从jQuery中动态创建的行计算列的总和 [英] calculate the sum of the column from dynamically created rows in jquery
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问题描述
我正在尝试使用此代码通过动态创建的行来计算该列的总数
Hi I am trying to calculate the overall total of the column from dynamically created rows using this using this code
function calculateSubTotal () {
var subtotal = 0;
$('.total_cost').each(function() {
subtotal += parseFloat($(this).val());
subtotal = subtotal.toFixed(2);
});
$('#subtotal').val(subtotal.toFixed(2));
}
，但不起作用.这是完整的代码
but its not working. here's the complete code
var rowCount = 1;
$('#add').click(function() {
rowCount++;
$('#orders').append('<tr id="row'+rowCount+'"><td><input class="form-control product_price" type="number" data-type="product_price" id="product_price_'+rowCount+'" name="product_price[]" for="'+rowCount+'"/></td><input class="form-control" type="hidden" data-type="product_id" id="product_id_'+rowCount+'" name="product_id[]" for="'+rowCount+'"/><td><input class="form-control quantity" type="number" class="quantity" id="quantity_'+rowCount+'" name="quantity[]" for="'+rowCount+'"/> </td><td><input class="form-control total_cost" type="text" id="total_cost_'+rowCount+'" name="total_cost[]" for="'+rowCount+'" readonly/> </td><td><button type="button" name="remove" id="'+rowCount+'" class="btn btn-danger btn_remove cicle">-</button></td></tr>');
});
// Add a generic event listener for any change on quantity or price classed inputs
$("#orders").on('input', 'input.quantity,input.product_price', function() {
getTotalCost($(this).attr("for"));
});
$(document).on('click', '.btn_remove', function() {
var button_id = $(this).attr('id');
$('#row'+button_id+'').remove();
});
// Using a new index rather than your global variable i
function getTotalCost(ind) {
var qty = $('#quantity_'+ind).val();
var price = $('#product_price_'+ind).val();
var totNumber = (qty * price);
var tot = totNumber.toFixed(2);
$('#total_cost_'+ind).val(tot);
}
function calculateSubTotal () {
var subtotal = 0;
$('.total_cost').each(function() {
subtotal += parseFloat($(this).val());
subtotal = subtotal.toFixed(2);
});
$('#subtotal').val(subtotal.toFixed(2));
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" />
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
</head>
<body>
<div class="col-md-12">
<div class="line line-dashed line-lg pull-in"></div>
<div class="row">
<table class="table table-bordered" id="orders">
<tr>
<th>Price</th>
<th>Quantity</th>
<th>Total Cost</th>
<th>
</th>
</tr>
<tr>
<td><input class="form-control product_price" type='number' data-type="product_price" id='product_price_1' name='product_price[]' for="1"/></td> <!-- purchase_cost -->
<td><input class="form-control quantity" type='number' id='quantity_1' name='quantity[]' for="1"/></td>
<td><input class="form-control total_cost" type='text' id='total_cost_1' name='total_cost[]' for='1' readonly/></td>
<td><button type="button" name="add" id="add" class="btn btn-success circle">+</button></td>
</tr>
</table>
<input class="form-control" type='hidden' data-type="product_id_1" id='product_id_1' name='product_id[]'/>
</div>
</div>
<div class="line line-dashed line-lg pull-in" style="clear: both;"></div>
<div class="col-md-12 nopadding">
<div class="col-md-4 col-md-offset-4 pull-right nopadding">
<div class="col-md-8 pull-right nopadding">
<div class="form-group">
<td><input class="form-control subtotal" type='text' id='subtotal' name='subtotal' readonly/></td>
</div>
</div>
<div class="col-md-3 pull-right">
<div class="form-group">
<label>Subtotal</label>
</div>
</div>
</div>
</div>
</body>
</html>非常感谢您！
推荐答案
您不调用函数来计算总数，要解决此问题，请在 getTotalCost中调用您的或您需要的任何地方，例如: calculateSubTotal()函数
you don't call your function to calc total, to fix this, call your calculateSubTotal() function inside getTotalCost or anywhere you need, for example:
var rowCount = 1;
$('#add').click(function() {
rowCount++;
$('#orders').append('<tr id="row'+rowCount+'"><td><input class="form-control product_price" type="number" data-type="product_price" id="product_price_'+rowCount+'" name="product_price[]" for="'+rowCount+'"/></td><input class="form-control" type="hidden" data-type="product_id" id="product_id_'+rowCount+'" name="product_id[]" for="'+rowCount+'"/><td><input class="form-control quantity" type="number" class="quantity" id="quantity_'+rowCount+'" name="quantity[]" for="'+rowCount+'"/> </td><td><input class="form-control total_cost" type="text" id="total_cost_'+rowCount+'" name="total_cost[]" for="'+rowCount+'" readonly/> </td><td><button type="button" name="remove" id="'+rowCount+'" class="btn btn-danger btn_remove cicle">-</button></td></tr>');
});
// Add a generic event listener for any change on quantity or price classed inputs
$("#orders").on('input', 'input.quantity,input.product_price', function() {
getTotalCost($(this).attr("for"));
});
$(document).on('click', '.btn_remove', function() {
var button_id = $(this).attr('id');
$('#row'+button_id+'').remove();
});
// Using a new index rather than your global variable i
function getTotalCost(ind) {
var qty = $('#quantity_'+ind).val();
var price = $('#product_price_'+ind).val();
var totNumber = (qty * price);
var tot = totNumber.toFixed(2);
$('#total_cost_'+ind).val(tot);
calculateSubTotal();
}
function calculateSubTotal() {
var subtotal = 0;
$('.total_cost').each(function() {
subtotal += parseFloat($(this).val());
});
$('#subtotal').val(subtotal);
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" />
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
</head>
<body>
<div class="col-md-12">
<div class="line line-dashed line-lg pull-in"></div>
<div class="row">
<table class="table table-bordered" id="orders">
<tr>
<th>Price</th>
<th>Quantity</th>
<th>Total Cost</th>
<th>
</th>
</tr>
<tr>
<td><input class="form-control product_price" type='number' data-type="product_price" id='product_price_1' name='product_price[]' for="1"/></td> <!-- purchase_cost -->
<td><input class="form-control quantity" type='number' id='quantity_1' name='quantity[]' for="1"/></td>
<td><input class="form-control total_cost" type='text' id='total_cost_1' name='total_cost[]' for='1' readonly/></td>
<td><button type="button" name="add" id="add" class="btn btn-success circle">+</button></td>
</tr>
</table>
<input class="form-control" type='hidden' data-type="product_id_1" id='product_id_1' name='product_id[]'/>
</div>
</div>
<div class="line line-dashed line-lg pull-in" style="clear: both;"></div>
<div class="col-md-12 nopadding">
<div class="col-md-4 col-md-offset-4 pull-right nopadding">
<div class="col-md-8 pull-right nopadding">
<div class="form-group">
<td><input class="form-control subtotal" type='text' id='subtotal' name='subtotal' readonly/></td>
</div>
</div>
<div class="col-md-3 pull-right">
<div class="form-group">
<label>Subtotal</label>
</div>
</div>
</div>
</div>
</body>
</html>这篇关于从jQuery中动态创建的行计算列的总和的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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