Here is a sample program that I wrote in JavaScript that will ask the user to give temperature in Fahrenheit and then convert into Celsius equivalent. The code is very simple and easy to understand.
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My mobile number here in the Philippines is 09173084360.
Sample Program Output
Program Listing
<html>
<title> Fahrenheit To Celsius Converter 1.0
</title>
<body bgcolor="lightblue">
<font color="black" face="Arial" size="5">
<center>
<br>
Fahrenheit To Celsius Converter 1.0
<br>
</center>
</font>
<style type="text/css">
.labelText {
text-align : right;
padding-right : 3px;
color : black;
font-family:"Arial";
font-size : 18px;
}
</style>
<form name="temp" method="post">
<table>
<tr>
<tr>
<td> </td>
</tr>
<td class="labelText"> Enter Temperature in Fahrenheit
</td>
<td> <input type="text" name="fahr" size="10"/> </td>
</tr>
<tr>
<td> </td>
</tr>
</td>
<tr>
<td class="labelText">
The result is
</td>
<td>
<input type="text" name="display" size="50"/> </td>
</tr>
<tr>
<td> </td>
</tr>
</td>
<td> <input type="button" value="Compute"
title="Click here to compute the temperature in celsius."
onClick="compute1()">
</td>
<td> <input type="button" value="Clear"
title="Click here to clear the text box."
onClick="clear_all()">
</td>
</table>
</font>
</form>
<script language ="javascript">
function compute1()
{
var xval1, solve1,final_result;
var result;
value1 = parseInt(document.temp.fahr.value);
solve1 = 100/(212-32) * (value1 - 32 )
// For two decimal places convertion
final_result = Math.round(solve1 * 100) /100;
result = value1 + " fahrenheit is equivalent to "
+ final_result + " celsius. ";
document.temp.display.value = result;
}
function clear_all()
{
document.temp.fahr.value = "";
document.temp.display.value = "";
document.temp.fahr.focus();
}
</script>
</body>
</html>
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