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我正在使用文本框將城市名稱以及我想添加關閉按鈕的城市名稱添加到列表框中,因此我可以輕松地從列表框中刪除城市名稱。
下面的圖像是為了更好地理解
的HTML
<asp:TextBox ID="txtcity" runat="Server"></asp:TextBox>
<asp:Button ID="btnAddcity" runat="server" Text="Add" />
<asp:ListBox ID="listBoxcity" runat="server"></asp:ListBox>
<span id="spcity"></span>
jQuery查詢
$("#btnAddcity").click(function () {
var txt = $("#txtcity").val();
$('[id$=listBoxcity]').show();
var alreadyExist = false;
$('[id$=listBoxcity] option').each(function () {
if ($(this).val() == txt) {
$("#spcity").text('City alread exists');
alreadyExist = true;
return;
}
});
if (!alreadyExist) {
$('[id$=listBoxcity]').append($('<option></option>').attr('value', txt).text(txt));
}
});
我刪除了選項選擇,因為您不能在選項上添加刪除按鈕。 如果您嘗試執行此操作,請看一下:
$("#btnAddcity").click(function () { var txt = $("#txtcity").val(); $('[id$=listBoxcity]').show(); var alreadyExist = false; $('[id$=listBoxcity] option').each(function () { if ($(this).val() == txt) { $("#spcity").text('City alread exists'); alreadyExist = true; return; } }); if (!alreadyExist) { $('[id$=listBoxcity]').append($('<span></span>').attr('value', txt).text(txt)); $('[id$=listBoxcity]').append($('<a href="#" class="delete">x</a><br>')); } }); $(document).on('click', 'a.delete', function(event){ $(this).prev('span').remove(); $(this).next('br').remove(); $(this).remove(); });
a.delete { margin-left: 10px; width: 20px; height: 20px; background: #82854C; border-radius: 100%; text-align: center; display: inline-block; color: #fff; vertical-align: middle; text-decoration: none; }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"></script> <table> <tr> <td><input id='txtcity' type="text" /></td> <td><input id='btnAddcity' type='button' value='Add' /></td> </tr> </table> <!-- <select id='listBoxcity' multiple="multiple" style='width:300px; height:100px;'> </select> --> <div id='listBoxcity' multiple="multiple" style='width:300px; height:100px;'> </div> <span id='spcity'></span>
這個片段是對我工作:)
$(document).ready(function(){
$("#btnAddcity").click(function () {
var txt = $("#txtcity").val();
$('[id$=listBoxcity]').show();
var alreadyExist = false;
$('[id$=listBoxcity] option').each(function () {
if ($(this).val() == txt) {
$("#spcity").text('City alread exists');
alreadyExist = true;
return;
}
});
var count = 0;
if (!alreadyExist) {
count++;
$('[id$=listBoxcity]').append($('<span></span>').attr('value', txt).text(txt));
$('[id$=listBoxcity]').append($('<div class="delete">x</div><br>'));
}
$('.delete').on('click',function(e){
console.log($(this).closest('span'));
$(this).next('br').remove();
$(this).prev('span').remove();
$(this).remove();
});
});
});
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