JAVASCRIPT PROGRAMS || PATTERNS || VALIDATION

JAVASCRIPT PROGRAMS

Q1) CONSIDER THE FOLLOWING QUESTION.

--->

<html>

<body>

function validate()

{

var name=document.getElementById("stdname").value;

var age=document.getElementById("stdage").value;

var mob=document.getElementById("stdmob").value;

if(name!="")

{

if(age>=1 && age<=20)

{

alert("Valid name and age");

}

else

{

alert("age should between 1 to 20");

}

else

{

alert("name should not be empty");

}

</script>

Enter the student Name:<input type="text" name="sname" id="stdname"><br><br>

Enter the student Age:<input type="text" name="sage" id="stdage"><br><br>

Enter the student mobile no:<input type="text" name="smob" id="stdmob"><br><br>

</body>

</html>

---------------------------------------------OR------------------------------------------------------------

<html>
<body>
<form>
name<input type=text name=uname>
age<input type=text name=age>
phoneno<input type=text name=t3>
<button onclick="show(uname.value,age.value,t3.value)">display</button>
</form>
<script>
function show(uname,age,t3)
{
if(uname.length==0)
{
alert("enter name");
uname=null;
}

if(age<1 || age>20)
{
alert("age between 1-20");
age=null;
}
a="name:"+uname+" age:"+age+" phoneno:"+t3;
alert(a);
}
</script>
</body>
</html>

Q2) CONSIDER THE FOLLOWING QUESTION.

--->

<html>
<body>
<script type="text/javascript">
function check_vowel()
{
var name=document.getElementById("strname").value;
var cnt=0,i;
for(i=0;i<name.length;i++)
{
if(name[i]=='a' || name[i]=='e' || name[i]=='i' || name[i]=='o' || name[i]=='u')
{
cnt++;
}
}
document.getElementById("1").innerHTML="Number of vowels in "+name+" is "+cnt;
}

</script>
Enter the String<input type="text" name="Sname" id="strname"><br>
<button onclick="check_vowel()">ok</button><br>
<h3 id="1"> </h3>
</body>

</html>

Q3)CONSIDER THE FOLLOWING QUESTION.

--->

<html>
<body onload="display()">
<script type="text/javascript">
function display()
{
fname=prompt("Enter First Name:","");
if(fname!="")
{
lname=prompt("Enter Last Name:","");
if(lname!="")
{
alert(fname+" "+lname);
}
else
{
alert("Please Enter the Last name....");

}
}
else
{
alert("Please Enter the first name....");
}
}
</script>
</body>

</html>

---------------------------------------------------------OR--------------------------------------------------

<html>

function show()

{

a=prompt("enter first name");

b=prompt("enter last name");

c=a+" "+b;

alert("NAME:"+c);

}

</script>

</body>

</html>

Q4)CONSIDER THE FOLLOWING QUESTION.

--->

<html>
<body>
<form method="POST" action="emailcount.php">
Enter email ID:<input type="text" name="email"><br><br>
<input type="submit">
</form>
</body>
</html>

<?php

$email=$_POST['email'];

if(isset($email))

{

$count1=substr_count($email,"@");

$count2=substr_count($email,".");

echo "'@' occurres <b>$count1</b> times<br><br>";

echo "'.' occurres <b>$count2</b> times<br>";

}

else

{

echo "Please enter email ID....";

}

Q5) WRITE A JAVASCRIPT FUNCTION TO DISPLAY CLOCK IN THE TEXTBOX.

--->

<html>
<script>
function dispclock()
{
var x=new Date();
var dt=x.getHours()+":"+x.getMinutes()+":"+x.getSeconds();
document.getElementById("clock").value=dt;
}
</script>
<body onload="dispclock()">
Current time:<input type="textbox" id="clock"><br><br>
<h1 id="1"> </h1>
</body>
</html>

----------------------------------------------------------OR------------------------------------------------------

<html>

function show()

{

d=new Date();

a=d.getHours();

b=d.getMinutes();

c=d.getSeconds();

d=a+":"+b+":"+c;

document.write(d);

setInterval("show()");

}

</script>

</body>

</html>

Q6)WRITE A JAVASCRIPT PROGRAM FOR FOLLOWING PATTERN.

A
A B
A B C
A B C D
A B C D E
A B C D E F

-->

var pattern =(function ()
{
function pattern()
{
}
pattern.main=function(args)
{
var array=[];
for(var i=0;i<=5;i++)
{
for(var j=0;j<=i;j++)
{
array.push(String.fromCharCode((alphabet + j))+" ");
}
;
}
arra.push("\n");
}
;
}
console.log(array.join(""))
}
return pattern;
}());
pattern["_class"]="pattern";
pattern.main(null);

Q7)WRITE A JAVASCRIPT PROGRAM FOR FOLLOWING PATTERN.

A
B B
C C C
D D D D
E E E E E
F F F F F F

--->

var pattern =(function ()
{
function pattern()
{
}
pattern.main=function(args)
{
var alphabet=65;
var array=[];
for(var i=0;i<=5;i++)
{
for(var j=0;j<=i;j++)
{
array.push(String.fromCharCode((alphabet ))+" ");
}
;
}
alphabet++;
array.push(\n);
}
console.log(array.join(""))
}
return pattern;
}());
pattern["_class"]="pattern";
pattern.main(null);

Q8)WRITE A JAVASCRIPT PROGRAM FOR FOLLOWING PATTERN.

A
A B
A B C
A B C D
A B C D E
A B C D E F

--->

var pattern =(function ()
{
function pattern()
{
}
pattern.main=function(args)
{
for(var i=0;i<=5;i++)
{
var alphabet =65;
var array=[];
for(var j=0;j<=i;j--)
{
array.push(" ");
}
;
}
for(var k=0;k<=i;k++)
{
array.push(String.fromCharCode((alphabet + k))+" ");
}
;
}
arra.push("\n");
}
;
}
console.log(array.join(""))
}
return pattern;
}());
pattern["_class"]="pattern";
pattern.main(null);

Q8)WRITE A JAVASCRIPT PROGRAM FOR FOLLOWING PATTERN.

A
A B
A B C
A B C D
A B C D E
A B C D E F

--->

var pattern =(function ()
{
function pattern()
{
}
pattern.main=function(args)
{
for(var i=0;i<=5;i++)
{
var alphabet =65;
var array=[];
for(var j=0;j<=i;j--)
{
array.push(" ");
}
;
}
for(var k=0;k<=i;k++)
{
array.push(String.fromCharCode((alphabet + k))+" ");
}
;
}
arra.push("\n");
}
;
}
console.log(array.join(""))
}
return pattern;
}());
pattern["_class"]="pattern";
pattern.main(null);

Q9)WRITE A JAVASCRIPT PROGRAM FOR FOLLOWING PATTERN.

F E D C B A
F E D C B
F E D C
F E D
F E
F

-->

var pattern =(function ()
{
function pattern()
{
}
pattern.main=function(args)
{
var alphabet =65;
var array=[];
for(var i=0;i<=5;i++)
{
for(var j=0;j<=i;j++)
{
array.push(String.fromCharCode((alphabet + j))+" ");
}
;
}
arra.push("\n");
}
;
}
console.log(array.join(""))
}
return pattern;
}());
pattern["_class"]="pattern";
pattern.main(null);

Q10)WRITE A JAVASCRIPT PROGRAM FOR FOLLOWING PATTERN.

*
* *
* * *
* * * *
* * * * *

--->

var javascriptpattern =(function ()
{
function javascriptpattern()
{
}
javascriptpattern.printStars=function(n)
{
var i;
var j;
for(i=0;i<n;i++)
{
var array=[];
for( j=0;j<=i;j++)
{
array.push("* ");
}
;
}
console.log(array.join(""))
};
}
};
javascriptpattern.main=function(args)
{
var n=5;
javascriptpattern.printStars(n);
};
return javascriptpattern;
}());
javascriptpattern["_class"]="javascriptpattern";
javascriptpattern.main(null);

Q11)WRITE A JAVASCRIPT PROGRAM FOR FOLLOWING PATTERN.

*
* *
* * *
* * * *
* * * * *

--->

var javascriptpattern =(function ()
{
function javascriptpattern()
{
}
javascriptpattern.printStars=function(n)
{
var i;
var j;
for(i=0;i<n;i++)
{
var array=[];
for( j=2*(n-1);j>=0;j--)
{
array.push(" ");
}
;
}
for(j=0;j<=i;j++)
{
array.push("*"):
}
;
}
console.log(array.join(""));
}
;
}
};
javascriptpattern.main=function(args)
{
var n=5;
javascriptpattern.printStars(n);
};
return javascriptpattern;
}());
javascriptpattern["_class"]="javascriptpattern";
javascriptpattern.main(null);

Q12)WRITE A JAVASCRIPT PROGRAM FOR FOLLOWING PATTERN.

*
* *
* * *
* * * *
* * * * *

--->

var javascriptpattern =(function ()
{
function javascriptpattern()
{
}
javascriptpattern.printtriangle=function(n)
{
var i;
var j;
for(i=0;i<n;i++)
{
var array=[];
for( j=n-i;j>1i;j--)
{
array.push("* ");
}
;
}
for(j=0;j<=i;j++)
{
array.push("*");
}
;
console.log(array.join(""))
}
;
}
};
javascriptpattern.main=function(args)
{
var n=5;
javascriptpattern.printTriangle(n);
};
return javascriptpattern;
}());
javascriptpattern["_class"]="javascriptpattern";
javascriptpattern.main(null);

Q13)WRITE A JAVASCRIPT PROGRAM FOR FOLLOWING PATTERN.

1
2 7
3 8 13
4 9 14 19
5 10 15 20 25

--->

var pattern12 =(function ()
{
function pattern12()
{
}
pattern12.main=function(args)
{
var rows=5;
for(var i=1;i<=rows;i++)
{
var temp=i;
var array=[];
for(var j=0;j>=i;j--)
{
array.push(temp +" ")
temp=temp+rows;
}
;
}
console.log(array.join('' "));
}
;
}
return pattern12;
}());
pattern["_class"]="pattern12";
pattern12.main(null);

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JAVASCRIPT PROGRAMS || PATTERNS || VALIDATION