[英]maximumSelectionSize isn't working in Select2
I have a multivalue select, and I want to set the restriction on number of selected items using the select2
library. 我有一个多值选择,我想使用select2
库设置所选项目数量的限制。
Documentation says that I should set maximumSelectionSize
during the object initialization. 文档说我应该在对象初始化期间设置maximumSelectionSize
。 Unfortunately, the following code doesn't work: 不幸的是,以下代码不起作用:
$(document).ready(function () {
$("#select_demo").select2({
maximumSelectionSize: 3
});
});
My html selectbox: 我的html选择框:
<div class="form-group">
<select id="select_demo" multiple="multiple" class="form-control select2 select2-container-multi">
<optgroup label="One">
<option>one</option>
<option>two</option>
<option>three</option>
<option>four</option>
</optgroup>
<optgroup label="Two">
<option>one2</option>
<option>two2</option>
</optgroup>
<optgroup label="Three">
<option>one3</option>
<option>two3</option>
<option>three3</option>
<option>four3</option>
</optgroup>
</select>
</div>
http://jsfiddle.net/x4oqL1jr/2/ http://jsfiddle.net/x4oqL1jr/2/
What is wrong with this chunk of code? 这段代码有什么问题?
Since the version 4.0 of select2
they have replaced maximumSelectionSize
with maximumSelectionLength
. 由于4.0版本 select2
,他们已经取代maximumSelectionSize
与maximumSelectionLength
。
So, just change the js code in the following way: 所以,只需按以下方式更改js代码:
$(document).ready(function () {
$("#select_demo").select2({
maximumSelectionLength: 3
});
});
You can find the latest documentation following this link: https://select2.github.io/examples.html#multiple-max 您可以在以下链接中找到最新文档: https : //select2.github.io/examples.html#multiple-max
Everything works like a charm: 一切都像魅力一样:
http://jsfiddle.net/4tk4hymn/1/ http://jsfiddle.net/4tk4hymn/1/
UPDATE: You can also add a data-maximum-selection-length="3"
attribute as pointed out in the comments. 更新:您还可以添加data-maximum-selection-length="3"
属性,如注释中所指出的那样。 For example, see http://jsfiddle.net/1b8y9uzh/ . 例如,请参阅http://jsfiddle.net/1b8y9uzh/ 。
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