tryjs_celsius 在线代码实例

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<!DOCTYPE html>
<html>
<head>
<script>
function convert(degree)
{
if (degree=="C")
 {
 F=document.getElementById("c").value * 9 / 5 + 32;
 document.getElementById("f").value=Math.round(F);
 }
else    
 {
 C=(document.getElementById("f").value -32) * 5 / 9;
 document.getElementById("c").value=Math.round(C);
 }
}
</script>
</head>
<body>
<p></p><b>Insert a number into one of the input fields below:</b></p>
<form>
<input id="c" name="c" onkeyup="convert('C')"> degrees Celsius<br>
equals<br> 
<input id="f" name="f" onkeyup="convert('F')"> degrees Fahrenheit 
</form>
<p>Note that the <b>Math.round()</b> method is used, so that the result will be returned as an integer.</p>
</body>
</html>
 
 
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运行结果
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