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
<script language=javascript>
var decimalNum,hexadecimalNum,octalNum
decimalNum=24
hexadecimalNum=0x24
octalNum=024
document.write("顯示十進制數："+ decimalNum+"<br>")
document.write("顯示十六進制數："+ hexadecimalNum +"<br>")
document.write("顯示八進制數："+ octalNum +"<br>")
</script>
3.使用浮點數
<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1："+num1+"<br>")
document.write("浮點數2："+num2+"<br>")
document.write("浮點數3："+num3+"<br>")
document.write("浮點數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"
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.將字符串轉換成數字
<script>
var str1="31 days in january"
var int1=parseInt(str1)
document.write("str1的數據類型是 ："+typeof str1+"<br>")
document.write("int1的數據類型是 ："+typeof int1+"<br>")
</script>
8.將數字轉換成字符串
<script>
var int1=256
var str1=""+int1
document.write("str1的數據類型是 ："+typeof str1+"<br>")
document.write("int1的數據類型是 ："+typeof int1+"<br>")
</script>
9.聲明數組
<script>
array=new Array(5)
array[0]=1
array[1]=3
array[2]=5
array[3]=7
array[4]=11
document.write("數組是："+array[0]+" "+array[1]+" "+array[2]+" "+array[3]+" "+array[4])
</script>
10.確定數組元素的個數
<script>
array=new Array(5)
array[0]=1
array[1]=3
array[2]=5
array[3]=7
array[4]=11
document.write("數組是："+array[0]+" "+array[1]+" "+array[2]+" "+array[3]+" "+array[4]+"<br>")
document.write("數組的元素個數是"+array.length)
</script>
11.將數組轉換為字符串
<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 創建表達式
1.使用算術運算符
<script>
var1=12
var2=10
varadd=var1+var2
varsub=var1-var2
varmult=var1*var2
vardiv=var1/var2
varmod=var1%var2
document.write("數據1是："+var1+"<br>")
document.write("數據2是："+var2+"<br>")