auto calculate addition and subtranstion while typing

Question

1.00/5 (1 vote)

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HTML

<html>
<body>
<form>
  Addition 1:<br>
  <input type="text" name="add1">
  <br>
  Subtraction 1:<br>
  <input type="text" name="sub1">
<br>

 Addition 2:<br>
  <input type="text" name="add2">
  <br>
  Subtraction 2:<br>
  <input type="text" name="sub2"><br> <br> 
<label>Total</label>
<input type="text" name="total"  disabled>
</form>

</body>
</html>

Posted 14-Dec-15 21:22pm

Abim usman

Updated 14-Dec-15 21:43pm

Mohibur Rashid

v2

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Comments

Suvendu Shekhar Giri 15-Dec-15 3:29am

Where is the code ?

Abim usman 15-Dec-15 6:17am

Sorry my post wrong. not subtraction means multiplication.

My code Below. The addition functions properly, the multiplication wont work directly to the over all total.

I would like to fix this problem.

<html>
<body>

<table>
<tr>

Addition and Multiplication

</tr>

<tr>
<td>Lg Tv</td>
<td><input type='text' class='Multiplication' placeholder="Quantity "/></td>

</tr>
<tr>
<td>Price</td>
<td><input type='text' class='price' placeholder="Price "/></td>
</tr>
<tr>
<td>Samsung Tv</td>
<td><input type='text' class='Multiplication' placeholder="Quantity "/></td>
</tr>

<tr>
<td>Price</td>
<td><input type='text' class='price' placeholder="Price "/></td>
</tr>
<tr>
<td>Over all Total</td>
<td><input type='text' id='totalPrice' disabled /></td>
</tr>
</table>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js "></script>

<script>
// we used jQuery 'keyup' to trigger the computation as the user type
$('.price').keyup(function () {

// initialize the sum (total price) to zero
var sum = 0;

// we use jQuery each() to loop through all the textbox with 'price' class
// and compute the sum for each loop
$('.price').each(function() {
sum += Number($(this).val());
});

// set the computed value to 'totalPrice' textbox
$('#totalPrice').val(sum);

});
</script>

</body>
</html>

OriginalGriff 15-Dec-15 3:32am

And?
What have you tried?
Where are you stuck?
What help do you need?

Abim usman 15-Dec-15 6:23am

Sorry my post wrong. not subtraction is multiplication.

My code Below. The addition functions properly, the multiplication wont work directly to the over all total.

I would like to fix this problem.

<html>
<body>

<table>
<tr>

Addition and Multiplication

</tr>

<tr>
<td>Lg Tv</td>
<td><input type='text' class='Multiplication' placeholder="Quantity "/></td>

</tr>
<tr>
<td>Price</td>
<td><input type='text' class='price' placeholder="Price "/></td>
</tr>
<tr>
<td>Samsung Tv</td>
<td><input type='text' class='Multiplication' placeholder="Quantity "/></td>
</tr>

<tr>
<td>Price</td>
<td><input type='text' class='price' placeholder="Price "/></td>
</tr>
<tr>
<td>Over all Total</td>
<td><input type='text' id='totalPrice' disabled /></td>
</tr>
</table>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js "></script>

<script>
// we used jQuery 'keyup' to trigger the computation as the user type
$('.price').keyup(function () {

// initialize the sum (total price) to zero
var sum = 0;

// we use jQuery each() to loop through all the textbox with 'price' class
// and compute the sum for each loop
$('.price').each(function() {
sum += Number($(this).val());
});

// set the computed value to 'totalPrice' textbox
$('#totalPrice').val(sum);

});
</script>

</body>
</html>

Abim usman 15-Dec-15 6:26am

Sorry my post is wrong. not subtraction means multiplication

My code Below. The addition functions properly, the multiplication wont work directly to the over all total.

I would like to fix this problem.

<html>
<body>

<table>
<tr>

Addition and Multiplication

</tr>

<tr>
<td>Lg Tv</td>
<td><input type='text' class='Multiplication' placeholder="Quantity "/></td>

</tr>
<tr>
<td>Price</td>
<td><input type='text' class='price' placeholder="Price "/></td>
</tr>
<tr>
<td>Samsung Tv</td>
<td><input type='text' class='Multiplication' placeholder="Quantity "/></td>
</tr>

<tr>
<td>Price</td>
<td><input type='text' class='price' placeholder="Price "/></td>
</tr>
<tr>
<td>Over all Total</td>
<td><input type='text' id='totalPrice' disabled /></td>
</tr>
</table>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js "></script>

<script>
// we used jQuery 'keyup' to trigger the computation as the user type
$('.price').keyup(function () {

// initialize the sum (total price) to zero
var sum = 0;

// we use jQuery each() to loop through all the textbox with 'price' class
// and compute the sum for each loop
$('.price').each(function() {
sum += Number($(this).val());
});

// set the computed value to 'totalPrice' textbox
$('#totalPrice').val(sum);

});
</script>

</body>
</html>

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Raje_ · Accepted Answer · 2015-12-15T00:26:00

Here is an example :
Html code :

HTML

<div>
        Addition 1:<br />
        <input type="text" id="add1" name="add1" onkeyup="AutoCalc(this)" />
        <br />
        Subtraction 1:<br />
        <input type="text" id="sub1" name="sub1" onkeyup="AutoCalc(this)" />
        <br />
        Addition 2:<br />
        <input type="text" id="add2"  name="add2" onkeyup="AutoCalc(this)" />
       <br />
        Subtraction 2:<br />
        <input type="text" id="sub2" name="sub2" onkeyup="AutoCalc(this)" />
        <br />
        <br />
        <label>
            Total</label>
        <input type="text" id="total" name="total" disabled="disabled" />
    </div>

And Javascript :

JavaScript

function AutoCalc(obj) {
           var total = 0;

           if (isNaN(obj.value)) {
               alert("Please enter a number :(");
               obj.value = '';
               return false;
           }
           else {

               var textBox = new Array();
               textBox = document.getElementsByTagName('input')

               for (i = 0; i < textBox.length; i++) {
                   if (textBox[i].type == 'text') {
                       var inputVal = textBox[i].value;
                       if (inputVal == '')
                           inputVal = 0;
                       if ((textBox[i].id == 'add1') || (textBox[i].id == 'add2')) {
                           total = total + parseInt(inputVal);
                       }
                       if ((textBox[i].id == 'sub1') || (textBox[i].id == 'sub2')) {
                           total = total - parseInt(inputVal);
                       }
                   }
               }
               document.getElementById('total').value = total;
           }
       }

Hope it helps you.

auto calculate addition and subtranstion while typing

Addition and Multiplication

Addition and Multiplication

Addition and Multiplication

1 solution

Solution 1

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