[英]How to add/remove element in list on the basis of selection of 2 dropdown list in multi select bootstrap dropdown jquery?
希望你們一切都好,一切都好。
我正在使用多 select 引導程序下拉 jquery。 我正在使用 asp.net 內核來填充列表框,它的工作正常,適合選擇,select 等等。
但我希望當我從Dropdown A
中的 select 元素時,必須從dropdown B
中刪除該元素,如果我從下拉 A 中取消選擇元素,則必須在下拉 B 中添加/顯示。 反之亦然,如果在下拉 B 中選擇了元素,則該元素從下拉 A 中刪除,如果 select 全部從下拉 A 中,則所有元素都從下拉 B 中刪除,反之亦然。 希望大家理解。
For example: If A,B,C,D values in dropdownlistA and if i select A then it must be disable or hide from dropdownB,if i select all then must remove all from dropdownB, and also vice virsa for dropdownB as well, Note: DropdownA and DropdownB both have same number of values/elements,same text,same value,
看法
@section AddToHead{
<link rel="stylesheet" href="~/css1/bootstrap-3.1.1.min.css" type="text/css" />
<link rel="stylesheet" href="~/css1/bootstrap-multiselect.css" type="text/css" />
<script type="text/javascript" src="https://code.jquery.com/jquery-1.8.2.js"></script>
<script type="text/javascript" src="~/js1/bootstrap-2.3.2.min.js"></script>
<script type="text/javascript" src="~/js1/bootstrap-multiselect.js"></script>
}
<form class="column" asp-controller="group" asp-action="createresult" style="height:100%;" method="post">
<span class="column" style="height:50px;">
@Html.ListBoxFor(x => x.AvailablePlayers, Model.AvailablePlayers, new { id = "PlayersTeamA", onChange = "getSelectedOptions(this)", multiple = "multiple" })
@Html.ValidationMessageFor(model => model.TeamOnePlayers)
</span>
<span class="column">
@Html.ListBoxFor(x => x.AvailablePlayers, Model.AvailablePlayers, new { id = "PlayersTeamB", onChange = "getSelectedOptions(this)", multiple = "multiple" })
@Html.ValidationMessageFor(model => model.TeamTwoPlayers)
</span>
</form>
</div>
@section Scripts {
<script type="text/javascript">
$(function () {
$('#PlayersTeamA').multiselect({
includeSelectAllOption: true
});
$('#PlayersTeamB').multiselect({
includeSelectAllOption: true
});
});
function getSelectedOptions(sel) {
var idddl = sel.id;
var opts = [],
opt;
var len = sel.options.length;
for (var i = 0; i < len; i++) {
opt = sel.options[i];
if (opt.selected) {
opts.push(opt);
var idul = sel.id;
alert(idul);
var ul = document.getElementById(idul);
ul.removeChild(ul.childNodes[1]);
}
}
return opts;
}
這是一個工作演示,如下所示:
@model Players
<form class="column" asp-controller="group" asp-action="createresult" style="height:100%;" method="post">
<div id="A">
<span class="column" style="height:50px;">
@Html.ListBoxFor(x => x.AvailablePlayers, Model.AvailablePlayers, new { id = "PlayersTeamA", multiple = "multiple" })
</span>
</div>
<div id="B">
<span class="column">
@Html.ListBoxFor(x => x.AvailablePlayers, Model.AvailablePlayers, new { id = "PlayersTeamB", multiple = "multiple" })
</span>
</div>
</form>
@section Scripts {
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-multiselect/0.9.15/js/bootstrap-multiselect.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-multiselect/0.9.15/css/bootstrap-multiselect.css"/>
<script>
$(function () {
$('#PlayersTeamA').multiselect({
includeSelectAllOption: true
});
$('#PlayersTeamB').multiselect({
includeSelectAllOption: true
});
});
var data = [];
$('#B option').each(function (index, item) {
data.push({ label: this.label, value: this.value });
});
$("#PlayersTeamA").change(function () {
var selectedText = $('#PlayersTeamA').val();
var newData = data;
selectedText.forEach(function (element, index, array) {
newData = newData.filter(function (el) { return el.value != element; });
});
$("#PlayersTeamB").multiselect('dataprovider', newData);
});
</script>
}
我的測試 model:
public class Players
{
public SelectList AvailablePlayers { get; set; }
}
public class AvailablePlayer
{
public int Id { get; set; }
public string Name { get; set; }
}
我的測試 controller:
[HttpGet]
public async Task<IActionResult> Index()
{
var player = new List<AvailablePlayer>()
{
new AvailablePlayer(){ Id=1,Name="aa"},
new AvailablePlayer(){ Id=2,Name="bb"},
new AvailablePlayer(){ Id=3,Name="cc"}
};
var model = new Players()
{
AvailablePlayers = new SelectList(player, "Id", "Name")
};
return View(model);
}
看來您正在使用引導程序的多選。 在文檔中,我們可以看到您可以按如下方式配置數據(在特定輸入上執行 .multiselect 之后,就像您在示例中所做的那樣):
var data = [
{label: "Messi", value: "Messi"},
{label: "Ronaldo", value: "Ronaldo"}
];
$("#PlayersTeamA").multiselect('dataprovider', data);
現在,附加到#PlayersTeamA 的“onchange”事件並更新#PlayersTeamB 的可用數據,例如:
$("#PlayersTeamA").change(function () {
var selectedText = $(this).find("option:selected").text();
var newData = data.filter(function(el) { return el.value == selectedText; });
$("#PlayersTeamB").multiselect('dataprovider', newData);
});
我相信,您還必須附加到 #PlayersTeamB 的 onchange (以便它在兩個方向上都有效)。
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