我想使用 jQuery 计算商品价格乘以商品数量的总和。一旦输入金额，我就会使用动态 HTML 输入字段，它应该根据数量计算并给出总金额。请看下面的代码
我的 HTML 代码
$(document).ready(function() {
var max_fields = 10; //maximum input boxes allowed
var wrapper = $(".add_new_field"); //Fields wrapper
var add_button = $(".add_another_product"); //Add button ID
var x = 1; //initlal text box count
$(add_button).click(function(e){ //on add input button click
e.preventDefault();
if(x < max_fields){ //max input box allowed
x++; //text box increment
$(wrapper).append('<div class="add_new_field"><div class="row"><div class="col-md-4"><div class="form-group"><label class="col-form-label"> Enter Product Name</label><input type="text" class="form-control" name="pname[]" placeholder="Product Name" tabindex="1"/></div></div><div class="col-md-4"><div class="form-group"><label class="col-form-label"> No. of Pieces</label><input type="text" class="form-control" name="pcount[]" placeholder="Product Inventory" tabindex="2" /></div></div><div class="col-md-3"><div class="form-group"><label class="col-form-label"> Estimated Amount</label><input type="text" class="form-control" name="estamount[]" placeholder="Product Inventory" tabindex="2" /></div><p>Amount: <span id="Amount"></span></p></div><a href="#" class="remove_field"><i class="fa fa-remove"></i></a></div></div>'); //add input box
}
});
$(wrapper).on("click",".remove_field", function(e){ //user click on remove text
e.preventDefault(); $(this).parent('div').remove(); x--;
})
});
$('#EstmTotal').blur(function() {
$('.add_new_field').each(function() {
$(this).find('#Amount').html($('#PCount(0)', this).val() * $('#EstmTotal(0)', this).val());
});
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="add_new_field">
<div class="row">
<div class="col-md-4">
<div class="form-group">
<label class="col-form-label"> Enter Product Name</label>
<input type="text" class="form-control" name="pname[]" id="PName" placeholder="Product Name" />
</div>
</div>
<div class="col-md-4">
<div class="form-group">
<label class="col-form-label"> No. of Pieces</label>
<input type="text" class="form-control" name="pcount[]" id="PCount" placeholder="No.Of Items" />
</div>
</div>
<div class="col-md-3">
<div class="form-group">
<label class="col-form-label"> Estimated Amount</label>
<input type="text" class="form-control" name="estamount[]" id="EstmTotal" placeholder="Estimated Amount of Each" />
</div>
<p>Amount: <span id="Amount"></span></p>
</div>
<!--<div class="col-md-1 removebtn"><a href="#" class="remove_field"><i class="fa fa-remove"></i></a></div>-->
</div>
</div>
<button class="add_another_product">Add another Product <i class="fa fa-plus"></i></button>请查看图片以更好地理解问题
总有一个可供讨论的选项
最佳答案
这里有完整的代码，请尝试一下。它会根据您的要求工作。
<!DOCTYPE html>
<html>
<head>
<title>Demo</title>
<script
src="https://code.jquery.com/jquery-3.3.1.min.js"
></script>
<script type="text/javascript">
function calculate(id){ console.log(id);
// $('#EstmTotal').on('blur',function(){
$(id).parents('.add_new_field').each(function() {
var count = $(this).find("#PCount").val();
var amount = $(this).find("#EstmTotal").val();
$(this).find('#Amount').html(count*amount);
});
// });
}
$(document).ready(function(){
$(".add_another_product").on('click',function(){
var html = '<div class="add_new_field">';
html += '<div class="row">';
html += '<div class="col-md-4">';
html += '<div class="form-group">';
html += '<label class="col-form-label"> Enter Product Name</label>';
html += '<input type="text" class="form-control" name="pname[]" id="PName" placeholder="Product Name"/></div></div>';
html += '<div class="col-md-4"><divclass="form-group"><label class="col-form-label"> No. of Pieces</label>';
html += '<input type="text" class="form-control" name="pcount[]" id="PCount" placeholder="No.Of Items"/>';
html += '</div></div>';
html += '<div class="col-md-3">';
html += '<div class="form-group">';
html += '<label class="col-form-label"> Estimated Amount</label><input type="text" class="form-control" name="estamount[]" id="EstmTotal" placeholder="Estimated Amount of Each" onblur="calculate(EstmTotal)" />';
html += '</div><p>Amount: <span id="Amount"></span></p></div>';
html += '</div></div>';
$(this).before(html);
})
})
</script>
</head>
<body>
<div class="add_new_field">
<div class="row">
<div class="col-md-4">
<div class="form-group">
<label class="col-form-label"> Enter Product Name</label>
<input type="text" class="form-control" name="pname[]" id="PName" placeholder="Product Name"/>
</div>
</div>
<div class="col-md-4">
<div class="form-group">
<label class="col-form-label"> No. of Pieces</label>
<input type="text" class="form-control" name="pcount[]" id="PCount" placeholder="No.Of Items"/>
</div>
</div>
<div class="col-md-3">
<div class="form-group">
<label class="col-form-label"> Estimated Amount</label>
<input type="text" class="form-control" name="estamount[]" id="EstmTotal" onblur="calculate(EstmTotal)" placeholder="Estimated Amount of Each"/>
</div>
<p>Amount: <span id="Amount"></span></p>
</div>
<!--<div class="col-md-1 removebtn"><a href="#" class="remove_field"><i class="fa fa-remove"></i></a></div>-->
</div>
</div>
<button class="add_another_product">Add another Product <i class="fa fa-plus"></i></button>
</body>
</html>
关于javascript - 使用 jQuery 通过动态 HTML 输入字段将商品总数量计算为商品价格，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/51893338/