add some field and then subtract using ajax

jasmeet · January 19, 2014

hi,

i am not gud in ajax.

i have this code...

<html>

    <head>

        <title>Sum Html Textbox Values using jQuery/JavaScript</title>

        <style>

            body {

                font-family: sans-serif;

}

            #summation {

                font-size: 18px;

                font-weight: bold;

                color:#174C68;

}

            .txt {

                background-color: #FEFFB0;

                font-weight: bold;

                text-align: right;

}

        </style>

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

    </head>

    <body>

<table width="300px" border="1" style="border-collapse:collapse;background-color:#E8DCFF">

    <tr>

        <td width="40px">1</td>

        <td>Butter</td>

        <td><input class="txt" type="text" name="txt"/></td>

    </tr>

    <tr>

        <td>2</td>

        <td>Cheese</td>

        <td><input class="txt" type="text" name="txt"/></td>

    </tr>

    <tr>

        <td>3</td>

        <td>Eggs</td>

        <td><input class="txt" type="text" name="txt"/></td>

    </tr>

    <tr>

        <td>4</td>

        <td>Milk</td>

        <td><input class="txt" type="text" name="txt"/></td>

    </tr>

    <tr>

        <td>5</td>

        <td>Bread</td>

        <td><input class="txt" type="text" name="txt"/></td>

    </tr>

    <tr>

        <td>6</td>

        <td>Soap</td>

        <td><input class="txt" type="text" name="txt"/></td>

    </tr>

    <tr id="summation">

        <td> </td>

        <td align="right">Sum :</td>

        <td align="center"><span id="sum">0</span></td>

    </tr>

</table>

<script>

    $(document).ready(function(){

        //iterate through each textboxes and add keyup

        //handler to trigger sum event

        $(".txt").each(function() {

            $(this).keyup(function(){

                calculateSum();

});

});

});

    function calculateSum() {

        var sum = 0;

        //iterate through each textboxes and add the values

        $(".txt").each(function() {

            //add only if the value is number

            if(!isNaN(this.value) && this.value.length!=0) {

                sum += parseFloat(this.value);

}

});

        //.toFixed() method will roundoff the final sum to 2 decimal places

        $("#sum").html(sum.toFixed(2));

}

</script>

</body>

</html>

..........................from net.

this will add all the input fields and give us the total of it.

but i want one more input field in which when i put some value . then, total amount should be subtracted from it and gives the result..

can anyone give me some suggestions.... please ?????

thanks.

Ch0cu3r · January 19, 2014

Add a subtract field and then subtract its value from the total in calculateSum

Edited January 19, 2014 by Ch0cu3r

.josh · January 19, 2014

also, nothing in your posted code is ajax.

jasmeet · January 20, 2014

Add a subtract field and then subtract its value from the total in calculateSum

http://jsfiddle.net/ExBhk/1/

hi,,

thankew very much....

Edited January 20, 2014 by jasmeet

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