[英]How to retrieve jQuery values back from html
When opening a modal, I'm assigning values with jQuery so they could be used inside the model:打开模态时,我使用 jQuery 分配值,以便它们可以在模型中使用:
Modal trigger:模态触发器:
<a data-toggle='modal' data-name='$nameCap' data-id='$id' class='open-DeleteDialog' href='#deleteDialog'><i class='fas fa-trash-alt'></i></a>
main.js:主要.js:
$(document).on("click", ".open-DeleteDialog", function () {
var categoryId = $(this).data('id');
var categoryName = $(this).data('name');
$("#categoryId").val( categoryId );
$('#deleteConfirmation').text("Are you sure you want to delete this category: " + categoryName + "?");
});
Inside the modal:模态内部:
<div class="modal-body">
<div id="deleteConfirmation">
<!-- Filled with confirmation from jquery -->
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">Cancel</button>
<button id="saveChanges" type="button" class="btn btn-danger">Delete</button>
<script>
$(function() {
$('#saveChanges').on('click', function() {
var id = $( "#categoryId").val();
console.log(id)
});
});
</script>
I'm trying to get back #categoryId value but when logging it it returns undefined.我正在尝试取回 #categoryId 值,但是在记录它时它返回未定义。 What am I doing wrong?
我究竟做错了什么?
You should add categoryId
element with hidden
type like this.您应该像这样添加具有
hidden
类型的categoryId
元素。
<input type="hidden" id="categoryId" />
$(document).on("click", ".open-DeleteDialog", function () { var categoryId = $(this).data('id'); $("#categoryId").val(categoryId); });
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <a data-toggle='modal' data-name='$nameCap' data-id='123' class='open-DeleteDialog' href='#deleteDialog'><i class='fas fa-trash-alt'></i>123</a> <a data-toggle='modal' data-name='$nameCap' data-id='456' class='open-DeleteDialog' href='#deleteDialog'><i class='fas fa-trash-alt'></i>456</a> <input type="hidden" id="categoryId" /> <hr/> <div class="modal-body"> <div id="deleteConfirmation"> <!-- Filled with confirmation from jquery --> </div> </div> <div class="modal-footer"> <button type="button" class="btn btn-secondary" data-dismiss="modal">Cancel</button> <button id="saveChanges" type="button" class="btn btn-danger">Delete</button> <script> $(function() { $('#saveChanges').on('click', function() { var id = $( "#categoryId").val(); console.log(id) }); }); </script>
$(function(){ var categoryId; $(document).on('click', '.open-DeleteDialog', function(e){ categoryId = $(this).data('id'); }) $('#saveChanges').on('click', function(e){ alert(categoryId); }) })
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <a data-toggle='modal' data-name='$nameCap' data-id='123' class='open-DeleteDialog' href='#deleteDialog'><i class='fas fa-trash-alt'></i>123</a> <a data-toggle='modal' data-name='$nameCap' data-id='456' class='open-DeleteDialog' href='#deleteDialog'><i class='fas fa-trash-alt'></i>456</a> <button id="saveChanges" type="button" class="btn btn-danger">Delete</button>
Why not make global variable instead of creating hidden element?为什么不创建全局变量而不是创建隐藏元素?
var categoryId;
$(document).on("click", ".open-DeleteDialog", function () {
// initialize category id
categoryId = $(this).data('id');
});
Getting category id value获取类别 ID 值
$('#saveChanges').on('click', function() {
console.log(categoryId )
});
The code will look like this代码看起来像这样
$(function() {
// global variable
var categoryId;
$(document).on("click", ".open-DeleteDialog", function () {
// initialize category id
categoryId = $(this).data('id');
});
$('#saveChanges').on('click', function() {
console.log(categoryId )
});
})
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