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Saturday, September 3, 2011

How to use document.write in JavaScript?

Hello guys, Today I am sharing very basic method of javascript which is "document.write()".
Using document.write you can write inside a html document using javascript.

A very basic hello world example is below:

To understand document.write function in more depth, I am sharing few more simple usage of this function.

var sampleText="Sample Example of Document.write function";

document.write("<p>"+sampleText+"</p>");

</script>

Printing date using document.write function:

var sampleText="Sample Example of Document.write function";

document.write("<p>"+Date()+"</p>");

</script>

Using document.write function inside a function:

function f1() {

document.write('hello world');

}

</script>

f1();

document.write('Ba Bye');

</script>

Overriding whole document's content using document.write function:

function f1() {

document.write('Some text');//for overwrite entire page content

}

window.onload = w1;

</script>

I hope you like this post. Please share your feedback by commenting below.

Friday, December 10, 2010

C program for matrix multiplication of two matrix

Hello everybody I want to discuss the source code for matrix multiplication in c programming.

Program Code


//C program for multiplication of two matrix
#include < stdio.h >
#include < conio.h >
void main()
{
 int a[3][3], b[3][3], c[3][3], i, j, k;
 clrscr();
 printf("Enter the elements of first 3x3 matrix");
 for (i = 0;i < 3; i++)
 {
  for (j = 0; j < 3; j++)
  {
   scanf("%d",&a[i][j]);
  }
 }
 printf("\nEnter the elements of second 3x3 matrix");
 for(i = 0; i < 3; i++)
 {
  for (j = 0; j < 3; j++)
  {
   scanf("%d", &b[i][j]);
  }
 }
 printf("\nThe first matrix is :-\n");
 for (i = 0; i < 3; i++)
 {
  for (j = 0; j < 3; j++)
  {
   printf("\t%d", a[i][j]);
  }
  printf("\n");
 }
 printf("\nThe second matrix is :-\n");
 for (i = 0; i < 3; i++)
 {
  for (j = 0; j < 3; j++)
  {
   printf("\t%d", b[i][j]);
  }
  printf("\n");
 }

 printf("\nMultiplication of the two matrices is as follows:\n");
 for (i = 0;i < 3; i++)
 {
  printf("\n");
  for (j = 0; j < 3; j++)
  {
   c[i][j]=0;
   for(k=0;k<3;k++)
   c[i][j] = c[i][j]+a[i][k] * b[k][j];
   printf("\t%d", c[i][j]);
  }
 }
 getch();
}

Input :

Enter the elements of first 3x3 matrix

1
2
3
4
5
6
7
8
9
Enter the elements of second 3x3 matrix
1
2
3
4
5
6
7
8
9

Output :

Multiplication of the two matrices is as follows

30 36 42
66 81 96
102 126 150

Thursday, December 9, 2010

Javascript for find greatest and smallest among three numbers

Hello I want to discuss the code for find greatest and smallest from 3 numbers using javascript.

HTML CODE


<html>
<head>
<title>
Javascript Program to find greatest and smallest from 3 numbers
<script language="javascript">
function greater()
{
var num1=parseInt(document.f1.t1.value);
var num2=parseInt(document.f1.t2.value);
var num3=parseInt(document.f1.t3.value);
if(num1>num2 && num1>num3)
{
alert(num1 +"  is greatest number");
}
else if(num2>num1 && num2>num3)
{
alert(num2 +"  is greatest number");
}
else
{
alert(num3 +"  is greatest number");
}
}
function smaller()
{
var num1=parseInt(document.f1.t1.value);
var num2=parseInt(document.f1.t2.value);
var num3=parseInt(document.f1.t3.value);
if(num1<num2 && num1<num3)
{
alert(num1 +"  is smallest number");
}
else if(num2<num1 && num2<num3)

{
alert(num2 +"  is smallest number");
}
else
{
alert(num3 +"  is smallest number");
}
}
</script>
</head>
<body>
<h1 align="center"><font color="red">Javascript for find greatest and smallest</font></h1>
<form name=f1>
num1: <input type="textbox" name=t1><br>
num2: <input type="textbox" name=t2><br>
num3: <input type="textbox" name=t3><br><br><br>
<input type="button" value="greatest" onclick="greater()" >
<input type="button" value="smallest" onclick="smaller()">
</form>
</body>
</html>

OUTPUT

Wednesday, December 8, 2010

Javascript program to find factorial of given number

Hello everybody I want to discuss the javascript code for find factorial of given number

HTML CODE

<html>
<head>
<title>
Javascript program for find factorial of given number
</title>
<script type="text/javascript">
function fact(n)
{
var m=1;
while(n)
{
m=m*n;
n--;
}
alert("Factorial of given number :"+" "+ m);
}
</script>
</head>
<body>
<h1 align="center"><font color="green">Javascript Program for calculate factorial</font></h1>
<form name="frm1">
Enter any number :<input type="text" name="fact1"><br><br>
<input type="submit" value="calculate factorial" onclick="fact(frm1.fact1.value)">
</form>
</body>
</html>