我有一个jquery代码,这就是我的select2标签。运行良好:
$('select').select2({
placeholder: 'Select a month'
});
$("select").on("select2:select", function(evt) {
var element = evt.params.data.element;
var $element = $(element);
window.setTimeout(function() {
if ($("select").find(":selected").length > 1) {
var $second = $("select").find(":selected").eq(-2);
$element.detach();
$second.after($element);
} else {
$element.detach();
$("select").prepend($element);
}
$("select").trigger("change");
}, 1);
});
$("select").on("select2:unselect", function(evt) {
if ($("select").find(":selected").length) {
var element = evt.params.data.element;
var $element = $(element);
$
("select").find(":selected").after($element);
}
});
<link href="https://rawgit.com/select2/select2/master/dist/css/select2.min.css" rel="stylesheet" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://rawgit.com/select2/select2/master/dist/js/select2.full.js"></script>
<select multiple="multiple" style="width: 300px">
<option value="JAN">January</option>
<option value="FEB">February</option>
<option value="MAR">March</option>
<option value="APR">April</option>
<option value="MAY">May</option>
<option value="JUN">June</option>
<option value="JUL">July</option>
<option value="AUG">August</option>
<option value="SEP">September</option>
<option value="OCT">October</option>
<option value="NOV">November</option>
<option value="DEC">December</option>
</select>
但是我有问题,当我使用多个选择框时,我的代码不再正常工作:
$('select').select2({
placeholder: 'Select a month'
});
$("select").on("select2:select", function(evt) {
var element = evt.params.data.element;
var $element = $(element);
window.setTimeout(function() {
if ($("select").find(":selected").length > 1) {
var $second = $("select").find(":selected").eq(-2);
$element.detach();
$second.after($element);
} else {
$element.detach();
$("select").prepend($element);
}
$("select").trigger("change");
}, 1);
});
$("select").on("select2:unselect", function(evt) {
if ($("select").find(":selected").length) {
var element = evt.params.data.element;
var $element = $(element);
$
("select").find(":selected").after($element);
}
});
<link href="https://rawgit.com/select2/select2/master/dist/css/select2.min.css" rel="stylesheet" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://rawgit.com/select2/select2/master/dist/js/select2.full.js"></script>
<select multiple="multiple" style="width: 300px">
<option value="JAN">January</option>
<option value="FEB">February</option>
<option value="MAR">March</option>
<option value="APR">April</option>
<option value="MAY">May</option>
<option value="JUN">June</option>
<option value="JUL">July</option>
<option value="AUG">August</option>
<option value="SEP">September</option>
<option value="OCT">October</option>
<option value="NOV">November</option>
<option value="DEC">December</option>
</select>
<select multiple="multiple" style="width: 300px">
<option value="JAN">January</option>
<option value="FEB">February</option>
<option value="MAR">March</option>
<option value="APR">April</option>
<option value="MAY">May</option>
<option value="JUN">June</option>
<option value="JUL">July</option>
<option value="AUG">August</option>
<option value="SEP">September</option>
<option value="OCT">October</option>
<option value="NOV">November</option>
<option value="DEC">December</option>
</select>
<select multiple="multiple" style="width: 300px">
<option value="JAN">January</option>
<option value="FEB">February</option>
<option value="MAR">March</option>
<option value="APR">April</option>
<option value="MAY">May</option>
<option value="JUN">June</option>
<option value="JUL">July</option>
<option value="AUG">August</option>
<option value="SEP">September</option>
<option value="OCT">October</option>
<option value="NOV">November</option>
<option value="DEC">December</option>
</select>
这意味着它仅适用于最后一个选择框。
最佳答案
问题是您使用的是$("select")
,它返回所有select
标记,而不是您想要的。您希望在每个select
处理程序上,该处理程序将仅针对触发此事件的select
运行。
看看我是如何解决的。
$('select').select2({
placeholder: 'Select a month'
});
$("select").on("select2:select", function(evt) {
var $select = $(this);
var element = evt.params.data.element;
var $element = $(element);
window.setTimeout(function() {
if ($select.find(":selected").length > 1) {
var $second = $select.find(":selected").eq(-2);
$select.detach();
$second.after($element);
} else {
$select.detach();
$element.prepend($element);
}
$select.trigger("change");
}, 1);
});
$("select").on("select2:unselect", function(evt) {
if ($("select").find(":selected").length) {
var $select = $(this);
var element = evt.params.data.element;
var $element = $(element);
$select.find(":selected").after($element);
}
});
<link href="https://rawgit.com/select2/select2/master/dist/css/select2.min.css" rel="stylesheet" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://rawgit.com/select2/select2/master/dist/js/select2.full.js"></script>
<select multiple="multiple" style="width: 300px">
<option value="JAN">January</option>
<option value="FEB">February</option>
<option value="MAR">March</option>
<option value="APR">April</option>
<option value="MAY">May</option>
<option value="JUN">June</option>
<option value="JUL">July</option>
<option value="AUG">August</option>
<option value="SEP">September</option>
<option value="OCT">October</option>
<option value="NOV">November</option>
<option value="DEC">December</option>
</select>
<select multiple="multiple" style="width: 300px">
<option value="JAN" selected>January</option>
<option value="FEB">February</option>
<option value="MAR">March</option>
<option value="APR">April</option>
<option value="MAY">May</option>
<option value="JUN">June</option>
<option value="JUL">July</option>
<option value="AUG">August</option>
<option value="SEP">September</option>
<option value="OCT">October</option>
<option value="NOV">November</option>
<option value="DEC">December</option>
</select>
<select multiple="multiple" style="width: 300px">
<option value="JAN" selected>January</option>
<option value="FEB" selected>February</option>
<option value="MAR">March</option>
<option value="APR">April</option>
<option value="MAY">May</option>
<option value="JUN">June</option>
<option value="JUL">July</option>
<option value="AUG">August</option>
<option value="SEP">September</option>
<option value="OCT">October</option>
<option value="NOV">November</option>
<option value="DEC">December</option>
</select>
关于jquery - 如何使用多个修改的select2选择框?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/48689242/