当我在引导模式中使用select2 (input)时，我不能输入任何东西。就像残疾?在modal之外select2工作正常。
工作示例:http://jsfiddle.net/byJy8/1/
代码:
<!-- Modal -->
<div id="myModal" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h3 id="myModalLabel">Panel</h3>
</div>
<div class="modal-body" style="max-height: 800px">
<form class="form-horizontal">
<!-- Text input-->
<div class="control-group">
<label class="control-label" for="vdn_number">Numer</label>
<div class="controls">
<!-- seleect2 -->
<input name="vdn_number" type="hidden" id="vdn_number" class="input-large" required="" />
</div>
</div>
</form>
</div>
<div class="modal-footer">
<button class="btn" data-dismiss="modal" aria-hidden="true">Close</button>
<button class="btn btn-primary">Save changes</button>
</div>
</div>
JS
$("#vdn_number").select2({
placeholder: "00000",
minimumInputLength: 2,
ajax: {
url: "getAjaxData/",
dataType: 'json',
type: "POST",
data: function (term, page) {
return {
q: term, // search term
col: 'vdn'
};
},
results: function (data) { // parse the results into the format expected by Select2.
// since we are using custom formatting functions we do not need to alter remote JSON data
return {results: data};
}
}
});
答案:
在这里你可以找到一个快速的解决方法
这里是“正确的方法”:Select2在嵌入引导模式时不起作用
为了更好地理解tabindex元素是如何工作的，完成公认的回答:
The tabindex global attribute is an integer indicating if the element can take input focus (is focusable), if it should participate to sequential keyboard navigation, and if so, at what position. It can take several values:
-a negative value means that the element should be focusable, but should not be reachable via sequential keyboard navigation;
-0 means that the element should be focusable and reachable via sequential keyboard navigation, but its relative order is defined by the platform convention;
-a positive value means should be focusable and reachable via sequential keyboard navigation; its relative order is defined by the value of the attribute: the sequential follow the increasing number of the tabindex. If several elements share the same tabindex, their relative order follows their relative position in the document.
来自:Mozilla开发人员网络
在Bootstrap模态中使用Select2 Bootstrap 5主题，如下所示:
修复了select2 & bootstrap模态搜索输入错误。
修复选择选项后的select2 & bootstrap模式滚动错误。
jQuery(function() {
$('.my-select2').each(function() {
$(this).select2({
theme: "bootstrap-5",
dropdownParent: $(this).parent(), // fix select2 search input focus bug
})
})
// fix select2 bootstrap modal scroll bug
$(document).on('select2:close', '.my-select2', function(e) {
var evt = "scroll.select2"
$(e.target).parents().off(evt)
$(window).off(evt)
})
})
<!DOCTYPE html>
<html>
<head>
<!-- Styles -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" />
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/css/select2.min.css" />
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/select2-bootstrap-5-theme@1.2.0/dist/select2-bootstrap-5-theme.min.css" />
<!-- Scripts -->
<script src="https://cdn.jsdelivr.net/npm/jquery@3.5.0/dist/jquery.slim.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/js/select2.min.js"></script>
</head>
<body>
<!-- Button trigger modal -->
<button type="button" class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#exampleModal">
Launch demo modal
</button>
<!-- Modal -->
<div class="modal fade" id="exampleModal" tabindex="-1" aria-labelledby="exampleModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="exampleModalLabel">Modal title</h5>
<button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
</div>
<div class="modal-body">
Select2 v4.1
<select class="my-select2">
<option>Test 1</option>
<option>Test 2</option>
<option>Test 3</option>
<option>Test 4</option>
<option>Test 5</option>
<option>Test 6</option>
<option>Test 7</option>
<option>Test 8</option>
<option>Test 9</option>
<option>Test 10</option>
</select>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
</div>
</body>
</html>
我在github上找到了select2的解决方案
https://github.com/ivaynberg/select2/issues/1436
对于bootstrap 3，解决方案是:
$.fn.modal.Constructor.prototype.enforceFocus = function() {};
Bootstrap 4重命名了enforceFocus方法为_enforceFocus，所以你需要修补它:
$.fn.modal.Constructor.prototype._enforceFocus = function() {};
从以上链接复制的解释:
Bootstrap向focusin事件注册了一个监听器，它检查被聚焦的元素是覆盖本身还是它的后代——如果不是，它只是重新聚焦在覆盖上。随着select2下拉框被附加到正文，这有效地防止你在文本框中输入任何东西。
您可以通过覆盖在模态上注册事件的enforceFocus函数来快速修复这个问题
