如何从jQuery/JavaScript中提取动态创建的输入字段



从引导程序中从容器内动态创建的文本字段中提取信息时遇到问题。对于"Dropoff Locations",我需要能够将地址的信息存储到一个地址中,然后将每个完整地址存储到一组地址中。我不确定如何做到这一点,尤其是使用jQuery。

<!-- Dropoff Locations -->
<div class=" mb-4">
<div class="card border-0 shadow">
<div class="card-body text-center">
<h5 class="card-title mb-0">Drop-Off Location(s)</h5>
<hr>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 table-responsive">
<table class="table table-bordered table-hover table-sortable" id="tab_logic">
<thead>
<tr>
<th class="text-center">
Street Address
</th>
<th class="text-center">
City
</th>
<th class="text-center">
State
</th>
</tr>
</thead>
<tbody>
<tr id='addr0' data-id="0" class="hidden">
<td data-name="name">
<input type="text" name='name0'  placeholder='Street Address' class="form-control"/>
</td>
<td data-name="mail">
<input type="text" name='mail0' placeholder='City' class="form-control"/>
</td>
<td data-name="desc">
<input type="text" name="desc0" placeholder="State" class="form-control"/>
</td>
<td data-name="del">
<button name="del0" class='btn btn-danger glyphicon glyphicon-remove row-remove'><span aria-hidden="true">×</span></button>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<a id="add_row" class="btn btn-primary float-right text-white">Add Stop</a>

这是的脚本代码

$(document).ready(function() {
$("#add_row").on("click", function() {
// Dynamic Rows Code
// Get max row id and set new id
var newid = 0;
$.each($("#tab_logic tr"), function() {
if (parseInt($(this).data("id")) > newid) {
newid = parseInt($(this).data("id"));
}
});
newid++;
var tr = $("<tr></tr>", {
id: "addr"+newid,
"data-id": newid
});
// loop through each td and create new elements with name of newid
$.each($("#tab_logic tbody tr:nth(0) td"), function() {
var td;
var cur_td = $(this);
var children = cur_td.children();
// add new td and element if it has a nane
if ($(this).data("name") !== undefined) {
td = $("<td></td>", {
"data-name": $(cur_td).data("name")
});
var c = $(cur_td).find($(children[0]).prop('tagName')).clone().val("");
c.attr("name", $(cur_td).data("name") + newid);
c.appendTo($(td));
td.appendTo($(tr));
} else {
td = $("<td></td>", {
'text': $('#tab_logic tr').length
}).appendTo($(tr));
}
});
// add delete button and td
/*
$("<td></td>").append(
$("<button class='btn btn-danger glyphicon glyphicon-remove row-remove'></button>")
.click(function() {
$(this).closest("tr").remove();
})
).appendTo($(tr));
*/
// add the new row
$(tr).appendTo($('#tab_logic'));
$(tr).find("td button.row-remove").on("click", function() {
$(this).closest("tr").remove();
});


// Sortable Code
var fixHelperModified = function(e, tr) {
var $originals = tr.children();
var $helper = tr.clone();
$helper.children().each(function(index) {
$(this).width($originals.eq(index).width())
});
return $helper;
};
$(".table-sortable tbody").sortable({
helper: fixHelperModified
}).disableSelection();
$(".table-sortable thead").disableSelection();

$("#add_row").trigger("click");

如果能提供任何帮助,那就太好了!

您可以添加一个对象"addresses"来存储所有地址,然后在输入字段的"change"事件中,获取要更改的字段的行id和名称,然后将其添加到addresses对象中。

我在代码中添加了一个基本示例,减去了导致不同错误的排序。运行代码片段以查看其工作原理。

$(document).ready(function() {
var addresses = {};

$(document).on('change', '#tab_logic input', function () {
var rowid = $(this).parents('tr').attr('id');
var name = $(this).attr('name');
// Initialize address row if it hasn't been created yet.
if (!addresses[rowid]) addresses[rowid] = {};
// Add or update this field.
addresses[rowid][name] = $(this).val();

console.log(addresses);
});
$("#add_row").on("click", function() {
// Dynamic Rows Code
// Get max row id and set new id
var newid = 0;
$.each($("#tab_logic tr"), function() {
if (parseInt($(this).data("id")) > newid) {
newid = parseInt($(this).data("id"));
}
});
newid++;

console.log(newid);
var tr = $("<tr></tr>", {
id: "addr"+newid,
"data-id": newid
});
// loop through each td and create new elements with name of newid
$.each($("#tab_logic tbody tr:nth(0) td"), function() {
var td;
var cur_td = $(this);
var children = cur_td.children();
// add new td and element if it has a nane
if ($(this).data("name") !== undefined) {
td = $("<td></td>", {
"data-name": $(cur_td).data("name")
});
var c =   $(cur_td).find($(children[0]).prop('tagName')).clone().val("");
c.attr("name", $(cur_td).data("name") + newid);
c.appendTo($(td));
td.appendTo($(tr));
} else {
td = $("<td></td>", {
'text': $('#tab_logic tr').length
}).appendTo($(tr));
}
});
// add the new row
$(tr).appendTo($('#tab_logic'));
$(tr).find("td button.row-remove").on("click", function() {
$(this).closest("tr").remove();
});
});
});
$("#add_row").trigger("click");
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<!-- Dropoff Locations -->
<div class=" mb-4">
<div class="card border-0 shadow">
<div class="card-body text-center">
<h5 class="card-title mb-0">Drop-Off Location(s)</h5>
<hr>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 table-responsive">
<table class="table table-bordered table-hover table-sortable" id="tab_logic">
<thead>
<tr>
<th class="text-center">
Street Address
</th>
<th class="text-center">
City
</th>
<th class="text-center">
State
</th>
</tr>
</thead>
<tbody>
<tr id='addr0' data-id="0" class="hidden">
<td data-name="name">
<input type="text" name='name0'  placeholder='Street Address' class="form-control"/>
</td>
<td data-name="mail">
<input type="text" name='mail0' placeholder='City' class="form-control"/>
</td>
<td data-name="desc">
<input type="text" name="desc0" placeholder="State" class="form-control"/>
</td>
<td data-name="del">
<button name="del0" class='btn btn-danger glyphicon glyphicon-remove row-remove'><span aria-hidden="true">×</span></button>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<a id="add_row" class="btn btn-primary float-right text-white">Add Stop</a>

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