Chua bai thuc hanh

Tiêu đề: Chua bai thuc hanh Wed Aug 29, 2007 6:48 am

Code:: <html>
<head>
<meta>
<title>Untitled Document</title>
<script>
function cong(x, y)
{
x1 = parseFloat(x);
y1 = parseFloat(y);
var C;
C = x1 + y1;
form.ketqua.value=C;
//document.write("ket qua la: " + C);
}
function tru(x, y)
{
var C;
C = x - y;
//
form.ketqua.value=C;
// document.write("ket qua la: " + C);
}
function nhan(x, y)
{
var C;
C = x * y;
//document.write("ket qua la: " + C);
form.ketqua.value=C;
}
function chia(x, y)
{
var C;
C = x / y;
//document.write("ket qua la: " + C);
form.ketqua.value=C;
}
function kiemtra(x)
{
var a, s;
var counter=0;
for(a=2; a<x/2 ; a++)
{
if(x % a==0) counter++;
}

if(counter==0)
{
document.write("So: " + x + " la nguyen to");
}
else
{
document.write("So: " + x+ " khong phai la nguyen to");
}
}
</script>
</head>
<body>
<form>
<p>
Nhap so thu nhat: <input><br>
Nhap so thu hai:   <input><br>
</p>
<p>
<input>
<input>
<input>
<input>
</p>
<p>
Ket qua:   <input>
</p>
<Hr color="#FF0000">
Nhap so de kiem tra: <input><br>
<input>

</form>
</body>
</html>

Tiêu đề: Re: Chua bai thuc hanh Mon Sep 03, 2007 5:34 am

Bai sap xep danh sach ten

Code:: <html>
<head>
<title>Untitled Document</title>
<script>

var i=0, nhap;
names = new Array();
do
{
nhap = window.prompt("Ban hay nhap ten cua ban:");
if( nhap > " " && nhap != "undefined")

names[i]=nhap;
i=i+1;

}
while(nhap>" " && nhap!= "undefined");
names = names.sort();
document.write("<H2>" + (names.length) + "names entered.</H2>");
document.write("<ol> ");
for(var i in names){
document.write("<li> " + names[i] + "<br>");}
document.write("</ol>");

</script>
</head>
<body>
</body>
</html>

Tiêu đề: Re: Chua bai thuc hanh Mon Sep 03, 2007 7:00 am

Nhap va tinh ket qua:

Code:: <DOCTYPE>
<html>
<head>
<meta>
<title>Untitled Document</title>
<script>
function tinhtoan(x)
{
var y,n;
if(x=form.text_1.value)
{
y=x*2;
form.ketqua.value=y;
}
else if(x=form.ketqua.value)
{
n=x/2;
form.text_1.value=n;
}
if(form.binhphuong.checked)
{
y=x*x;
form.ketqua.value=y;
}
}
</script>
</head>
<body>
<form>
<p>
<input>
<input>
<input>
<input>
</p>
<p>
Nhap so: <input>
<input> Binh phuong <br><br>
Ket qua: <input>
</p>
</form>
</body>
</html>