js 进制转换
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2022-06-13 08:22:38
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>
<body>
<script language="javascript">
function test() {
var num = document.getElementById("in").value;
var type = document.getElementById("title");
var tynum, to;
for ( var i = 0; i < type.length; i++) {
if (type[i].selected)
tynum = parseInt(type[i].value);
}
switch (tynum) {
case (1):
to = parseInt(num).toString(2);
break;
case (2):
to = parseInt(num).toString(8);
break;
case (3):
to = parseInt(num).toString(16);
break;
case (4):
to = parseInt(num, 2);
break;
case (5):
to = parseInt(num, 8);
break;
case (6):
to = parseInt(num, 16);
break;
case (7):
to = parseInt(num, 2).toString(8);
break;
case (8):
to = parseInt(num, 8).toString(2);
break;
case (9):
to = parseInt(num, 2).toString(16);
break;
case (10):
to = parseInt(num, 16).toString(2);
break;
case (11):
to = parseInt(num, 8).toString(16);
break;
case (12):
to = parseInt(num, 16).toString(8);
break;
}
if (isNaN(to))
to = "输入非法字符了哦"
document.getElementById("out").value = to;
}
</script>
<select name="title" id="title" style="width: 152px;">
<option value="1">十进制转二进制</option>
<option value="2">十进制转八进制</option>
<option value="3">十进制转十六进制</option>
<option value="4">二进制转十进制</option>
<option value="5">八进制转十进制</option>
<option value="6">十六进制转十进制</option>
<option value="7">二进制转八进制</option>
<option value="8">八进制转二进制</option>
<option value="9">二进制转十六进制</option>
<option value="10">十六进制转二进制</option>
<option value="11">八进制转十六进制</option>
<option value="12">十六进制转八进制</option>
</select>
<br />
<input type="text" id="in" />
<br>
<input type="text" id="out" />
<br />
<input type="button" value="change" onclick="test()" />
<font color="#FF0000" style="font-size: 12px;">*注：存在非法字符时，我们只截断有效字符进行转换</font>
</body>
</html>
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