我动态创建了table
。页面加载时有一列为空,但是当我选择下拉菜单(其他列)的数量和默认价格值(其他列)时,它会填充值。我想使用jQuery添加此过程创建的总值,并显示总值。
有没有人有任何想法我怎么能这样做?我已经尝试了很多,但没有结果出现。
我试试这个:
$(document).each("[id^=total]", function(event){
var num = this.id.slice(5);
var sum = 0;
var value = $('#total'+num).text();
sum += parseFloat(this.value);
$('#sum').text(sum);
});
HTML(将显示结果):
<tr>
<th colspan="6" style="text-align:right">Total:</th>
<th colspan="2" style="text-align:center"><span id="sum"></span></th>
</tr>
HTML(id =&#39; qua2&#39;是1到20的下拉菜单):
<tr>
<td><center><selectclass='choose'id='qua2'></select></center></td>
<td><center><spanid='yprice2'>101.10</span></center></td>
<td><center><spanid='total2'></span></center></td>
</tr>
注意:
在创建表后创建列total
。我选择一个下拉值并进行此过程(下拉值*价格).Result显示在列总数中。
更新(我使用此脚本,但id='sum'
中的结果为NaN
):
$(document).on('change', "[id^=qua]", function(event){
var num = this.id.slice(3);
var sum = 0;
var value = $("#qua"+num).val();
var yprc = $("#yprice"+num).text();
var amount = value * yprc;
amount = amount.toFixed(2);
var $sum = $("#sum");
var $total = $("#total"+num);
$total.html(amount);
$("[id^=total]").each(function(){
sum += parseFloat($(this).text());
});
$sum.text(sum);
});
答案 0 :(得分:3)
<强> Working fiddle 强>
我建议避免使用id并改为使用类:
calc_total();
$(".choose").on('change', function(){
var parent = $(this).closest('tr');
var price = parseFloat($('.price',parent).text());
var choose = parseFloat($('.choose',parent).val());
$('.total',parent).text(choose*price);
calc_total();
});
function calc_total(){
var sum = 0;
$(".total").each(function(){
sum += parseFloat($(this).text());
});
$('#sum').text(sum);
}
希望这有帮助。
calc_total();
$(".choose").on('change', function(){
var parent = $(this).closest('tr');
var price = parseFloat($('.price',parent).text());
var choose = parseFloat($('.choose',parent).val());
$('.total',parent).text(choose*price);
calc_total();
});
function calc_total(){
var sum = 0;
$(".total").each(function(){
sum += parseFloat($(this).text());
});
$('#sum').text(sum);
}
&#13;
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table border=1>
<tr>
<td>
<center>
<select class='choose'>
<option value='1'>1</option>
<option value='2'>2</option>
<option value='3'>3</option>
</select>
</center>
</td>
<td>
<center>
<span class='price'>100</span>
</center>
</td>
<td>
<center>
<span class='total'>100</span>
</center>
</td>
</tr>
<tr>
<td>
<center>
<select class='choose'>
<option value='1'>1</option>
<option value='2'>2</option>
<option value='3'>3</option>
</select>
</center>
</td>
<td>
<center>
<span class='price'>100</span>
</center>
</td>
<td>
<center>
<span class='total'>100</span>
</center>
</td>
</tr>
<tr>
<td>
<center>
<select class='choose'>
<option value='1'>1</option>
<option value='2'>2</option>
<option value='3'>3</option>
</select>
</center>
</td>
<td>
<center>
<span class='price'>100</span>
</center>
</td>
<td>
<center>
<span class='total'>100</span>
</center>
</td>
</tr>
<tr>
<th colspan="2" style="text-align:right">Total:</th>
<th colspan="2" style="text-align:center"><span id="sum"></span></th>
</tr>
</table>
&#13;
答案 1 :(得分:0)
尝试这种方式:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Sum Total for Column in jQuery </title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script>
$(document).ready(function () {
$('table thead th').each(function (i) {
calculateColumn(i);
});
});
function calculateColumn(index) {
var total = 0;
$('table tr').each(function () {
var value = parseInt($('td', this).eq(index).text());
if (!isNaN(value)) {
total += value;
}
});
$('table tfoot td').eq(index).text('Total: ' + total);
}
</script>
</head>
<body>
<table id="sum_table" width="300" border="1">
<thead>
<tr>
<th>ITEM 1</th>
<th>ITEM 2</th>
<th>ITEM 3</th>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
</tr>
</tbody>
<tfoot>
<tr>
<td>Total:</td>
<td>Total:</td>
<td>Total:</td>
</tr>
</tfoot>
</table>
</body>
</html>
希望有帮助。