Question

In: Computer Science

Problem: Design a web page to provide a metric conversion guide for college students. Provide the...

Problem: Design a web page to provide a metric conversion guide for college students. Provide the capability to convert the following (both ways):

Miles to kilometers (distance)

Gallons to liters (volume)

Pounds to kilograms (weight)

Fahrenheit to Celsius (temperature)

must have a separate PHP and HTML page

Expert Solution

HTML Source code for converting Miles to Kilometers

<html>
<head><title>Miles to Kilometers</title>
<script language="javascript">

var textMiles;
  var textKm;
   var KILOMETERS_TO_MILES = 0.621371;
  var MILES_TO_KM = 1.60934;
   function initElements() {
    if (!textMiles) {  // Intitialization of the elements
      textMiles = document.getElementById("text-miles");
      textKm = document.getElementById("text-km");
    }
  }
 
  function calMilesFromKilometers() {
    initElements();
    var km = parseFloat(txtKm.value);
    txtMiles.value = String(km * MILES_TO_KM);//Formula to calculate the conversion rate of the KM into miles
  }
 
  function calcKilometersFromMiles() {
    initElements();
    var miles = parseFloat(txtMiles.value);
    txtKm.value = String(miles * KM_TO_MILES);//formula to calculate KM_to_Miles

}

</script>

</head>

<body>

 <body>
 <b>Miles To Kilometers Converter</b> <br>
<br>
 <table border="0" cellpadding="5" cellspacing="0" style="width: 500px;">
<tbody>
  <tr>
    <td> </td>
    <td><b>Miles</b>  </td>
    <td> </td>
    <td><b>Kilometers</b>  </td>
  </tr>
  <tr>
    <td>miles: </td>
    <td><input id="txt-miles" size="20" type="text" value="50"/> </td>
    <td>km: </td>
    <td><input id="txt-km" size="20" type="text" value=""/> </td>
  </tr>
  <tr>
    <td> </td>
    <td> <button type="button" onclick="calcMilesFromKilometers();">Calculate Miles</button> </td>
    <td> </td>
    <td> <button type="button" onclick="calcKilometersFromMiles();">Calculate Kilometers</button> </td>
  </tr>
</table>
 </body>
</html>
The above HTML Program would help the user to write a script and execute the script in the HTML Program.
__________________________________________________________________

2.Gallons to Litres

<html> 
<head> <script language="Java script">
 $(function () {  // set values  var toGallons = 0.26417; 
 var toMetric = 3.7854;  
var converted = 0;  
$('input[name="data"]').change(function () {  // convert the value to  convert();   });
 $('input[name="convert"]').change(function () {  // change radip to convert  convert();  }); 
 function convert() {  var theValue = $('input[name="data"]').val(); //value of original  
var selected = $("input[type='radio'][name='convert']:checked").val(); //determine if Metric or Imperial    if (selected === 'i') { //If imperial  converted = "The Imperial Value of " + theValue + " = the metric value of " + theValue * toMetric;  } else {//If metric  converted = "The Metric Value of " + theValue + " = the Imperial value of " + theValue * toGallons;  }  $('#newData').html(converted); //Place new data in div id newData   } });  </script>
<title>Gallons to litres conversion</title>
 </head> 
<body> <input type="radio" name="convert" value="m">
Metric <input type="radio" name="convert" value="i" checked>
Imperial  <div>Data<br><input name="data" value="0"> 
</div>  
  <div>Converted</div><div id="newData"></div>  
  </body>
 </html>
___________________________________________________________________

3. HTML Program to convert pounds to kilogram
<html>
<head>
<script language="java script">
function weightConverter(valNum) {

{
document.getElementById("outputGrams").innerHTML=valNum/0.0022046;
}

</script>
</head>
<body>

<p>
<label>Pounds</label>
<input id="inputPounds" type="number" placeholder="Pounds" oninput="weightConverter(this.value)"onchange="weightConverter(this.value)">
</p>
<p>Grams: <span id="outputGrams"></span></p>

</body>

</html>

________________________________________________________________________

We need to use the Math.round() method for the conversion

HTML Program to convert fareign heit to celsius

<h1>JavaScript Fahrenheit to Celsius</h1>//heading

<p>Insert a number into one of the input fields below:</p>

<p><input id="f" onkeyup="convert('F')"> degrees Fahrenheit</p>

<p><input id="c" onkeyup="convert('C')"> degrees Celsius</p>

</body>
</html>

___________________________________________________________________________

The above method can help the user to enter the values and conversion formulas in script language.

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