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这就像 this topic 的第二部分现在我需要能够从一个选择到另一个选择读取动态 data-*
属性。这意味着什么?
首先看一下下面的图片:
您所看到的是以下代码的作用:
// This turn 1st and 3rd into select2
$('#module, #conditions').select2();
// This turn 2nd into select2 using data from a datasource
$('select#fields').select2({
placeholder: 'Select a field',
data: data.fields
});
正如我在引用的主题中发布的那样,data.fields
具有如下所示的 JSON:
"fields": [
{
"id": "companies_id",
"text": "companies_id",
"data-type": "int"
},
{
"id": "parent_companies_id",
"text": "parent_companies_id",
"data-type": "int"
},
{
"id": "client_of_companies_id",
"text": "client_of_companies_id",
"data-type": "int"
},
{
"id": "asset_locations_id",
"text": "asset_locations_id",
"data-type": "int"
},
{
"id": "companies_name",
"text": "companies_name",
"data-type": "varchar"
},
{
"id": "companies_number",
"text": "companies_number",
"data-type": "varchar"
}
]
在这种情况下,我需要从第三个选择(条件)的 onChange()
事件中读取分配给第二个选择(字段)的 data-*
属性然后对 INPUT 进行一些修改(但这由我负责)。
如何从任何其他 select2 元素获取 data-*
值?
最佳答案
问题更多的是“如何获取 select2 中选定选项的 data-*
值?”。
检查这个例子:
var $example = $("#s1").select2({
data: [
{
"id": "companies_id",
"text": "companies_id",
"data-type": "int",
"data-extra": '1'
},
{
"id": "parent_companies_id",
"text": "parent_companies_id",
"data-type": "int",
"data-extra": '2'
},
{
"id": "client_of_companies_id",
"text": "client_of_companies_id",
"data-type": "int",
"data-extra": '3'
},
{
"id": "asset_locations_id",
"text": "asset_locations_id",
"data-type": "int",
"data-extra": '4'
},
{
"id": "companies_name",
"text": "companies_name",
"data-type": "varchar",
"data-extra": '5'
},
{
"id": "companies_number",
"text": "companies_number",
"data-type": "varchar",
"data-extra": '6'
}
],
}).on('select2:select', function(e) {
console.log(e.params.data['data-type'], e.params.data['data-extra']);
});
$('button').click(function() {
option_el = $('#s1 :selected');
data = option_el.data('data')
console.log(data['data-type'])
console.log(data['data-extra'])
});
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/css/select2.min.css" />
<script type="text/javascript" src="https://code.jquery.com/jquery-3.1.0.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/js/select2.js"></script>
<select id="s1">
</select>
<br />
<br />
<button>Click to the the `data-type` value</button>
关于javascript - 如何获取 select2 中所选选项的 data-* 值?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/40383852/
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