There is 4 button
<button type="button" class="addf" idu="1">Plus</button>
<button type="button" class="unf" idu="1">Min</button>
<button type="button" class="addf" idu="2">Plus</button>
<button type="button" class="unf" idu="2">Min</button>
How to delete element in the same attr with dynamic jquery? Example, if you click .addf button where attr idu="1", you will delete .unf button where attr idu="1". If you click .addf button where attr idu="2", you will delete .unf button where attr idu="2"