How get total sum from input box values using Javascript?
Javascript:
window.sumInputs = function() {
var inputs = document.getElementsByTagName('input'),
result = document.getElementById('total'),
sum = 0;
for(var i=0; i<inputs.length; i++) {
var ip = inputs[i];
if (ip.name && ip.name.indexOf("total") < 0) {
sum += parseInt(ip.value) || 0;
}
}
result.value = sum;
}
Html:
Qty1 : <input type="text" name="qty1" id="qty"/><br>
Qty2 : <input type="text" name="qty2" id="qty"/><br>
Qty3 : <input type="text" name="qty3" id="qty"/><br>
Qty4 : <input type="text" name="qty4" id="qty"/><br>
Qty5 : <input type="text" name="qty5" id="qty"/><br>
Qty6 : <input type="text" name="qty6" id="qty"/><br
Qty7 : <input type="text" name="qty7" id="qty"/><br>
Qty8 : <input type="text" name="qty8" id="qty"/><br>
<br><br>
Total : <input type="text" name="total" id="total"/>
<a href="javascript:sumInputs()">Sum</a>
Example: http://jsfiddle.net/fRd9N/1/
$(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));
}
body {
font-family: sans-serif;
}
#summation {
font-size: 18px;
font-weight: bold;
color:#174C68;
}
.txt {
background-color: #FEFFB0;
font-weight: bold;
text-align: right;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<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>
To sum with decimal use this:
In the javascript change parseInt with parseFloat and add this line tot.toFixed(2); for this result:
function findTotal(){
var arr = document.getElementsByName('qty');
var tot=0;
for(var i=0;i<arr.length;i++){
if(parseFloat(arr[i].value))
tot += parseFloat(arr[i].value);
}
document.getElementById('total').value = tot;
tot.toFixed(2);
}
Use step=".01" min="0" type="number" in the input filed
Qty1 : <input onblur="findTotal()" step=".01" min="0" type="number" name="qty" id="qty1"/><br>
Qty2 : <input onblur="findTotal()" step=".01" min="0" type="number" name="qty" id="qty2"/><br>
Qty3 : <input onblur="findTotal()" step=".01" min="0" type="number" name="qty" id="qty3"/><br>
Qty4 : <input onblur="findTotal()" step=".01" min="0" type="number" name="qty" id="qty4"/><br>
Qty5 : <input onblur="findTotal()" step=".01" min="0" type="number" name="qty" id="qty5"/><br>
Qty6 : <input onblur="findTotal()" step=".01" min="0" type="number" name="qty" id="qty6"/><br>
Qty7 : <input onblur="findTotal()" step=".01" min="0" type="number" name="qty" id="qty7"/><br>
Qty8 : <input onblur="findTotal()" step=".01" min="0" type="number" name="qty" id="qty8"/><br>
<br><br>
Total : <input type="number" step=".01" min="0" name="total" id="total"/>
Try:
Qty1 : <input onblur="findTotal()" type="text" name="qty" id="qty1"/><br>
Qty2 : <input onblur="findTotal()" type="text" name="qty" id="qty2"/><br>
Qty3 : <input onblur="findTotal()" type="text" name="qty" id="qty3"/><br>
Qty4 : <input onblur="findTotal()" type="text" name="qty" id="qty4"/><br>
Qty5 : <input onblur="findTotal()" type="text" name="qty" id="qty5"/><br>
Qty6 : <input onblur="findTotal()" type="text" name="qty" id="qty6"/><br>
Qty7 : <input onblur="findTotal()" type="text" name="qty" id="qty7"/><br>
Qty8 : <input onblur="findTotal()" type="text" name="qty" id="qty8"/><br>
<br><br>
Total : <input type="text" name="total" id="total"/>
<script type="text/javascript">
function findTotal(){
var arr = document.getElementsByName('qty');
var tot=0;
for(var i=0;i<arr.length;i++){
if(parseInt(arr[i].value))
tot += parseInt(arr[i].value);
}
document.getElementById('total').value = tot;
}
</script>