Question

In: Computer Science

Provide two text boxes for the user to enter in 2 values. Once the user clicks...

Provide two text boxes for the user to enter in 2 values. Once the user clicks off the second box, the
sum of the two numbers displayed as a header level 2.


here is what i have , and i cant find a way to display the sum of the numbers in each box in the header along with the other text.

<h1>Problem 6</h1>
<input type="text" id="txt1" onkeyup="sum();" />
<input type="text" id="txt2" onkeyup="sum();" />
<h2 id="txt3" result=""> The sum of the two numbers is=""</h2>
   <script>
   function sum() {
var txtFirstNumberValue = document.getElementById('txt1').value;
var txtSecondNumberValue = document.getElementById('txt2').value;
var result = parseInt(txtFirstNumberValue) + parseInt(txtSecondNumberValue);
if (!isNaN(result)) {
document.getElementById('txt3').value = result;
}
}
   </script>

Solutions

Expert Solution

HTML file :

<!DOCTYPE html>

<html lang="en">

<head>

    <title></title>

    <meta charset="UTF-8">

    <meta name="viewport" content="width=device-width, initial-scale=1">

</head>

<body>

    <h1>Problem 6</h1>

    <input type="text" id="txt1" />

    <input type="text" id="txt2" onblur="sum()" />

    <h2 id="txt3" result=""> The sum of the two numbers is =</h2>

    <script>

        //function sum()

        function sum() {

            //getting first number entered by user

            var txtFirstNumberValue = document.getElementById('txt1').value;

            //getting second number entered by user

            var txtSecondNumberValue = document.getElementById('txt2').value;

            //add numbers

            var result = parseInt(txtFirstNumberValue) + parseInt(txtSecondNumberValue);

            if (!isNaN(result)) {

                //display result

               document.getElementById('txt3').innerHTML = "The sum of the two numbers is ="+result;

            }

        }

    </script>

</body>

</html>

==============================================

Screen showing textboxes :

Screen showing result :


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