javascript Jquery通过'data-id'选择元素
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Jquery selecting element by 'data-id'
提问by LogixMaster
Similar to the question here, I need to get an element based on its data-id.
The problem I encounter is that I want to retrieve a an a element with a certain data-idusing a variable.
类似于这里的问题，我需要根据它的data-id. 我遇到的问题是我想data-id使用变量检索具有某个元素的 a 元素。
lets consider the code below:
让我们考虑下面的代码：
var item_id = 12345;
if I want to get the element that has the data-idwith the value of item_id, would I do the following ?
如果我想获取具有data-iditem_id 值的元素，我会执行以下操作吗？
$('[data-id=item_id]')
This does not work, and I am kind of stuck on how I can get around this.
这是行不通的，我对如何解决这个问题有点困惑。
回答by Felix
You can concatenate the variable using +:
您可以使用+以下方法连接变量：
$('[data-id=' + item_id + ']')
