Happy life: Mei 2009

Rabu, 27 Mei 2009

Fungsi JS Script

<html>
<head><title>script</title></head>
<body><script laguage="javascript">
var a=12;
var b=4;
function pd2(b) {
var a=b*2;
return a; }
document.write("dua kali dari ",b," adalah ",pd2(b));
document.write("Nilai dari a adalah", a);
</script>

</body></html>

Masih pada script di atas, Pada baris ke - 7 Scriptnya diganti dari " var a=b*2; "
menjadi " a=b*2; "

<html>
<head><title>script</title></head>
<body><script language="javascript">
var a=12;
var b=4;
function pd2(b) {
a=b*2;
return a; }
document.write("dua kali dari ",b," adalah ",pd2(b));
document.write("Nilai dari a adalah", a);
</script>

</body></html>

Rabu, 13 Mei 2009

JAWABAN SOAL "CALCULATOR"

soal-soal javascript calculator

1. Apa nama title skrip javascript tersebut ?

Jawab :<span>calculator smaneka</span>

2. ekstensi file Skrip tersebut disimpan dengan file ber-ekstensi jenis ?

Jawab : *htm

3. berapa jumlah variabel yang didefinisikan dalam file tersebut !

Jawab : 11

4. Berapa jumlah fungsi yang ada didalam skrip tersebut !

Jawab : 11

5. Tuliskan nama semua variabel skrip javascript tersebut ?

Jawab :

var minussign = ' - ';
var multiplysign = ' * ';
var dividesign = ' / ';
var decimalsign = ' . ';
var negativesign = ' -';
var leftbracket = ' (';
var rightbracket = ') ';
var rad = 3.141592654 / 180;
var base_10 = Math.LN10;
var base_2 = Math.LN10;

6. Tuliskan nama semua fungsi skrip tersebut ?

Jawab :
function calculate(arg) {
arg.expr.value = eval(arg.expr.value)
}

function enter(arg, string) {
arg.expr.value += string
}

function clear_display(arg) {
arg.expr.value = ' '
}

function calc_sqrt(form) {
form.expr.value = (Math.sqrt(form.expr.value))
}

function calc_sqr(form) {
form.expr.value = ((form.expr.value * 1) * (form.expr.value * 1))
}

function sin_form(form) {
form.expr.value = (Math.sin (form.expr.value * rad))
}

function cos_form(form) {
form.expr.value = (Math.cos (form.expr.value * rad))
}

function tan_form(form) {
form.expr.value = (Math.tan(form.expr.value * rad))
}

function inverse(form) {
form.expr.value = ( 1 / (form.expr.value))
}

function base10_log(form) {
form.expr.value = (Math.log(form.expr.value) / base_10)
}

function base2_log(form) {
form.expr.value = (Math.log(form.expr.value) / base_2)
}

7. Tuliskan skrip untuk membuat tampilan display pada skrip tersebut !

Jawab :

<tr>
<td colspan="5" width="100%"><input name="expr" size="35" action="calculate(this.form)" type="text"></td>
</tr>

8. Tuliskan skrip untuk membuat 1 tombol !

Jawab :
<tr><td width="20%"><input value=" sin " onclick="sin_form(this.form)" type="button"></td>

function sin_form(form) {
form.expr.value = (Math.sin (form.expr.value * rad))
}

9. Tuliskan fungsi jika tombol = ditekan oleh mouse !

Jawab : Onclick="sin_form(this.form)

10. Tuliskan skrip untuk membersihkan display !

Jawab :
<td colspan="2" width="40%"><input value=" C " onclick="clear_display(this.form)" type="button"></td>

function clear_display(arg) {
arg.expr.value = ' '
}

PROGRAM CALCULATOR

<html><head><title>JS - Calculator</title><script language="Javascript"></script></head><body><p align="center"><big><big>JavaScript - Calculator SMANEKA</big></big></p><form><table border="0" width="100" bgcolor="#CCCCCC" align="center"><tr><td width="100%" colspan="5"><input type="text" name="expr" size="35"action="calculate(this.form)"></td></tr><tr><td width="20%"><input type="button" value=" sin " Onclick="sin_form(this.form)"></td><td width="20%"><input type="button" value=" cos " OnClick="cos_form(this.form)"></td><td width="20%"><input type="button" value=" tan " Onclick="tan_form(this.form)"></td><td width="20%"><input type="button" value="log10e" onClick="base10_log(this.form)"></td><td width="20%"><input type="button" value=" log2e " OnClick="base2_log(this.form)"></td></tr><tr><td width="20%"><input type="button" value=" Sqrt " Onclick="calc_sqrt(this.form)"></td><td width="20%"><input type="button" value=" Sqr " OnClick="calc_sqr(this.form)"></td><td width="20%"><input type="button" value=" ( " OnClick="enter(this.form,leftbracket)"></td><td width="20%"><input type="button" value=" ) " OnClick="enter(this.form,rightbracket)"></td><td width="20%"><input type="button" value=" 1 / X " OnClick="inverse(this.form)"></td></tr><tr><td width="20%"><input type="button" value=" 7 " onClick="enter(this.form, 7)"></td><td width="20%"><input type="button" value=" 8 " onClick="enter(this.form, 8)"></td><td width="20%"><input type="button" value=" 9 " onClick="enter(this.form, 9)"></td><td width="40%" colspan="2"><input type="button" value=" C " onClick="clear_display(this.form)"></td></tr><tr><td width="20%"><input type="button" value=" 4 " onClick="enter(this.form, 4)"></td><td width="20%"><input type="button" value=" 5 " onClick="enter(this.form, 5)"></td><td width="20%"><input type="button" value=" 6 " onClick="enter(this.form, 6)"></td><td width="20%"><input type="button" value=" * " onClick="enter(this.form,multiplysign)"> </td><td width="20%"> <input type="button" value=" / " onClick="enter(this.form,dividesign)"></td></tr><tr><td width="20%"><input type="button" value=" 1 " onclick="enter(this.form, 1)"></td><td width="20%"><input type="button" value=" 2 " onclick="enter(this.form, 2)"></td><td width="20%"><input type="button" value=" 3 " onclick="enter(this.form, 3)"></td><td width="20%"><input type="button" value=" + " onClick="enter(this.form,plussign)"> </td><td width="20%"> <input type="button" value=" - " onClick="enter(this.form,minussign)"></td></tr><tr><td width="20%"><input type="button" value=" 0 " onClick="enter(this.form, 0)"></td><td width="20%"><input type="button" value=" . " onClick="enter(this.form,decimalsign)"></td><td width="20%"><input type="button" value=" neg " onClick="enter(this.form,negativesign)"></td><td width="40%" colspan="2"><input type="button" value=" = " onClick="calculate(this.form)"></td></tr></table></form></body></html>

Selasa, 05 Mei 2009

gamBaR forM vaLidation

form validation

<html>

<body>

function chkuname()

{

uname=new String();

uname=document.regis.uname.value

if ( uname.length == 0 )

{

alert ("Enter a User Name");

}

else

{

chkupass()

}

function chkupass()

{

upass=new String();

upass=document.regis.upass.value

if (upass.length < 5)

{

alert ("Password Must be atleast 6 Chars");

}

else

{

chkname()

}

function chkname()

{

var ch=0;

name=new String();

name=document.regis.name.value;

if (name.length==0)

alert ("Enter your Name")

else

{

u=0;

for (i=0;i<name.length;i++)

{

if ((name.charCodeAt(i) >= 64 && name.charCodeAt(i) <= 90)||(name.charCodeAt(i) >= 97 && name.charCodeAt(i) <= 122)||(name.charCodeAt(i)==46)||(name.charCodeAt(i)==32))

{

}

else

{

u=u+1;

}

if (u>0)

{

alert ("Invalid Name");

}

else

{

chkdob()

}

function chkdob()

{

dob=new String();

dob=document.regis.dob.value

if (dob.length!=10)

alert ("Invalid Date")

else

{

if (dob.charAt(2)!="/" && dob.charAt(5)!="/")

alert ("Invalid Date Format")

else

tempstr=dob.split("/")

dd=tempstr[0]

mm=tempstr[1]

yy=tempstr[2]

if (dd>=1 && dd<=31 && mm>=1 && mm<=12 && yy>=1900 && yy<=2004 )

{

chkemail()

}

else

alert ("Enter Valid date")

}

function chkemail()

{

mail=new String();

mail=document.regis.email.value

if (mail.length<1)

alert("Please enter e-mail address.");

else

{

at_pos=mail.indexOf("@")

dot_pos=mail.indexOf(".")

if(at_pos<1 || dot_pos<1)

alert("Missing '@' and '.' in email address.")

else

{

u=0;

p=0;

for(var i=0;i<mail.length;i++)

{

if ((mail.charCodeAt(i) >= 64 && mail.charCodeAt(i) <= 90)||(mail.charCodeAt(i) >= 97 && mail.charCodeAt(i) <= 122)||(mail.charCodeAt(i) >= 48 && mail.charCodeAt(i) <= 57)||(mail.charCodeAt(i)==95)||(mail.charCodeAt(i)==46))

{

if(mail.charAt(i)=="@")

p=p+1

}

else

{

u=u+1

}

if (p>1)

alert ("Email must have only one '@'")

if (u>0)

alert ("Special Characters are not allowed")