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清華大學(xué)出版的《事半功倍系列 javascript》,本人照著書敲出來的,有些翻譯了一下.前幾年看了一下,最近無事,重新翻了翻,很有幫助.本書應(yīng)該有光盤的,但學(xué)校的書,光盤不知在哪.希望對你學(xué) javascript有幫助
第一章javascript簡介
1.在地址欄輸入javascript語句
Javascript:Document.write("顯示文字")
2.將javascript嵌入 HTML文檔
<script language=javascript>
document.bgColor="blue"
</script>
第二章 使用變量和數(shù)組
1.聲明變量
<script language=javascripe>
Var answer1,answer2,answer3,answer4;
answer1=9;
answer2=2.5
answer3="Milkey May"
answer4=true
</script>
2.使用整數(shù)
<script language=javascript>
var decimalNum,hexadecimalNum,octalNum
decimalNum=24
hexadecimalNum=0x24
octalNum=024
document.write("顯示十進制數(shù)："+ decimalNum+"<br>")
document.write("顯示十六進制數(shù)："+ hexadecimalNum +"<br>")
document.write("顯示八進制數(shù)："+ octalNum +"<br>")
</script>
3.使用浮點數(shù)
<script language=javascript>
var num1,num2,num3,num4
num1=1234567890000.0
num2=5.14e23
num3=0.0000123456
num4=6.0254e3-4
document.write("浮點數(shù)1："+num1+"<br>")
document.write("浮點數(shù)2："+num2+"<br>")
document.write("浮點數(shù)3："+num3+"<br>")
document.write("浮點數(shù)4："+num4+"<br>")
</script>
4.使用布爾值
<script language=javascript>
var answer1,answer2
answer1=true
answer2=false
document.write("顯示布爾1："+answer1+"<br>")
document.write("顯示布爾2："+answer2+"<br>")
</script>
5.使用字符串
<script language=javascript>
var str1,str2
str1="fdsgdg dsfdsf china"
str2="武漢市廣播電視大學(xué)"
document.write("顯示字符串1："+str1+"<br>")
document.write("顯示字符串2："+str2+"<br>")
</script>
6.確定變量類型
<script>
var answer1,answer2,answer3,answer4
answer1=9
answer2=2.5
answer3="milky may"
answer4=true
document.write("變量1的類型是："+typeof answer1 +"<br>")
document.write("變量2的類型是："+typeof answer2 +"<br>")
document.write("變量3的類型是："+typeof answer3 +"<br>")
document.write("變量4的類型是："+typeof answer4 +"<br>")
</script>
7.將字符串轉(zhuǎn)換成數(shù)字
<script>
var str1="31 days in january"
var int1=parseInt(str1)
document.write("str1的數(shù)據(jù)類型是 ："+typeof str1+"<br>")
document.write("int1的數(shù)據(jù)類型是 ："+typeof int1+"<br>")
</script>
8.將數(shù)字轉(zhuǎn)換成字符串
<script>
var int1=256
var str1=""+int1
document.write("str1的數(shù)據(jù)類型是 ："+typeof str1+"<br>")
document.write("int1的數(shù)據(jù)類型是 ："+typeof int1+"<br>")
</script>
9.聲明數(shù)組
<script>
array=new Array(5)
array[0]=1
array[1]=3
array[2]=5
array[3]=7
array[4]=11
document.write("數(shù)組是："+array[0]+" "+array[1]+" "+array[2]+" "+array[3]+" "+array[4])
</script>
10.確定數(shù)組元素的個數(shù)
<script>
array=new Array(5)
array[0]=1
array[1]=3
array[2]=5
array[3]=7
array[4]=11
document.write("數(shù)組是："+array[0]+" "+array[1]+" "+array[2]+" "+array[3]+" "+array[4]+"<br>")
document.write("數(shù)組的元素個數(shù)是"+array.length)
</script>
11.將數(shù)組轉(zhuǎn)換為字符串
<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.對數(shù)組排序
<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 創(chuàng)建表達式
1.使用算術(shù)運算符
<script>
var1=12
var2=10
varadd=var1+var2
varsub=var1-var2
varmult=var1*var2
vardiv=var1/var2
varmod=var1%var2
document.write("數(shù)據(jù)1是："+var1+"<br>")
document.write("數(shù)據(jù)2是："+var2+"<br>")
document.write("數(shù)據(jù)相加是："+varadd+"<br>")
document.write("數(shù)據(jù)相減是："+varsub+"<br>")
document.write("數(shù)據(jù)相乘是："+varmult+"<br>")
document.write("數(shù)據(jù)相除是："+vardiv+"<br>")
document.write("數(shù)據(jù)相除取余數(shù)是："+varmod+"<br>")
</script>
2.遞增變量和遞減變量
<script>
days=1
document.write("輸出變量"+days+"<br>")
days++
document.write("遞增后變量變?yōu)椋?+days)
</script>
3.創(chuàng)建比較表達式
<script>
daysofmonth=28
if(daysofmonth==28)
month="february"
document.write("days of month:"+daysofmonth+"<br>")
document.write("month:"+month)
</script>
4.創(chuàng)建邏輯表達式
<script>
dayofmonth=28
if(dayofmonth==28 || dayofmonth==29)
month="february"
document.write("days of month:"+dayofmonth+"<br>")
document.write("month:"+month)
</script>
5.使用條件運算符
<script language="javascript">
stomach="hungry";
time="5:00";
(stomach=="hungry"&&time=="5:00") ? eat = "dinner":eat="a snack";
document.write("輸出結(jié)果"+eat);
</script>
6.識別數(shù)字
<script>
var1=24;
(isNaN(var1))?document.write("變量var1"+var1+"不是數(shù)字"):Document.write("變量var1"+var1+"是數(shù)字")
</script>
第四章 控制程序流程
1.使用IF –Else語句
<script>
month="december"
date=25
if(month=="december" && date==25)
document.write("今天是圣誕節(jié),商店關(guān)門")
else
document.write("歡迎,您來商店購物")
</script>
2.使用for 循環(huán)
<script>
for (count=1;count<=10;count++)
document.write("輸出第"+count+"句"+"<br>")
</script>
3.使用while循環(huán)
<script>
count=1
while(count<=15){
document.write("輸出第"+count+"句" +"<br>")
count++}
</script>
4.中斷循環(huán)
<script>
count=1
while(count<=15){
count++
if(count==8)
break;
document.write("輸出第"+count+"句"+"<br>")}
</script>
5.繼續(xù)循環(huán)
<script>
count=1
while(count<=15){
count++
if(count==8)
continue;
document.write("輸出第"+count+"句"+"<br>")}
</script>
6.使用javascript定時器
<script>
function rabbit()
{document.write("輸出語句")
}
</script>
<body onload=window.setTimeout(rabbit(),5000)>
7.設(shè)置定期間隔
<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.清除超時和間隔
<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=" 清除超時和間隔" onclick=clearInterval(stop)>
</form>
第五章 使用函數(shù)
1.聲明函數(shù)
<script>
function quote()
{ document.write("輸出語句")
}
</script>
2.調(diào)用函數(shù)
<script>
function quote()
{ document.write("輸出語句")
}
quote()
</script>
3.了解全局變量和局部變量
任何不用 var關(guān)鍵字聲明的變量都是全局變量,任何在函數(shù)外聲明的變量都是全局變量
4.將參數(shù)傳送給函數(shù)
<script>
function f(item)
{document.write("輸出參數(shù)"+item+"<br>")
}
f("fgdfgd")
f("參數(shù)二")
</script>
5.從函數(shù)返回值
<script>
function average(var1,var2,var3)
{ave=(var1+var2+var3)/3;
document.write("輸出結(jié)果");
return ave;
}
document.write(average(34,56,78))
</script>
6.通過HTML鏈接調(diào)用函數(shù)
<script>
function quote(){
document.write(" 輸出字符串")
}
</script>
<a href=javascript:quote()>通過HTML鏈接調(diào)用函數(shù)</a>
<a href=javascript:Document.write("輸出字符")> 通過HTML鏈接調(diào)用函數(shù),直接寫javascript語句</a>
第六章 處理事件
1.檢查鼠標單擊
<form name=form1>
<input type=button name=button1 value=hello onclick=document.form1.button1.value='there'>
</form>
2.檢測雙擊
<form name=form1>
<input type=button name=button1 value=hello onclick=document.form1.button1.value='你單擊了按鈕' ondblclick=document.form1.button1.value='你雙擊了該按鈕'>
</form>
3.創(chuàng)建懸停按鈕
<img src=go.gif onmouseover=document.images[0].src='go2.gif' onmouseout= document.images[0].src='go.gif'>
4.檢測按鍵
<form name=form1>
<input type=text name=text1 value=hello onkeypress="if(window.event.keyCode=='100') document.form1.text1.value='你按了d鍵'">
</form>
5.設(shè)置焦點
<form name=form1>
<input type=text name=text1 value=hello
onfous=document.form1.text1.value='該文本框獲得焦點'
onblur=document.form1.text1.value='該文本框失去焦點'>
</form>
6.檢測下拉菜單選擇
<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="武漢">武漢</option>
<option value="天津">天津</option>
<option value="大連">大連</option>
</select>
<input tppe=text name=text1 value=hello>
</form>
7.創(chuàng)建網(wǎng)頁加載和卸載信息
<body onload=document.form1.text1.value='頁面加載完畢' onunload=alert('再見,歡迎再來')>
<form name=form1>
<input type=text name=text1 value="頁面正在加載 ……">
</form>
第七章 使用對象
1.理解對象/屬性和方法
<body bgcolor="green">
<script>
document.write("頁面背景顏色是:"+document.bgColor)
document.write("頁面前景顏色是:"+document.fgColor)
</script>
2.使用網(wǎng)頁元素對象
<script>
</script>
<form name=form1>
<textarea name=ta1>dfgfdgfdhfdhdfdfgdf</textarea>
<input type=button value="選擇文本" onclick=document.form1.ta1.select()>
<input type=button value="顯示文本" onclick=document.write(document.form1.ta1.value)>
</form>
3.使用子對象
<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.使用預(yù)定義對象
<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("輸出圓的面積:"+Math.PI*Math.pow(5.0,2))
</script>
5.創(chuàng)建新對象
<script>
today=new Date()
document.write("今天是"+(today.getMonth()+1)+"月"+today.getDate()+"日"+"<br>")
document.write("現(xiàn)在是:"+today.toLocaleString())
</script>
6.引用當前對象
<form name=form1>
<input type=text name=text1 value="dgdgdfgfd" onclick=this.select()>
</script>
7.查看對象屬性
<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對象
<script>
array=new Array(10)
array[0]="bark"
array[1]="apple"
array[2]="nebula"
array[3]="cookie"
array[4]="technology"
document.write("數(shù)組元素個數(shù)是"+array.Length+"<br>")
document.write("用 join將數(shù)組合并"+array.join(" ")+"<br>")
document.write(" 數(shù)組排序"+array.sort())
</script>
9.使用 image 對象
<img src=**.gif alt="圖片提示…." border=10>
<script>
document.write("圖片提示是:"+document.images[0].alt+"<br>")
document.write("圖片邊框大小是:"+document.images[0].broder)
</script>
10.預(yù)加載圖像
<script>
freddy=new Image()
freddy.src=freddy.gif
</script>
<body onload=document.images[0].src=freddy.src>
,<img src="blank.gif">
</body>
11.改變圖像
<img src=freddy.gif><br>
<form name=form1>
<input type=button name=button1 value="改變圖像" onclickd=document.images[0].src=dudjp.gif>
</form>
12.使用link和anchor對象
<a name=anchor1>錨點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("本頁面共有"+document.links.length+"鏈接"+"<br>")
document.write("本頁面共有"+document.anchors.length+"錨點"+"<br>")
document.write("第一個鏈接協(xié)議是"+document.links[0].protocol+"<br>")
document.write("第一個鏈接路徑是"+document.links[0].pathnamel+"<br>")
document.write("第一個鏈接href是"+document.links[0].hrefl+"<br>")
</script>
13.改變鏈接
<a href =http://www.microsoft.com>link</a>
<form name=form1>
<input type=button name=button1 value="改變鏈接" onclick=document.links[0].>
</form>
14.使用history對象
<form name=form1>
<input type=button name=button1 value="向后返回2頁" onclick=window.history.go(-2)>
</form>
第八章 使用窗口
1.在瀏覽器的狀態(tài)欄上顯示文本
<body onload=window.status="歡迎光臨我的站點">
<a href=http://www.sohu.com>sohu</a>
</body>
2.改變背景色
<script>
document.bgColor="orange"
</script>
3.列舉背景顏色
<body bgColor =green>
<script>
document.write("當前背景色是:"+document.bgColor)
</script>
</body>
4.改變文本和鏈接顏色
<script>
document.bgColor="orange"
document.fgColor="blue"
document.linkColor="red"
</script>
<h2>看看這段文本顏色</h2>
<a href=http://www.sohu.com>sohu</a>
</body>
5.改變文檔標題
<script>
name="Mouse"
document.title="welcome to "+name+"'s House"
document.write(document.title)
</script>
6.顯示修改日期
<script>
document.write("本頁面最后修改時間是"+document.lastModified)
</script>
7.查看當前文檔的URL
<script>
document.write("本頁面的URL:"+document.URL)
</script>
8.查看引用頁
<script>
document.write("本頁面的引用頁是"+document.referrer)
</script>
9.打開新的瀏覽器窗口
<script>
window.open("*.htm","title","width=200,height=400,resizable=yes")
</script>
10.關(guān)閉遠程窗口
close.html:
<script>
document.write("正文")
</script>
<form name=form1>
<input type=button name=button1value="關(guān)閉" 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.移動窗口
<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="移動窗口到…"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="移動窗口"onclick=window.moveBy(document.form1.x.value,document.form1.y.value)>
</form>
13.改變窗口大小
<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="改變窗口大小到….."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="改變窗口大小"onclick=window.resizeBy(document.form1.x.value,document.form1.y.value)>
</form>
14.用警告對話框通知用戶
<script>
window.alert("welcome")
</script>
15.用提示對話框接受輸入
<script>
name=window.prompt("輸入姓名","姓名")
document.write(" 歡迎您:"+name+"來到這里")
</script>
16.用確認對話框使用戶做出決定
<script>
like=window.confirm("你覺得好嗎?")
if(like==true)
document.write("謝謝你的夸獎")
else
document.write("希望得到你的夸獎")
</script>
第九章 使用字符串
1.使用字符串對象
<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.連接字符串
<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.格式化字符串變量
<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.創(chuàng)建錨和鏈接
<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.確定字符串長度
<script>
str1="this is the bigginning of the page."
document.write(str1+"<br>")
document.write( "字符串的長度是:"+str1.length)
document.write("字符串全部大寫是;"+str1.toUpperCase())
document.write("字符串全部小寫是;"+str1.toLowerCase())
</script>
7.在字符串內(nèi)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 ‘a(chǎn)nd' is"+str1.indexOf("and",30))
documednt.write("the last index of the word ‘a(chǎn)nd' is "+str1.lastIndexOf("and"))
</script>
9.替換字符串中的文本
<script>
str1="spring is a time for flowers and trees and baby bunnles<br>"
document.write(str1)
document .write(str1.replace("and",","))
</script>
10.字符串分離
<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 使用日期和時間
1.使用Date對象
<script>
cdate=new Date("august 2,1989 12:30:00")
document.write(cdate)
</script>
2.顯示當?shù)貢r間和日期
<script>
cdate=new Date()
document.write("當前時間是:"+cdate.toGMTString()+"<br>")
document.write("日期和時間是:"+cdate.toLocaleString())
</script>
3.獲得時間和日期值
<script>
cdate=new Date()
document.write("顯示當前的星期"+cdate.getDay()+"<br>")
document.write("顯示當前的月份"+cdate.getMonth()+"<br>")
document.write("顯示當前的日期"+cdate.getDay()+"<br>")
document.write("顯示當前的年份"+cdate.getYear()+"<br>")
document.write("顯示當前的小時"+cdate.getHours()+"<br>")
document.write("顯示當前的分鐘"+cdate.getMinutes()+"<br>")
document.write("顯示當前的秒"+cdate.getSeconds()+"<br>")
</script>
4.設(shè)置時間和日期值
<script language=javascript>
cdate=new Date("December 25,1984")
document.write("顯示日期"+cdate+"<br>")
document.write("設(shè)置月份"+cdate.setMonth(10)+"<br>")
document.write("設(shè)置日期"+cdate.setDate(23)+"<br>")
document.write("設(shè)置年份"+cdate.setYear(2000)+"<br>")
document.write("設(shè)置小時"+cdate.setHours(13)+"<br>");
document.write("設(shè)置分鐘"+cdate.setMinutes(47)+"<br>");
document.write("設(shè)置秒"+cdate.setSeconds(23)+"<br>");
document.write("顯示設(shè)置后的日期和時間"+cdate);
</script>
第十一章 使用Math對象
1. 使用Math對象
<script language=javascript>
</script>
<form name=form1>
圓的半徑:<input type=text name=rad><br>
圓的面積:<input type=text name=area><br>
<input type=button name=button1 value=計算圓的面積 onclick=document.form1.area.value=document.form1.rad.value*document.
form1.rad.value*Math.PI>
</form>
2.生成隨機數(shù)
<script>
array1=new Array(
"這是第1句",
"這是第2句",
"這是第3句",
"這是第4句",
"這是第5句",
"這是第6句")
RandomNo=Math.floor(array1.length*Math.random())
document.write("隨機輸出某一句"+"<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=計算平方根
onclick="document.form1.sqrt.value=Math.sqrt(document.form1.va1.value)">
</form>
4.數(shù)字的舍入
<form name=form1>
輸入<input type=text name=val><br>
舍入的結(jié)果<input type=text name=round><br>
<input type=button name=button1 value=計算結(jié)果 onclick=document.form1.round.value=Math.round(document.form1.val.value)>
</form>
5.乘方運算
<form name=form1>
底數(shù)<input type=text name=val><br>
指數(shù)<input type=text name=power><br>
冪<input type=text name=result><br>
<input type=button name=button1 value=計算結(jié)果 onclick="document.form1.result.value=Math.pow (document.form1.val.value,document.form1.power.value)">
</form>
6.發(fā)現(xiàn)最小值和最大值
<form name=form1>
數(shù)字1<input type=text name=val1><br>
數(shù)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>
數(shù)字1<input type=button value=計算 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 使用表單
1.使用文本框
<form name=form1>
<input type=text value="information ,please"name=text1>
</form>
<script>
document.write("表單text1類型是: "+document.form1.text1.type+"<br>")
document.write("表單text1名稱是: "+document.form1.text1.name+"<br>")
document.write("表單text1值是: "+document.form1.text1.value+"<br>")
document.write("表單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.使用密碼框
<form name=form1>
<input type=password name=pw1 value=daylight>
</form>
<script>
document.write("表單pw1的類型:"+document.form1.pw1.type+"<br>")
document.write("表單pw1的名稱:"+document.form1.pw1.name+"<br>")
document.write("表單pw1的值:"+document.form1.pw1.value+"<br>")
document.write("表單pw1的大小:"+document.form1.pw1.size+"<br>")
</script>
3.使用隱藏字段
<form name=form1>
<input type=hidden name=hid1 value=piece of eight>
</form>
<script>
document.write("表單hid1的類型:"+document.form1.hid1.type+"<br>")
document.write("表單hid1的名稱:"+document.form1.hid1.name+"<br>")
document.write("表單hid1的值:"+document.form1.hid1.value+"<br>")
</script>
4.使用文本區(qū)域框
<form name=form1>
<textarea name=ta1>how many grains of sand are there in the sahara desert?</textarea>
</form>
<script>
document.write("表單ta1的類型:"+document.form1.ta1.type+"<br>")
document.write("表單ta1的名稱:"+document.form1.ta1.name+"<br>")
document.write("表單ta1的值:"+document.form1.ta1.value+"<br>")
document.write("表單ta1的橫向?qū)挾?"+document.form1.ta1.cols+"<br>")
document.write("表單ta1的縱向?qū)挾?"+document.form1.rows.value+"<br>")
</script>
6.使用重置按鈕
<form name=form1>
<input type=reset name=reset1 value="rest form">
</form>
<script>
document.write("表單reset1的類型:"+document.form1.reset1.type+"<br>")
document.write("表單reset1的名稱:"+document.form1.reset1.name+"<br>")
document.write("表單reset1的值:"+document.form1.reset1.value+"<br>")
</script>
7.使用提交按鈕
<form name=form1>
<input type=submit name=submit1 value="submit form">
</form>
<script>
document.write("表單submit1的類型:"+document.form1.submit1.type+"<br>")
document.write("表單submit1的名稱:"+document.form1.submit1.name+"<br>")
document.write("表單submit1的值:"+document.form1.submit1.value+"<br>")
</script>
8.使用復(fù)選按鈕
<form name=form1>
<input type=checkbox name=cb1 >computer savvy?
</form>
<script>
document.write("表單cb1的類型:"+document.form1.cb1.type+"<br>")
document.write("表單cb1是否被選擇?:"+document.form1.cb1.checked+"<br>")
document.write("表單cb1的名稱:"+document.form1.cb1.name+"<br>")
</script>
9.使用單選按鈕
<form name=form1>
<input type=radio name=radio1>male
<input type=radio name=radio1>female
</form>
<script>
document.write("第一個按鈕被選擇"+document.form1.radio1[0].checked+"<br>")
document.write("第二個按鈕被選擇"+document.form1.radio1[1].checked+"<br>")
document.write("按鈕的名稱"+ document.form1.radio1[0].name+"<br>")
document.write("按鈕的個數(shù)"+document.form1.radio1.length)
</script>
10.使用選擇列表
<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("這個選擇列表的名稱"+document.form1.select1.name+"<br>")
document.write("這個選擇列表的長度"+document.form1.select1.length+"<br>")
document.write("這個選擇列表當前被選擇的索引號"+document.form1.select1.selectedIndex+"<br>")
document.write("這個選擇列表的尺寸"+document.form1.select1.size+"<br>")
</script>
11.驗證表單的有效性
<script>
function validate(){
if(document.form1.text1.value!='1'||'2'||'3'||'4'){
alert("請輸入1~4的整數(shù)")
}
}
</script>
<form name=form1>
請輸入1~4的整數(shù):
<input type=text name=text1 size=4 onchange=validate()>
</form>
12.控制表單焦點
<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 使用分欄
第十四章 使用navigator
1.使用navigator對象
<script>
document.write("navigator對象的屬性"+"<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對象的方法"+"<br>")
document.write("javaEnabled():"+navigator.javaEnabled())
</script>
2.檢查用戶的瀏覽器
<script>
if(navigator.appName.indexOf("Microsoft")!=-1){
document.write("用戶瀏覽器是微軟的IE瀏覽器"+"<br>")}
else if(navigator.appName.indexOf("Netscape")!=-1){
document.write("用戶瀏覽器是netscape的netscape瀏覽器"+"<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.檢測用戶的操作系統(tǒng)
<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對象
<script>
document.write("location對象的屬性"+"<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>
重新加載網(wǎng)頁
<form name=form1>
<input type=button name=button1 value=重新加載本頁 onclick=location.reload>
</form>
5.使用cookie
<script>
finction makecookie(){
if(!document.cookie){
name=prompt("請輸入你的姓名");
document.cookie="name="+name+";";}
}
</script>
<body onload=makecookie()>
<script>
function makecookie(){
if(!document.cookie){
name=prompt("請輸入你的姓名")
document.cookie="name="+name+";";
namestart=document.cookie.indexOf("=");
nameend=document.cookieindexOf(";");
document.writeln("your name is:"+document.cookie.substring(namestart+1,nameend)+",br>")
}
}
</script>
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