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
document.bgColor="blue"
script>
第二章 使用变量和数组
1.声明变量
Var answer1,answer2,answer3,answer4;
answer1=9;
answer2=2.5
answer3="Milkey May"
answer4=true
script>
2.使用整数
var decimalNum,hexadecimalNum,octalNum
decimalNum=24
hexadecimalNum=0x24
octalNum=024
document.write("显示十进制数:"+ decimalNum+"
")
document.write("显示十六进制数:"+ hexadecimalNum +"
")
document.write("显示八进制数:"+ octalNum +"
")
script>
3.使用浮点数
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+"
")
document.write("浮点数2:"+num2+"
")
document.write("浮点数3:"+num3+"
")
document.write("浮点数4:"+num4+"
")
script>
4.使用布尔值
var answer1,answer2
answer1=true
answer2=false
document.write("显示布尔1:"+answer1+"
")
document.write("显示布尔2:"+answer2+"
")
script>
5.使用字符串
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+"
")
document.write("显示字符串2:"+str2+"
")
script>
6.确定变量类型
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 +"
")
document.write("变量2的类型是:"+typeof answer2 +"
")
document.write("变量3的类型是:"+typeof answer3 +"
")
document.write("变量4的类型是:"+typeof answer4 +"
")
script>
7.将字符串转换成数字
var str1="31 days in january"
var int1=parseInt(str1)
document.write("str1的数据类型是 :"+typeof str1+"
")
document.write("int1的数据类型是 :"+typeof int1+"
")
script>
8.将数字转换成字符串
var int1=256
var str1=""+int1
document.write("str1的数据类型是 :"+typeof str1+"
")
document.write("int1的数据类型是 :"+typeof int1+"
")
script>
9.声明数组
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
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]+"
")
document.write("数组的元素个数是"+array.length)
script>
11.将数组转换为字符串
array=new Array()
array[0]="dark"
array[1]="apple"
array[2]="nebula"
array[3]="water"
str1=array.join()
str2=array.join(" ")
document.write(str1+"
")
document.write(str2)
script>
12.对数组排序
array=new Array()
array[0]="dark"
array[1]="apple"
array[2]="nebula"
array[3]="water"
str1=array.sort()
document.write(str1+"
")
script>
第三章 创建表达式
1.使用算术运算符
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+"
")
document.write("数据2是:"+var2+"
")
document.write("数据相加是:"+varadd+"
")
document.write("数据相减是:"+varsub+"
")
document.write("数据相乘是:"+varmult+"
")
document.write("数据相除是:"+vardiv+"
")
document.write("数据相除取余数是:"+varmod+"
")
script>
2.递增变量和递减变量
输出变量"+days+"
")
days++
document.write("递增后变量变为:"+days)
script>
3.创建比较表达式
daysofmonth=28
if(daysofmonth==28)
month="february"
document.write("days of month:"+daysofmonth+"
")
document.write("month:"+month)
script>
4.创建逻辑表达式
dayofmonth=28
if(dayofmonth==28 || dayofmonth==29)
month="february"
document.write("days of month:"+dayofmonth+"
")
document.write("month:"+month)
script>
5.使用条件运算符
输出结果"+eat);
script>
6.识别数字
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
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
输出第"+count+"句"+"
")
script>
3.使用while循环
输出第"+count+"句" +"
")
count++}
script>
4.中断循环
输出第"+count+"句"+"
")}
script>
5.继续循环
输出第"+count+"句"+"
")}
script>
6.使用javascript定时器
输出语句")
}
script>
12.使用link和anchor对象
锚点1
Microsoft
sohu
sina
document.write("本页面共有"+document.links.length+"链接"+"
")
document.write("本页面共有"+document.anchors.length+"锚点"+"
")
document.write("第一个链接协议是"+document.links[0].protocol+"
")
document.write("第一个链接路径是"+document.links[0].pathnamel+"
")
document.write("第一个链接href是"+document.links[0].hrefl+"
")
script>
13.改变链接
link
14.使用history对象
第八章 使用窗口
1.在浏览器的状态栏上显示文本
open.html
window.open("close.html","romote","width=200,height=400,resizable=yes")
script>
11.打印窗口
document.write("正文")
script>
12.移动窗口
13.改变窗口大小
14.用警告对话框通知用户
window.alert("welcome")
script>
15.用提示对话框接受输入
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
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
mystring="gdgdfgfddddaaaaaaaaaaaabbbbbbbbbbbbbbbbbvbhg.
"
document.write(mystring)
document.write(mystring.bold())
document.write(mystring.toUpperCase())
script>
2.使用子字符串
str1="fdsf 1111 gfdgfd dfdsf cccc dddd.
"
document.write(str1)
document.write(str1.substring(0,13)+"
")
document.write(str1.substr (20,11)+"
")
script>
3.连接字符串
str1="may you find"
str2="peace,happiness and prosperity.
"
document.write(str1+"
")
document.write(str2)
document.write(str1.concat(str2))
document.write(str1+=str2)
script>
4.格式化字符串变量
str1="peace,happiness and prosperity.
"
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
str1="this is the bigginning of the page.
"
str2="….
"
str3="this is the end of the page .
"
str4="link to the start
"
str5="link to the end
"
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
str1="this is the bigginning of the page."
document.write(str1+"
")
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
str1="this is the end of the line.
"
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
str1="spring is a time for flowers and trees and baby bunnles
"
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
str1="spring is a time for flowers and trees and baby bunnles
"
document.write(str1)
document .write(str1.replace("and",","))
script>
10.字符串分离
str1="spring is a time for flowers and trees and baby bunnles
"
document.write(str1)
str1array=str1.split(" ")
document.write(str1array[0]+"
")
document.write(str1array[1]+"
")
document.write(str1array[2]+"
")
document.write(str1array[3]+"
")
script>
第十章 使用日期和时间
1.使用Date对象
cdate=new Date("august 2,1989 12:30:00")
document.write(cdate)
script>
2.显示当地时间和日期
cdate=new Date()
document.write("当前时间是:"+cdate.toGMTString()+"
")
document.write("日期和时间是:"+cdate.toLocaleString())
script>
3.获得时间和日期值
cdate=new Date()
document.write("显示当前的星期"+cdate.getDay()+"
")
document.write("显示当前的月份"+cdate.getMonth()+"
")
document.write("显示当前的日期"+cdate.getDay()+"
")
document.write("显示当前的年份"+cdate.getYear()+"
")
document.write("显示当前的小时"+cdate.getHours()+"
")
document.write("显示当前的分钟"+cdate.getMinutes()+"
")
document.write("显示当前的秒"+cdate.getSeconds()+"
")
script>
4.设置时间和日期值
cdate=new Date("December 25,1984")
document.write("显示日期"+cdate+"
")
document.write("设置月份"+cdate.setMonth(10)+"
")
document.write("设置日期"+cdate.setDate(23)+"
")
document.write("设置年份"+cdate.setYear(2000)+"
")
document.write("设置小时"+cdate.setHours(13)+"
");
document.write("设置分钟"+cdate.setMinutes(47)+"
");
document.write("设置秒"+cdate.setSeconds(23)+"
");
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>
2.生成随机数
输出某一句"+"
"+array1[RandomNo])
script>
3.使用平方根
4.数字的舍入
5.乘方运算
6.发现最小值和最大值
第十二章 使用表单
1.使用文本框
document.write("表单text1类型是: "+document.form1.text1.type+"
")
document.write("表单text1名称是: "+document.form1.text1.name+"
")
document.write("表单text1值是: "+document.form1.text1.value+"
")
document.write("表单text1大小是: "+document.form1.text1.size+"
")
script>
2.使用密码框
document.write("表单pw1的类型:"+document.form1.pw1.type+"
")
document.write("表单pw1的名称:"+document.form1.pw1.name+"
")
document.write("表单pw1的值:"+document.form1.pw1.value+"
")
document.write("表单pw1的大小:"+document.form1.pw1.size+"
")
script>
3.使用隐藏字段
document.write("表单hid1的类型:"+document.form1.hid1.type+"
")
document.write("表单hid1的名称:"+document.form1.hid1.name+"
")
document.write("表单hid1的值:"+document.form1.hid1.value+"
")
script>
4.使用文本区域框
document.write("表单ta1的类型:"+document.form1.ta1.type+"
")
document.write("表单ta1的名称:"+document.form1.ta1.name+"
")
document.write("表单ta1的值:"+document.form1.ta1.value+"
")
document.write("表单ta1的横向宽度:"+document.form1.ta1.cols+"
")
document.write("表单ta1的纵向宽度:"+document.form1.rows.value+"
")
script>
5.使用按钮
document.write("表单button1的类型:"+document.form1.button1.type+"
")
document.write("表单button1的名称:"+document.form1.button1.name+"
")
document.write("表单button1的值:"+document.form1.button1.value+"
")
script>
6.使用重置按钮
document.write("表单reset1的类型:"+document.form1.reset1.type+"
")
document.write("表单reset1的名称:"+document.form1.reset1.name+"
")
document.write("表单reset1的值:"+document.form1.reset1.value+"
")
script>
7.使用提交按钮
document.write("表单submit1的类型:"+document.form1.submit1.type+"
")
document.write("表单submit1的名称:"+document.form1.submit1.name+"
")
document.write("表单submit1的值:"+document.form1.submit1.value+"
")
script>
8.使用复选按钮
document.write("表单cb1的类型:"+document.form1.cb1.type+"
")
document.write("表单cb1是否被选择?:"+document.form1.cb1.checked+"
")
document.write("表单cb1的名称:"+document.form1.cb1.name+"
")
script>
9.使用单选按钮
document.write("第一个按钮被选择"+document.form1.radio1[0].checked+"
")
document.write("第二个按钮被选择"+document.form1.radio1[1].checked+"
")
document.write("按钮的名称"+ document.form1.radio1[0].name+"
")
document.write("按钮的个数"+document.form1.radio1.length)
script>
10.使用选择列表
document.write("这个选择列表的名称"+document.form1.select1.name+"
")
document.write("这个选择列表的长度"+document.form1.select1.length+"
")
document.write("这个选择列表当前被选择的索引号"+document.form1.select1.selectedIndex+"
")
document.write("这个选择列表的尺寸"+document.form1.select1.size+"
")
script>
11.验证表单的有效性
function validate(){
if(document.form1.text1.value!='1'||'2'||'3'||'4'){
alert("请输入1~4的整数")
}
}
script>
12.控制表单焦点
第十三章 使用分栏
第十四章 使用navigator
1.使用navigator对象
document.write("navigator对象的属性"+"
")
document.write("appcodename:"+navigator.appCodeName+"
")
document.write("appname::"+navigator.appName+"
")
document.write("appversion:"+navigator.appVersion+"
")
document.write("platform:"+navigator.platform+"
")
document.write("userAgent:"+navigator.userAgent+"
")
script>
document.write("navigator对象的方法"+"
")
document.write("javaEnabled():"+navigator.javaEnabled())
script>
2.检查用户的浏览器
if(navigator.appName.indexOf("Microsoft")!=-1){
document.write("用户浏览器是微软的IE浏览器"+"
")}
else if(navigator.appName.indexOf("Netscape")!=-1){
document.write("用户浏览器是netscape的netscape浏览器"+"
")}
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
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
document.write("location对象的属性"+"
")
document.write("hash"+location.hash+"
")
document.write("hostname"+location.hostname+"
")
document.write("host"+location.host+"
")
document.write("href"+location.href+"
")
document.write("port"+location.port+"
")
document.write("search"+location.search+"
")
script>
重新加载网页
5.使用cookie
finction makecookie(){
if(!document.cookie){
name=prompt("请输入你的姓名");
document.cookie="name="+name+";";}
}
script>