我在JSFIDDLE中提供了一个选择2。如何选择一个选项调用All
它将选择该选项字段中除自身之外的所有选项,这意味着All
选项更像是全选按钮。并取消选择All
。将取消选择所有选项。我从下面的jsfiddle提供相同的代码:
HTML:
<select class="parent_filter_select2 pull-right" id="parent_filter_select2" multiple="multiple" name="select_project" style="width: 300px;">
<option value="all">All</option>
<option value="Option A">Option A</option>
<option value="Option B">Option B</option>
<option value="Option C">Option C</option>
<option value="Option D">Option D</option>
</select>
Javascript:
$('#parent_filter_select2').select2({
placeholder: 'Select'
});
非常感谢任何帮助,谢谢。
更新:我发现类似于我想要的东西,但它使用了复选框,所以我想知道如何在All
选项而不是复选框上实现它,还有这个它也选择All
选项,代码如下:
$("#checkbox").click(function(){
if($("#checkbox").is(':checked') ){ //select all
$("#parent_filter_select2").find('option').prop("selected",true);
$("#parent_filter_select2").trigger('change');
} else { //deselect all
$("#parent_filter_select2").find('option').prop("selected",false);
$("#parent_filter_select2").trigger('change');
}
});
答案 0 :(得分:4)
Select2 github repo上有一个未解决的问题,请参阅:select all / select none header
根据&#39; bkdotcom&#39;用户(请参阅comment)您可以定义selectAllAdapter
并将其与Select2(版本4)一起使用。
检查您的小提琴已更新:https://jsfiddle.net/beaver71/tjvjytp3/
或此片段:
/*
Define the adapter so that it's reusable
*/
$.fn.select2.amd.define('select2/selectAllAdapter', [
'select2/utils',
'select2/dropdown',
'select2/dropdown/attachBody'
], function (Utils, Dropdown, AttachBody) {
function SelectAll() { }
SelectAll.prototype.render = function (decorated) {
var self = this,
$rendered = decorated.call(this),
$selectAll = $(
'<button class="btn btn-xs btn-default" type="button" style="margin-left:6px;"><i class="fa fa-check-square-o"></i> Select All</button>'
),
$unselectAll = $(
'<button class="btn btn-xs btn-default" type="button" style="margin-left:6px;"><i class="fa fa-square-o"></i> Unselect All</button>'
),
$btnContainer = $('<div style="margin-top:3px;">').append($selectAll).append($unselectAll);
if (!this.$element.prop("multiple")) {
// this isn't a multi-select -> don't add the buttons!
return $rendered;
}
$rendered.find('.select2-dropdown').prepend($btnContainer);
$selectAll.on('click', function (e) {
var $results = $rendered.find('.select2-results__option[aria-selected=false]');
$results.each(function () {
self.trigger('select', {
data: $(this).data('data')
});
});
self.trigger('close');
});
$unselectAll.on('click', function (e) {
var $results = $rendered.find('.select2-results__option[aria-selected=true]');
$results.each(function () {
self.trigger('unselect', {
data: $(this).data('data')
});
});
self.trigger('close');
});
return $rendered;
};
return Utils.Decorate(
Utils.Decorate(
Dropdown,
AttachBody
),
SelectAll
);
});
$('#parent_filter_select2').select2({
placeholder: 'Select',
dropdownAdapter: $.fn.select2.amd.require('select2/selectAllAdapter')
});
&#13;
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.5/css/select2.min.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.5/js/select2.full.min.js"></script>
<select class="parent_filter_select2 pull-right" id="parent_filter_select2" multiple="multiple" name="select_project" style="width: 300px;">
<option value="Option A">Option A</option>
<option value="Option B">Option B</option>
<option value="Option C">Option C</option>
<option value="Option D">Option D</option>
</select>
&#13;
答案 1 :(得分:2)
您可以使用
手动选择选项$('#parent_filter_select2').select2('val', values);
从您的下拉菜单中选择选项All
。
您可以将values
作为javascript数组。
var values = new Array();
$('#parent_filter_select2').find('option').each(function () {
var opt= $(this);
var opvalue= opt.attr('value');
if(opvalue != "all")
values.push(opvalue);
});
示例代码在这里。
$('body').on('change', '#parent_filter_select2', function () {
var val = $(this).val();
//alert(val);
if(val.indexOf('all') != -1){
$('#parent_filter_select2').select2('val', values);
}
else{
$('#parent_filter_select2').select2('val', val);
}
});
你可以查看jsfiddle demo here
看看它有帮助..
答案 2 :(得分:1)
使用以下脚本
$("#parent_filter_select2 option").click(function () {
var val = $(this).attr("value");
if(val == 'all'){
$('#parent_filter_select2 option').prop('selected', true);
$('#parent_filter_select2 option[value="all"]').prop('selected', false);
}
});
&#13;
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select class="parent_filter_select2 pull-right" id="parent_filter_select2" multiple="multiple" name="select_project" style="width: 300px;">
<option value="all">All</option>
<option value="Option A">Option A</option>
<option value="Option B">Option B</option>
<option value="Option C">Option C</option>
<option value="Option D">Option D</option>
</select>
&#13;