jQuery获取select onChange的值

jQuery获取在Change事件上使用select html元素的值

演示和更多的例子

$(document).ready(function () { $('body').on('change','#select_box', function() { $('#show_only').val(this.value); }); }); <!DOCTYPE html> <html> <title>jQuery Select OnChnage Method</title> <head> <script src="https://code.jquery.com/jquery-3.3.1.min.js"></script> </head> <body> <select id="select_box"> <option value="">Select One</option> <option value="One">One</option> <option value="Two">Two</option> <option value="Three">Three</option> <option value="Four">Four</option> <option value="Five">Five</option> </select> <br><br> <input type="text" id="show_only" disabled=""> </body> </html>

2019-04-22 17:10:38

$('#select-id').change(function() {
    console.log($(this).val());
});

2021-06-05 02:59:35

jQuery获取在Change事件上使用select html元素的值

演示和更多的例子

$(document).ready(function () { $('body').on('change','#select_box', function() { $('#show_only').val(this.value); }); }); <!DOCTYPE html> <html> <title>jQuery Select OnChnage Method</title> <head> <script src="https://code.jquery.com/jquery-3.3.1.min.js"></script> </head> <body> <select id="select_box"> <option value="">Select One</option> <option value="One">One</option> <option value="Two">Two</option> <option value="Three">Three</option> <option value="Four">Four</option> <option value="Five">Five</option> </select> <br><br> <input type="text" id="show_only" disabled=""> </body> </html>

2019-04-22 17:10:38

寻找jQuery站点

HTML:

<form>
  <input class="target" type="text" value="Field 1">
  <select class="target">
    <option value="option1" selected="selected">Option 1</option>
    <option value="option2">Option 2</option>
  </select>
</form>
<div id="other">
  Trigger the handler
</div>

JAVASCRIPT:

$( ".target" ).change(function() {
  alert( "Handler for .change() called." );
});

jQuery的例子:

为所有文本输入元素添加有效性测试:

$( "input[type='text']" ).change(function() {
  // Check input( $( this ).val() ) for validity here
});

2015-01-15 15:06:33

尝试事件委托方法，这几乎适用于所有情况。

$(document.body).on('change',"#selectID",function (e) {
   //doStuff
   var optVal= $("#selectID option:selected").val();
});

2015-03-17 15:00:41

我想补充一点，谁需要完整的自定义头功能

   function addSearchControls(json) {
        $("#tblCalls thead").append($("#tblCalls thead tr:first").clone());
        $("#tblCalls thead tr:eq(1) th").each(function (index) {
            // For text inputs
            if (index != 1 && index != 2) {
                $(this).replaceWith('<th><input type="text" placeholder=" ' + $(this).html() + ' ara"></input></th>');
                var searchControl = $("#tblCalls thead tr:eq(1) th:eq(" + index + ") input");
                searchControl.on("keyup", function () {
                    table.column(index).search(searchControl.val()).draw();
                })
            }
            // For DatePicker inputs
            else if (index == 1) {
                $(this).replaceWith('<th><input type="text" id="datepicker" placeholder="' + $(this).html() + ' ara" class="tblCalls-search-date datepicker" /></th>');

                $('.tblCalls-search-date').on('keyup click change', function () {
                    var i = $(this).attr('id');  // getting column index
                    var v = $(this).val();  // getting search input value
                    table.columns(index).search(v).draw();
                });

                $(".datepicker").datepicker({
                    dateFormat: "dd-mm-yy",
                    altFieldTimeOnly: false,
                    altFormat: "yy-mm-dd",
                    altTimeFormat: "h:m",
                    altField: "#tarih-db",
                    monthNames: ["Ocak", "Şubat", "Mart", "Nisan", "Mayıs", "Haziran", "Temmuz", "Ağustos", "Eylül", "Ekim", "Kasım", "Aralık"],
                    dayNamesMin: ["Pa", "Pt", "Sl", "Ça", "Pe", "Cu", "Ct"],
                    firstDay: 1,
                    dateFormat: "yy-mm-dd",
                    showOn: "button",
                    showAnim: 'slideDown',
                    showButtonPanel: true,
                    autoSize: true,
                    buttonImage: "http://jqueryui.com/resources/demos/datepicker/images/calendar.gif",
                    buttonImageOnly: false,
                    buttonText: "Tarih Seçiniz",
                    closeText: "Temizle"
                });
                $(document).on("click", ".ui-datepicker-close", function () {
                    $('.datepicker').val("");
                    table.columns(5).search("").draw();
                });
            }
            // For DropDown inputs
            else if (index == 2) {
                $(this).replaceWith('<th><select id="filter_comparator" class="styled-select yellow rounded"><option value="select">Seç</option><option value="eq">=</option><option value="gt">&gt;=</option><option value="lt">&lt;=</option><option value="ne">!=</option></select><input type="text" id="filter_value"></th>');

                var selectedOperator;
                $('#filter_comparator').on('change', function () {
                    var i = $(this).attr('id');  // getting column index
                    var v = $(this).val();  // getting search input value
                    selectedOperator = v;
                    if(v=="select")
                        table.columns(index).search('select|0').draw();
                    $('#filter_value').val("");
                });

                $('#filter_value').on('keyup click change', function () {
                    var keycode = (event.keyCode ? event.keyCode : event.which);
                    if (keycode == '13') {
                        var i = $(this).attr('id');  // getting column index
                        var v = $(this).val();  // getting search input value
                        table.columns(index).search(selectedOperator + '|' + v).draw();
                    }
                });
            }
        })

    }

2018-12-17 13:09:38

jQuery获取select onChange的值

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