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我該如何修改以獲得總和值?我測試過這段代碼可以在文本框固定爲HTML時自動求和。但它不能與動態輸入框自動求和。我錯過了什麼?如何將總價值與動態輸入框總和?
一個問題 - 如何在用戶刪除行
下面是測試Auto Sum with dynamic add input box Jsfillder
的JavaScript負值
//this is dynamic add input box
$(document).ready(function() {
var max_fields = 10; //maximum input boxes allowed
var wrapper = $(".input_fields_wrap"); //Fields wrapper
var add_button = $(".add_field_button"); //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><input type="text" name="mytext[]"/><a href="#" class="remove_field">Remove</a></div>'); //add input box
$(wrapper).append('<div class="col-lg-12 product_wrapper">' +
'<div class="col-lg-3" >' +
'<label>Product</label>' +
'<textarea type="text" class="product_textarea" name="Product[]"></textarea>' +
'</div>' +
'<div class="col-lg-6">' +
'<label>Description</label>' +
'<textarea class="description_textarea" name="ProductDescription[]" style=""></textarea>' +
'</div>'+
'<div class="col-lg-2 form-group">' +
'<label>Price</label>' +
'<input type="text" class="price_tag form-control" name="Price[]"/>' +
'</div>' +
'<a href="#" class="remove_field btn btn-danger pull-right">cancel</a>' +
'</div>' );
}
});
$(wrapper).on("click", ".remove_field", function (e) { //user click on remove text
e.preventDefault(); $(this).parent('.product_wrapper').remove(); x--;
})
//here is my calculate function
//Iterate through each Textbox and add keyup event handler
$(".price_tag").each(function() {
$(this).keyup(function (e) {
e.preventDefault();
//Initialize total to 0
var total = 0;
$(".price_tag").each(function() {
// Sum only if the text entered is number and greater than 0
if (!isNaN(this.value) && this.value.length != 0) {
total += parseFloat(this.value);
}
});
//Assign the total to label
//.toFixed() method will roundoff the final sum to 2 decimal places
$('#total').val(total.toFixed(2));
});
});
});
HTML
<div class="input_fields_wrap"></div>
<button class="add_field_button btn btn-primary pull-right">Add More Fields</button>
<div>total</div>
<div><input class="total" id="total"type="text" name="txt"/></div>
thx!它可以工作,但是如何在用戶刪除動態文本框1並更新總和值時如何增強它? – nonstop328
您可以提取calculateTotal()函數並從兩個地方調用它。 –