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/gist:25fc4c2f0b8ab30908a9816585c994eb

Created October 21, 2017 15:45
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gistfile1.txt
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<script type="text/javascript">
function max() {
var a = document.getElementById("txtso1").value
Number(a)
var b = document.getElementById("txtso2").value
Number(b)
var c = document.getElementById("txtso3").value
Number(c)
document.getElementById("txtkq").innerHTML = Math.max(a, b, c)
}
function min() {
var a = document.getElementById("txtso1").value
Number(a)
var b = document.getElementById("txtso2").value
Number(b)
var c = document.getElementById("txtso3").value
Number(c)
document.getElementById("txtkq").innerHTML = Math.min(a, b, c)
}
function cos() {
var b = document.getElementById("txtso2").value
Number(b)
document.getElementById("txtkq").innerHTML = Math.cos(b * Math.PI / 180);
b = Math.round(b * 1000) / 1000;
}
function sina() {
var a = document.getElementById("txtso1").value
Number(a)
document.getElementById("txtkq").innerHTML = Math.sin(a.value * Math.PI / 180);
a = Math.round(a * 1000) / 1000;
}
function amub() {
var a = document.getElementById("txtso1").value
Number(a)
var b = document.getElementById("txtso2").value
Number(b)
document.getElementById("txtkq").innerHTML = Math.pow(a, b)
}
</script>
</head>
<body>
<form>
<table>
<tr>
<td style="border:1px solid;border-collapse:collapse;width:150px" > a(Số thứ nhất)</td>
<td> <input type="text" id="txtso1" name="txtso1" style="width:150px" />
</td>
</tr>
<tr>
<td style="border:1px solid;border-collapse:collapse;width:150px" > b(Số thứ hai)</td>
<td> <input type="text" id="txtso2" name="txtso2" style="width:150px" />
</td>
</tr>
<tr>
<td style="border:1px solid;border-collapse:collapse;width:150px" > ca(Số thứ ba)</td>
<td> <input type="text" id="txtso3" name="txtso3" style="width:150px" />
</td>
</tr>
<tr>
<td style="border:1px solid;border-collapse:collapse;width:150px" > KẾT QUẢ</td>
<td> <input type="text" id="txtkq" name="txtkq" style="width:150px" readonly />
</td>
</tr>
</table>
<button type="button" id="idmax" name="idmax" value="MAX" onclick="max()">MAX</button>
<button type="button" id="idmin" name="idmin" value="MIN" onclick="min()">MIN</button>
<button type="button" id="idsina" name="idsina" value="sin(a)" onclick="sina()">sin(a)</button>
<button type="button" id="idcosa" name="idcosa" value="cos(a)" onclick="cos(a)">cos(a)</button>
<button type="button" id="idamub" name="idamub" value="a^b" onclick="amub()">a^b</button>
</form>
</body>
</html>
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