Question

I’d like jQuery to detect when the option with the id trade_buy_max is selected.

$(document).ready(function() {
    $("option#trade_buy_max").select(function () {
        //do something
    });
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
<select name='type' id='type'>
    <option id='trade_buy' value='1' selected='selected'>Buy</option>
    <option id='trade_buy_max' value='1'>Buy max</option>
    <option id='trade_sell' value='2'>Sell</option>
    <option id='trade_sell_max' value='2'>Sell max</option>
</select>

I’ve tried the following, but it doesn’t seem to work.

Any ideas?

Answer 1

This works…
Listen for the change event on the select box to fire and once it does then just pull the id attribute of the selected option.

$("#type").change(function(){
  var id = $(this).find("option:selected").attr("id");

  switch (id){
    case "trade_buy_max":
      // do something here
      break;
  }
});