How to convert this code to j query

Question

1.00/5 (1 vote)

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<!DOCTYPE html>
<html>
<head>
<body>

<h1> Celcius to Fahrenhiet</h1>

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

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

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


<script>


function convert(degree)
 {
    var x;
    if (degree == "C") {
                          x = document.getElementById("c").value * 9 / 5 + 32;
                              document.getElementById("f").value = Math.round(x);
    }
   else if(degree == 'F'){

                      x = (document.getElementById("f").value -32) * 5 / 9;
                          document.getElementById("c").value = Math.round(x);
    }
}

</script>

</body>
</html>

What I have tried:

i have tried $ sign and many other attributes to the function field but it goes wrong

Posted 2-Apr-17 21:00pm

Member 13101800

Updated 2-Apr-17 22:36pm

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Wessel Beulink · Answer 1 · 2017-04-02T21:07:00

document.getElementById("c") yo can replace this by $("#c")
if you use getElementById use a dot instead like: $(".c")

var x;
   if (degree == "C") {
                         x = $("#c").val() * 9 / 5 + 32;
                             $("#f").val() = Math.round(x);
   }
  else if(degree == 'F'){

                     x = ($("#f").val() -32) * 5 / 9;
                         $("#c").val() = Math.round(x);
   }

I also should use this instead of id, makes the code more readable.

<p><input id="c" onchange="convert(this)"  onkeyup="convert(this)" type="number" > degrees Celsius</p>

<p><input id="f" onkeyup="convert(this)" type="number"> degrees Fahrenheit</p> 
function convert(e)
{
 x = $(e).val() * 9 / 5 + 32;
     $(e).val() = Math.round(x);
}

Karthik_Mahalingam · Answer 2 · 2017-04-02T22:36:00

<!DOCTYPE html>
<html>
<head>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.0/jquery.min.js"></script>
    <script>

        $(function () {
            $('#C,#F').on('keyup', function () {
                convert(this.id);
            });
            $('#C').on('change', function () {
                convert(this.id);
            });
        }); 
        function convert(degree) {
            var x;
            if (degree == "C") {
                x = parseFloat($('#C').val()) * 9 / 5 + 32;
                $('#F').val(Math.round(x));
            }
            else if (degree == 'F') {
                x = (parseFloat($('#F').val()) - 32) * 5 / 9;
                $('#C').val(Math.round(x));
            } 
        }

    </script>
</head>
<body>

    <h1> Celcius to Fahrenhiet</h1>

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

    <p><input id="C"  type="number"> degrees Celsius</p>

    <p><input id="F"  type="number"> degrees Fahrenheit</p>




</body>
</html>

How to convert this code to j query

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