【 tulaoshi.com - Web开发 】
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=2.5
answer3="Milkey May"
answer4=true
/script
2.使用整数
script language=javascript
var decimalNum,hexadecimalNum,octalNum
decimalNum=24
hexadecimalNum=0x24
octalNum=024
document.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,num4
num1=1234567890000.0
num2=5.14e23
num3=0.0000123456
num4=6.0254e3-4
document.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,answer2
answer1=true
answer2=false
document.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,str2
str1="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,answer4
answer1=9
answer2=2.5
answer3="milky may"
answer4=true
document.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=256
var str1=""+int1
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
9.声明数组
script
array=new Array(5)
array[0]=1
array[1]=3
array[2]=5
array[3]=7
array[4]=11
document.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]=1
array[1]=3
array[2]=5
array[3]=7
array[4]=11
document.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=12
var2=10
varadd=var1+var2
varsub=var1-var2
varmult=var1*var2
vardiv=var1/var2
varmod=var1%var2
document.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=1
document.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=28
if(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=28
if(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=25
if(month=="december" && date==25)
document.write("今天是圣诞节,商店关门")
else
document.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=1
while(count=15){
document.write("输出第"+count+"句" +"br")
count++}
/script
4.中断循环
script
count=1
while(count=15){
count++
if(count==8)
break;
document.write("输出第"+count+"句"+"br")}
/script
5.继续循环
script
count=1
while(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 onload=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=text1br
input type=text name=text2br
/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=text1br
input type=text name=text2br
input type=button name=button1 value=" 清除超时和间隔" onclick=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 onclick=document.form1.button1.value='there'
/form
2.检测双击
form name=form1
input type=button name=button1 value=hello onclick=document.form1.button1.value='你单击了按钮' ondblclick=document.form1.button1.value='你双击了该按钮'
/form
3.创建悬停按钮
img src=go.gif onmouseover=document.images[0].src='go2.gif' onmouseout= document.images[0].src='go.gif'
4.检测按键
form name=form1
input type=text name=text1 value=hello onkeypress="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=hello
onfous=document.form1.text1.value='该文本框获得焦点'
onblur=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=4
onChange=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 onload=document.form1.text1.value='页面加载完毕' onunload=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=ta1dfgfdgfdhfdhdfdfgdf/textarea
input type=button value="选择文本" onclick=document.form1.ta1.select()
input type=button value="显示文本" onclick=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" onclick=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="" 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 onload=document.images[0].src=freddy.src
,img src="blank.gif"
/body
11.改变图像
img src=freddy.gifbr
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1br
a href=http://www.microsoft.comMicrosoft/abr
a href=http://www.sohu.comsohu/abr
a href=http://www.sina.com.cnsina/abr
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.comlink/a
form name=form1
input type=button name=button1 value="改变链接" onclick=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" onclick=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 onload=window.status="欢迎光临我的站点"
a href=http://www.sohu.comsohu/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.comsohu/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" onclick=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 onclick=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…"onclick=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"onclick=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….."onclick=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"onclick=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")
else
document.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 startbr"
str5="link to the endbr"
document.write(str1.anchor("start"))
for(i=0;i10;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 bunnlesbr"
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 bunnlesbr"
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 bunnlesbr"
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=radbr
圆的面积:input type=text name=areabr
input type=button name=button1 value=计算圆的面积 onclick=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=va1br
平方根input type=text name=sqrtbr
input type=button name=button1 value=计算平方根
onclick="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=valbr
舍入的结果input type=text name=roundbr
input type=button name=button1 value=计算结果 onclick=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=valbr
指数input type=text name=powerbr
幂input type=text name=resultbr
input type=button name=button1 value=计算结果 onclick="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1input type=text name=val1br
数字2input type=text name=val2br
最小值input type=text name=minbr
最大值input type=text name=maxbr
数字1input type=button value=计算 onclick="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 here
onfocus=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=ta1how 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
form name=form1
textarea name=ta1 rows=4 onfocus="document.form1.ta1.select()" how many grains of sand are there in the sahara desert?/textarea
/form
5.使用按钮
form name=form1
input type=button name=button1 value=标准按钮
/form
script
document.write("表单button1的类型:"+document.form1.button1.type+"br")
document.write("表单button1的名称:"+document.form1.button1.name+"br")
document.write("表单button1的值:"+document.form1.button1.value+"br")
/script
form name=form1
input type=text name=text1 size=45br
input type=button name=button1 value=panic button onclick="document.form1.text1.value='sittle down,count to 10 and take a deep breath'"
/form
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=radio1male
input type=radio name=radio1female
/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=lonlondon,England/option
option name=option2 value=dubDublin,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 onchange=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" onclick=document.form1.text1.focus()br
input type=button name=button2 value="text box #2" onclick=document.form1.text2.focus()br
input type=button name=button3 value="text box #3" onclick=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 onclick=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 onload=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
