<!DOCTYPE HTML>
<html lang="en-US">
<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>
</head>
<body>
<table width="300px" border="1" style="border-collapse:collapse;background-color:#E8DCFF">
<tr>
<td width="40px">1</td>
<td>ราคาบวก</td>
<td><input class="num" type="number"/></td>
</tr>
<tr>
<td>2</td>
<td>ราคาบวก</td>
<td><input class="num" type="number"/></td>
</tr>
<tr>
<td>3</td>
<td>ราคาบวก</td>
<td><input class="num" type="number"/></td>
</tr>
<tr>
<td>4</td>
<td>ราคาบวก</td>
<td><input class="num" type="number"/></td>
</tr>
<tr>
<td>5</td>
<td>ราคาบวก</td>
<td><input class="num" type="number"/></td>
</tr>
<tr>
<td>6</td>
<td>ราคาส่วนลด</td>
<td><input class="dec" type="number"/></td>
</tr>
<tr id="summation">
<td> </td>
<td align="right">Sum :</td>
<td align="center"><span class="sum">0</span></td>
</tr>
</table>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$(".num,.dec").keyup( function(){
var sum = 0;
$(".num").each(function(){
sum = Number($(this).val());
});
sum-= Number($(".dec").val());
$(".sum").text(sum);
});
});
</script>
</body>
</html>
แสดงกระทู้
