",3000)</script><form name=form1><input type=text name=text1><br><input type=text name=text2><br></form>
8.清除超时和间隔
<script>stop=window.setInterval("document.form1.text2.value=document.form1.text1.value",300)</script><form name=form1><input type=text name=text1><br><input type=text name=text2><br><input type=button name=button1 value=" 清除超时和间隔" οnclick=clearInterval(stop)></form>
第五章 使用函数
1.声明函数
<script>function quote(){ document.write("输出语句")}</script>
2.调用函数
<script>function quote(){ document.write("输出语句")}quote()</script>
3.了解全局变量和局部变量
任何不用 var关键字声明的变量都是全局变量,任何在函数外声明的变量都是全局变量
4.将参数传送给函数
<script>function f(item){document.write("输出参数"+item+"<br>")}f("fgdfgd")f("参数二")</script>
5.从函数返回值
<script>function average(var1,var2,var3){ave=(var1+var2+var3)/3;document.write("输出结果");return ave;}document.write(average(34,56,78))</script>
6.通过HTML链接调用函数
<script>function quote(){document.write(" 输出字符串")}</script><a href=javascript:quote()>通过HTML链接调用函数</a><a href=javascript:Document.write("输出字符")> 通过HTML链接调用函数,直接写javascript语句</a>
第六章 处理事件
1.检查鼠标单击
<form name=form1><input type=button name=button1 value=hello οnclick=document.form1.button1.value='there'></form>
2.检测双击
<form name=form1><input type=button name=button1 value=hello οnclick=document.form1.button1.value='你单击了按钮' οndblclick=document.form1.button1.value='你双击了该按钮'></form>
3.创建悬停按钮
<img src=go.gif οnmοuseοver=document.images[0].src='go2.gif' οnmοuseοut= document.images[0].src='go.gif'>
4.检测按键
<form name=form1><input type=text name=text1 value=hello οnkeypress="if(window.event.keyCode=='100') document.form1.text1.value='你按了d键'"></form>
5.设置焦点
<form name=form1><input type=text name=text1 value=helloonfous=document.form1.text1.value='该文本框获得焦点'οnblur=document.form1.text1.value='该文本框失去焦点'></form>
6.检测下拉菜单选择
<form name=form1><select name=select1 size=4onChange=document.form1.text1.value=document.form1.select1.value><option value="北京">北京</option><option value="上海">上海</option><option value="武汉">武汉</option><option value="天津">天津</option><option value="大连">大连</option></select><input tppe=text name=text1 value=hello></form>
7.创建网页加载和卸载信息
<body οnlοad=document.form1.text1.value='页面加载完毕' οnunlοad=alert('再见,欢迎再来')><form name=form1><input type=text name=text1 value="页面正在加载 ……"></form>
第七章 使用对象
1.理解对象/属性和方法
<body bgcolor="green"><script>document.write("页面背景颜色是:"+document.bgColor)document.write("页面前景颜色是:"+document.fgColor)</script>
2.使用网页元素对象
<script></script><form name=form1><textarea name=ta1>dfgfdgfdhfdhdfdfgdf</textarea><input type=button value="选择文本" οnclick=document.form1.ta1.select()><input type=button value="显示文本" οnclick=document.write(document.form1.ta1.value)></form>
3.使用子对象
<form name=form1><input type=text name=text1 value=hello></form><script>document.form1.text1.value="gdfgfd"</script>
<form name=form1><input type=radio name=radio1>男<input type=radio name=radio2>女</script><script>document.form1.radio1.checked=true</script>
4.使用预定义对象
<script>str1="dgdfgdfgdfhf固定法固定法功夫攻打法"document.write(str1+"<br>")str2=str1.substr(5)document.write(str2+"<br>")document.write("输出圆的面积:"+Math.PI*Math.pow(5.0,2))</script>
5.创建新对象
<script>today=new Date()document.write("今天是"+(today.getMonth()+1)+"月"+today.getDate()+"日"+"<br>")document.write("现在是:"+today.toLocaleString())</script>
6.引用当前对象
<form name=form1><input type=text name=text1 value="dgdgdfgfd" οnclick=this.select()></script>
7.查看对象属性
<script>for(prop in window){document.write("window."+prop+"="+window[prop]+"<br>");}for(prop2 in location){document.write("location."+prop2+"="+location[prop]+"<br>");}</script>
8.使用Array对象
<script>array=new Array(10)array[0]="bark"array[1]="apple"array[2]="nebula"array[3]="cookie"array[4]="technology"document.write("数组元素个数是"+array.Length+"<br>")document.write("用 join将数组合并"+array.join(" ")+"<br>")document.write(" 数组排序"+array.sort())</script>
9.使用 image 对象
<img src=**.gif alt="图片提示…." border=10><script>document.write("图片提示是:"+document.images[0].alt+"<br>")document.write("图片边框大小是:"+document.images[0].broder)</script>
10.预加载图像
<script>freddy=new Image()freddy.src=freddy.gif</script><body οnlοad=document.images[0].src=freddy.src>,<img src="blank.gif"></body>
11.改变图像
<img src=freddy.gif><br><form name=form1><input type=button name=button1 value="改变图像" onclickd=document.images[0].src=dudjp.gif></form>
12.使用link和anchor对象
<a name=anchor1>锚点1<br><a href=http://www.microsoft.com>Microsoft</a><br><a href=http://www.sohu.com>sohu</a><br><a href=http://www.sina.com.cn>sina</a><br><script>document.write("本页面共有"+document.links.length+"链接"+"<br>")document.write("本页面共有"+document.anchors.length+"锚点"+"<br>")document.write("第一个链接协议是"+document.links[0].protocol+"<br>")document.write("第一个链接路径是"+document.links[0].pathnamel+"<br>")document.write("第一个链接href是"+document.links[0].hrefl+"<br>")</script>
13.改变链接
<a href =http://www.microsoft.com>link</a><form name=form1><input type=button name=button1 value="改变链接" οnclick=document.links[0].href='http://www.sohu.com'></form>
14.使用history对象
<form name=form1><input type=button name=button1 value="向后返回2页" οnclick=window.history.go(-2)></form>
第八章 使用窗口
1.在浏览器的状态栏上显示文本
<body οnlοad=window.status="欢迎光临我的站点"><a href=http://www.sohu.com>sohu</a></body>
2.改变背景色
<script>document.bgColor="orange"</script>
3.列举背景颜色
<body bgColor =green><script>document.write("当前背景色是:"+document.bgColor)</script></body>
4.改变文本和链接颜色
<script>document.bgColor="orange"document.fgColor="blue"document.linkColor="red"</script><h2>看看这段文本颜色</h2><a href=http://www.sohu.com>sohu</a></body>
5.改变文档标题
<script>name="Mouse"document.title="welcome to "+name+"'s House"document.write(document.title)</script>
6.显示修改日期
<script>document.write("本页面最后修改时间是"+document.lastModified)</script>
7.查看当前文档的URL
<script>document.write("本页面的URL:"+document.URL)</script>
8.查看引用页
<script>document.write("本页面的引用页是"+document.referrer)</script>
9.打开新的浏览器窗口
<script>window.open("*.htm","title","width=200,height=400,resizable=yes")</script>
10.关闭远程窗口
close.html:<script>document.write("正文")</script><form name=form1><input type=button name=button1value="关闭" οnclick=window.close()></form>
open.html<script>window.open("close.html","romote","width=200,height=400,resizable=yes")</script>
11.打印窗口
<script>document.write("正文")</script><form name=form1><input type=button value=打印 οnclick=window.print()></form>
12.移动窗口
<form name=form1>水平方向<input type=text name=x value=20>垂直方向<input type=text name=y value=50><input type=button value="移动窗口到…"οnclick=window.moveTo(document.form1.x.value,document.form1.y.value)></form>
<form name=form1>水平方向<input type=text name=x value=20>垂直方向<input type=text name=y value=50><input type=button value="移动窗口"οnclick=window.moveBy(document.form1.x.value,document.form1.y.value)></form>
13.改变窗口大小
<form name=form1>水平方向<input type=text name=x value=200>垂直方向<input type=text name=y value=500><input type=button value="改变窗口大小到….."οnclick=window.resizeTo(document.form1.x.value,document.form1.y.value)></form>
<form name=form1>水平方向<input type=text name=x value=200>垂直方向<input type=text name=y value=500><input type=button value="改变窗口大小"οnclick=window.resizeBy(document.form1.x.value,document.form1.y.value)></form>
14.用警告对话框通知用户
<script>window.alert("welcome")</script>
15.用提示对话框接受输入
<script>name=window.prompt("输入姓名","姓名")document.write(" 欢迎您:"+name+"来到这里")</script>
16.用确认对话框使用户做出决定
<script>like=window.confirm("你觉得好吗?")if(like==true)document.write("谢谢你的夸奖")elsedocument.write("希望得到你的夸奖")</script>
第九章 使用字符串
1.使用字符串对象
<script>mystring="gdgdfgfddddaaaaaaaaaaaabbbbbbbbbbbbbbbbbvbhg.<br>"document.write(mystring)document.write(mystring.bold())document.write(mystring.toUpperCase())</script>
2.使用子字符串
<script>str1="fdsf 1111 gfdgfd dfdsf cccc dddd.<br>"document.write(str1)document.write(str1.substring(0,13)+"<br>")document.write(str1.substr (20,11)+"<br>")</script>
3.连接字符串
<script>str1="may you find"str2="peace,happiness and prosperity.<br>"document.write(str1+"<br>")document.write(str2)document.write(str1.concat(str2))document.write(str1+=str2)</script>
4.格式化字符串变量
<script>str1="peace,happiness and prosperity.<br>"document.write(str1)document.write(str1.big())document.write(str1.small())document.write(str1.bold())document.write(str1.italics())document.write(str1.strike())document.write(str1.fontsize(6))document.write(str1.fontcolor(green))</script>
5.创建锚和链接
<script>str1="this is the bigginning of the page.<br>"str2="….<br>"str3="this is the end of the page .<br>"str4="link to the start<br>"str5="link to the end<br>"document.write(str1.anchor("start"))for(i=0;i<10;i++)document.write(str2);document.write(str3.anchor("end"))document.write(str4.link("#start"))document.write(str5.link("#end"))</script>
6.确定字符串长度
<script>str1="this is the bigginning of the page."document.write(str1+"<br>")document.write( "字符串的长度是:"+str1.length)document.write("字符串全部大写是;"+str1.toUpperCase())document.write("字符串全部小写是;"+str1.toLowerCase())</script>
7.在字符串内搜索
<script>str1="this is the end of the line.<br>"document.write(str1)document.write("字符end在字符串的位置是"+str1.search("end"))document.write("字符dog在字符串的位置是"+str1.search("dog"))</script>
8.定位字符串中的字符
<script>str1="spring is a time for flowers and trees and baby bunnles<br>"document.write(str1)document.write("the index for the second word ‘and' is"+str1.indexOf("and",30))documednt.write("the last index of the word ‘and' is "+str1.lastIndexOf("and"))</script>
9.替换字符串中的文本
<script>str1="spring is a time for flowers and trees and baby bunnles<br>"document.write(str1)document .write(str1.replace("and",","))</script>
10.字符串分离
<script>str1="spring is a time for flowers and trees and baby bunnles<br>"document.write(str1)str1array=str1.split(" ")document.write(str1array[0]+"<br>")document.write(str1array[1]+"<br>")document.write(str1array[2]+"<br>")document.write(str1array[3]+"<br>")</script>
第十章 使用日期和时间
1.使用Date对象
<script>cdate=new Date("august 2,1989 12:30:00")document.write(cdate)</script>
2.显示当地时间和日期
<script>cdate=new Date()document.write("当前时间是:"+cdate.toGMTString()+"<br>")document.write("日期和时间是:"+cdate.toLocaleString())</script>
3.获得时间和日期值
<script>cdate=new Date()document.write("显示当前的星期"+cdate.getDay()+"<br>")document.write("显示当前的月份"+cdate.getMonth()+"<br>")document.write("显示当前的日期"+cdate.getDay()+"<br>")document.write("显示当前的年份"+cdate.getYear()+"<br>")document.write("显示当前的小时"+cdate.getHours()+"<br>")document.write("显示当前的分钟"+cdate.getMinutes()+"<br>")document.write("显示当前的秒"+cdate.getSeconds()+"<br>")</script>
4.设置时间和日期值
<script language=javascript>cdate=new Date("December 25,1984")document.write("显示日期"+cdate+"<br>")document.write("设置月份"+cdate.setMonth(10)+"<br>")document.write("设置日期"+cdate.setDate(23)+"<br>")document.write("设置年份"+cdate.setYear(2000)+"<br>")document.write("设置小时"+cdate.setHours(13)+"<br>");document.write("设置分钟"+cdate.setMinutes(47)+"<br>");document.write("设置秒"+cdate.setSeconds(23)+"<br>");document.write("显示设置后的日期和时间"+cdate);</script>
第十一章 使用Math对象
1. 使用Math对象
<script language=javascript></script><form name=form1>圆的半径:<input type=text name=rad><br>圆的面积:<input type=text name=area><br><input type=button name=button1 value=计算圆的面积 οnclick=document.form1.area.value=document.form1.rad.value*document.form1.rad.value*Math.PI></form>
2.生成随机数
<script>array1=new Array("这是第1句","这是第2句","这是第3句","这是第4句","这是第5句","这是第6句")RandomNo=Math.floor(array1.length*Math.random())document.write("随机输出某一句"+"<br>"+array1[RandomNo])</script>
3.使用平方根
<form name=form1>value:<input type=text name=va1><br>平方根<input type=text name=sqrt><br><input type=button name=button1 value=计算平方根οnclick="document.form1.sqrt.value=Math.sqrt(document.form1.va1.value)"></form>
4.数字的舍入
<form name=form1>输入<input type=text name=val><br>舍入的结果<input type=text name=round><br><input type=button name=button1 value=计算结果 οnclick=document.form1.round.value=Math.round(document.form1.val.value)></form>
5.乘方运算
<form name=form1>底数<input type=text name=val><br>指数<input type=text name=power><br>幂<input type=text name=result><br><input type=button name=button1 value=计算结果 οnclick="document.form1.result.value=Math.pow (document.form1.val.value,document.form1.power.value)"></form>
6.发现最小值和最大值
<form name=form1>数字1<input type=text name=val1><br>数字2<input type=text name=val2><br>最小值<input type=text name=min><br>最大值<input type=text name=max><br>数字1<input type=button value=计算 οnclick="document.form1.min.value=Math.min (document.form1.val1.value,document.form1.val2.value);document.form1.max.value= Math.max(document.form1.val1.value,document.form1.val2.value)"></form>
第十二章 使用表单
1.使用文本框
<form name=form1><input type=text value="information ,please"name=text1></form><script>document.write("表单text1类型是: "+document.form1.text1.type+"<br>")document.write("表单text1名称是: "+document.form1.text1.name+"<br>")document.write("表单text1值是: "+document.form1.text1.value+"<br>")document.write("表单text1大小是: "+document.form1.text1.size+"<br>")</script>
<form name=form1><input type=text name=text1 value=click hereοnfοcus=document.form1.text1.select()></form>
2.使用密码框
<form name=form1><input type=password name=pw1 value=daylight></form><script>document.write("表单pw1的类型:"+document.form1.pw1.type+"<br>")document.write("表单pw1的名称:"+document.form1.pw1.name+"<br>")document.write("表单pw1的值:"+document.form1.pw1.value+"<br>")document.write("表单pw1的大小:"+document.form1.pw1.size+"<br>")</script>
3.使用隐藏字段
<form name=form1><input type=hidden name=hid1 value=piece of eight></form><script>document.write("表单hid1的类型:"+document.form1.hid1.type+"<br>")document.write("表单hid1的名称:"+document.form1.hid1.name+"<br>")document.write("表单hid1的值:"+document.form1.hid1.value+"<br>")</script>
4.使用文本区域框
<form name=form1><textarea name=ta1>how many grains of sand are there in the sahara desert?</textarea></form><script>document.write("表单ta1的类型:"+document.form1.ta1.type+"<br>")document.write("表单ta1的名称:"+document.form1.ta1.name+"<br>")document.write("表单ta1的值:"+document.form1.ta1.value+"<br>")document.write("表单ta1的横向宽度:"+document.form1.ta1.cols+"<br>")document.write("表单ta1的纵向宽度:"+document.form1.rows.value+"<br>")</script>
6.使用重置按钮
<form name=form1><input type=reset name=reset1 value="rest form"></form><script>document.write("表单reset1的类型:"+document.form1.reset1.type+"<br>")document.write("表单reset1的名称:"+document.form1.reset1.name+"<br>")document.write("表单reset1的值:"+document.form1.reset1.value+"<br>")</script>
7.使用提交按钮
<form name=form1><input type=submit name=submit1 value="submit form"></form><script>document.write("表单submit1的类型:"+document.form1.submit1.type+"<br>")document.write("表单submit1的名称:"+document.form1.submit1.name+"<br>")document.write("表单submit1的值:"+document.form1.submit1.value+"<br>")</script>
8.使用复选按钮
<form name=form1><input type=checkbox name=cb1 >computer savvy?</form><script>document.write("表单cb1的类型:"+document.form1.cb1.type+"<br>")document.write("表单cb1是否被选择?:"+document.form1.cb1.checked+"<br>")document.write("表单cb1的名称:"+document.form1.cb1.name+"<br>")</script>
9.使用单选按钮
<form name=form1><input type=radio name=radio1>male<input type=radio name=radio1>female</form><script>document.write("第一个按钮被选择"+document.form1.radio1[0].checked+"<br>")document.write("第二个按钮被选择"+document.form1.radio1[1].checked+"<br>")document.write("按钮的名称"+ document.form1.radio1[0].name+"<br>")document.write("按钮的个数"+document.form1.radio1.length)</script>
10.使用选择列表
<form name=form1><select name=select1 size=4><option name=option1 value=lon>london,England</option><option name=option2 value=dub>Dublin,Ireland</option></select></form><script>document.write("这个选择列表的名称"+document.form1.select1.name+"<br>")document.write("这个选择列表的长度"+document.form1.select1.length+"<br>")document.write("这个选择列表当前被选择的索引号"+document.form1.select1.selectedIndex+"<br>")document.write("这个选择列表的尺寸"+document.form1.select1.size+"<br>")</script>
11.验证表单的有效性
<script>function validate(){if(document.form1.text1.value!='1'||'2'||'3'||'4'){alert("请输入1~4的整数")}}</script><form name=form1>请输入1~4的整数:<input type=text name=text1 size=4 οnchange=validate()></form>
12.控制表单焦点
<form name=form1><input type=text name=text1 value=where is you focus?><br><input type=text name=text2 value=is there?><br><input type=text name=text3 value=or maybe here?><br><input type=button name=button1 value="text box #1" οnclick=document.form1.text1.focus()><br><input type=button name=button2 value="text box #2" οnclick=document.form1.text2.focus()><br><input type=button name=button3 value="text box #3" οnclick=document.form1.text3.focus()><br></form>
第十三章 使用分栏
第十四章 使用navigator
1.使用navigator对象
<script>document.write("navigator对象的属性"+"<br>")document.write("appcodename:"+navigator.appCodeName+"<br>")document.write("appname::"+navigator.appName+"<br>")document.write("appversion:"+navigator.appVersion+"<br>")document.write("platform:"+navigator.platform+"<br>")document.write("userAgent:"+navigator.userAgent+"<br>")</script><script>document.write("navigator对象的方法"+"<br>")document.write("javaEnabled():"+navigator.javaEnabled())</script>
2.检查用户的浏览器
<script>if(navigator.appName.indexOf("Microsoft")!=-1){document.write("用户浏览器是微软的IE浏览器"+"<br>")}else if(navigator.appName.indexOf("Netscape")!=-1){document.write("用户浏览器是netscape的netscape浏览器"+"<br>")}if(navigator.appVersion.indexOf("4.0")!=-1){document.write("you are using a version 4.0compatible browser")}else{document.write("this browser is not 4.0 compliant")}</script>
3.检测用户的操作系统
<script>if (navigator.platform.indexOf("win32")!=-1){document.write("you are using a computer running windows 95 or highter")}else{document.write("this computer is not running windows 95 or higher")}</script>
4.使用location对象
<script>document.write("location对象的属性"+"<br>")document.write("hash"+location.hash+"<br>")document.write("hostname"+location.hostname+"<br>")document.write("host"+location.host+"<br>")document.write("href"+location.href+"<br>")document.write("port"+location.port+"<br>")document.write("search"+location.search+"<br>")</script>
重新加载网页<form name=form1><input type=button name=button1 value=重新加载本页 οnclick=location.reload></form>
5.使用cookie
<script>finction makecookie(){if(!document.cookie){name=prompt("请输入你的姓名");document.cookie="name="+name+";";}}</script>
<body οnlοad=makecookie()><script>function makecookie(){if(!document.cookie){name=prompt("请输入你的姓名")document.cookie="name="+name+";";namestart=document.cookie.indexOf("="); nameend=document.cookieindexOf(";");document.writeln("your name is:"+document.cookie.substring(namestart+1,nameend)+",br>")}}</script>
