<head>
<title>Belajar Array</title>
<script type="text/javascript">
var nama_hari = new Array("Hari","Senin","Selasa","Rabu","Kamis","Jumat","Sabtu","minggu");
function hari()
{
var angka = document.getElementById("text_hari").value;
document.getElementById("text_hasil").value = nama_hari[angka];
}
</script>
</head>
<body bgcolor=pink>
Ketik Angka = <input type=text id=text_hari> <br>
<input type=button value=Cari onclick='hari();'> <br>
Hasil Hari= <input type=text id=text_hasil>
</body>
</html>
Rabu, 19 Maret 2014
Rabu, 12 Maret 2014
Numeric
<hmtl><head><title>Validasi Numerik</title> </head> <script> function cekNumeric() { var cek = document.getElementById("numeric").value; if (!/^[0-9]+$/.test(cek)) { alert("INPUT DATA HARUS NUMERIC !!!"); document.getElementById("numeric").value=""; } else { alert ("INPUT DATA NUMERIC: "+cek);} } </script> <input id="numeric" type="text"> <input type="Button" onclick="cekNumeric()" value="cek">
</html>Selasa, 11 Maret 2014
PERSAMAAN KUADRAT
<html>
<head>
<title>PERSAMAAN KUADRAT</title>
</head>
<body bgcolor=pink>
<script type=text/javascript>
function det(a,b,c)
{
var d = (b*b)-(4*a*c);
return(d);
}
var a = parseFloat(prompt("Masukan Nilai A \n : ax2 + bx + c = 0"));
var b = parseFloat(prompt("Masukan Nilai B \n : ax2 + bx + c = 0"));
var c = parseFloat(prompt("Masukan Nilai C \n : ax2 + bx + c = 0"));
var deter = det(a,b,c);
document.write("Nilai Determinan = " +deter+"<BR>");
document.write("<BR>");
if (deter>0)
{
var x1 = (-b - Math.sqrt(deter))/(2*a);
var x2 = (-b + Math.sqrt(deter))/(2*a);
document.write("Nilai x1 = " +x1+ "<BR>");
document.write("Nilai x2 = " +x2+ "<BR>");
document.write("<BR>");
document.write("Akar-akarnya Berbeda");
} else
if (deter==0)
{
var x1 = (-b - Math.sqrt(deter))/(2*a);
var x2 = (-b + Math.sqrt(deter))/(2*a);
document.write("Nilai x1 = " +x1+ "<BR>");
document.write("Nilai x2 = " +x2+ "<BR>");
document.write("<BR>");
document.write("Akar-akarnya Sama");
} else
if (deter<0)
{
document.write("Akar-akarnya Imaginer");
}
</script>
</body>
</html>
<head>
<title>PERSAMAAN KUADRAT</title>
</head>
<body bgcolor=pink>
<script type=text/javascript>
function det(a,b,c)
{
var d = (b*b)-(4*a*c);
return(d);
}
var a = parseFloat(prompt("Masukan Nilai A \n : ax2 + bx + c = 0"));
var b = parseFloat(prompt("Masukan Nilai B \n : ax2 + bx + c = 0"));
var c = parseFloat(prompt("Masukan Nilai C \n : ax2 + bx + c = 0"));
var deter = det(a,b,c);
document.write("Nilai Determinan = " +deter+"<BR>");
document.write("<BR>");
if (deter>0)
{
var x1 = (-b - Math.sqrt(deter))/(2*a);
var x2 = (-b + Math.sqrt(deter))/(2*a);
document.write("Nilai x1 = " +x1+ "<BR>");
document.write("Nilai x2 = " +x2+ "<BR>");
document.write("<BR>");
document.write("Akar-akarnya Berbeda");
} else
if (deter==0)
{
var x1 = (-b - Math.sqrt(deter))/(2*a);
var x2 = (-b + Math.sqrt(deter))/(2*a);
document.write("Nilai x1 = " +x1+ "<BR>");
document.write("Nilai x2 = " +x2+ "<BR>");
document.write("<BR>");
document.write("Akar-akarnya Sama");
} else
if (deter<0)
{
document.write("Akar-akarnya Imaginer");
}
</script>
</body>
</html>
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